Quartz sentence example

quartz
  • The rocks are probably of quartz, i.e.
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  • Gold is obtained chiefly from quartz reefs, but there are still some important alluvial deposits being worked.
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  • Chalcedony may be regarded as a micro-crystalline form of quartz.
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  • I am going to attempt this, for the first time ever, with a 500 watt quartz halogen bulb!
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  • When looking for a watch for a nurse, fashionable quartz watches could be just the thing.
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  • There are gold-bearing quartz reefs at Madibi, near Mafeking, where mining began in 1906.
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  • Gold occurs in quartz veins traversing various formations (some as young as Jurassic), and also in gravels, which were for the most part deposited previous to the uplift of the Sierra block.
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  • This mature weathering, resulting in the relatively complete separation of the quartz from the kaolin, and both from the calcium carbonate and other basic materials, implies conditions of rock decay comparable to those of the present time.
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  • Other minerals whose production may be found stated in detail in the annual volume on Mineral Resources of the United States Geological Survey are: natural pigments, felspar, white mica, graphite, fluorspar, arsenic, quartz, barytes, bromine.
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  • The gangue was quartz, very irregularly distributed in bodies often of great sizes, for the most part nearly or quite barren of ore.
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  • A series of quartzites and slates referred to the Cambrian, and holding numerous and important veins of auriferous quartz, characterize its Atlantic or southeastern side, while valuable coal-fields occur in Cape Breton and on parts of its shores on the Gulf of St Lawrence.
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  • We are enabled by means of it to extend materially the range of our observation, especially if the ordinary kinds of glass, which strongly absorb ultraviolet light, are avoided, and, when necessary, replaced by quartz.
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  • At that point, however, quartz and even atmospheric air become strongly absorbent and the expensive fluorspar becomes the only medium that can be used.
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  • The prism may be made of a dense flint glass or of quartz if the ultra-violet is to be explored, or it may be hollow and filled with carbon bisulphide, a-bromnaphthalene or other suitable liquid.
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  • After three days he worked with common electricity, trying glass, heavy optical glass, quartz, Iceland spar, all without effect, as on former trials.
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  • By the operation of meteoric agencies, iron pyrites readily pass into limonite often with retention of external form; and the masses of "gozzan" or "gossan" on the outcrop of certain mineral-veins consist of rusty iron ore formed in this way, and associated with cellular quartz.
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  • It is the commercial centre of the north-western grain and wool-producing district and is also noted for its quartz and alluvial gold-mines.
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  • It is common in mineral-veins, usually associated with quartz, and is often known to miners as "mundic."
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  • Just as a granite is a conglomerate or mechanical mixture of distinct crystalline grains of three perfectly definite minerals, mica, quartz, and felspar, so iron and steel in their usual slowly cooled state consist of a mixture of microscopic particles of such definite quasiminerals, diametrically unlike.
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  • To put the iron contained in iron ore into a state in which it can be used as a metal requires essentially, first its deoxidation, and second its separation from the other mineral matter, such as clay, quartz, &c., with which it is found associated.
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  • The mountains consist here of an ancient laminated micaceous quartzite, which is in parts a flexible sandstone known as itacolumite, and in parts a conglomerate; it is interbedded with clay-slate, mica-schist, hornblende-schist and haematite-schist, and intersected by veins of quartz.
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  • Under all these three conditions the diamond is associated with fragments of the rocks of the country and the minerals derived from them, 'especially quartz, hornstone, jasper, the polymorphous oxide of titanium (rutile, anatase and brookite), oxides and hydrates of iron (magnetite, ilmenite, haematite, limonite), oxide of tin, iron pyrites, tourmaline, garnet, xenotime, monazite, kyanite, diaspore, sphene, topaz, and several phosphates, and also gold.
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  • African locality must be mentioned.; considerable finds were reported in 1905 and 1906 from gravels at Somabula near Gwelo in Rhodesia where the diamond is associated with chrysoberyl, corundum (both sapphire and ruby), topaz, garnet, ilmenite, staurolite, rutile, with pebbles of quartz, granite, vIII.
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  • Among the commonest associates of the diamond are quartz, topaz, tourmaline, rutile, zircon, magnetite, garnet, spinel and other minerals which are common accessory constituents of granite, gneiss and the crystalline schists.
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  • At Sao Joao da Chapada, in Minas Geraes, diamonds occur in a clay interstratified with the itacolumite, and are accompanied by sharp crystals of rutile and haematite in the neighbourhood of decomposed quartz veins which intersect the itacolumite.
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  • It has been suggested that these three minerals were originally formed in the quartz veins.
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  • A typical German find is at Taubach, near Weimar, where almond-shaped stone wedges, small flint knives, and roughly-hacked pieces of porphyry and quartz are found, together with the remains of elephants.
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  • By modern mineralogists the name chalcedony is restricted to those kinds of silica which occur not in distinct crystals like ordinary quartz, but in concretionary, mammillated or stalactitic forms, which break with a fine splintery fracture, and display a delicate fibrous structure.
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  • It is rather softer and less dense than crystallized quartz, its hardness being about 6.5 and its specific gravity 2.6, the difference being probably due to the presence of a small amount of opaline silica between the fibres.
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  • Certain flat oval nodules from a decomposed lava (augite-andesite) in Uruguay present a cavity lined with quartz crystals and enclosing liquid (a weak saline solution), with a movable air-bubble, whence they are called "enhydros" or water-stones.
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  • Their geological formation is metamorphic gneiss, veined with felspar and quartz, and interspersed with reddish porphyrite.
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  • A simple form, which is sometimes referred to as a conical pen dulum, may be con structed with a large sewing needle carrying a galvanometer mirror, suspended by means of a silk or quartz fibre as shown in fig.
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  • The soil of the Delta is a dark grey fine sandy soil, becoming at times almost a stiff clay by reason of the fineness of its particles, which consist almost wholly of extremely small grains of quartz with a few other minerals, and often numerous flakes of mica.
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  • This deposit varies in thickness, as a rule, from 55 to 70 ft., at which depth it is underlain by a series of coarse and fine yellow quartz sands, with occasional pebbles, or even banks of gravel, while here and there thin beds of clay occur.
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  • They occur as lines of dunes formed of rounded grains of quartz, and lie in the direction of the prevalent wind, usually being of small breadth as compared with their length; but in certain areas, such as that lying S.W.
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  • The materials are quartz crystal, basalt, porphyry, syenite, granite, volcanic ash, various metamorphics, serpentine, slate, dolomite marble, alabaster, many colored marbles, saccharine marble, grey and white limestones.
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  • Glaze and Glass.From almost the beginning of the prehistoric age there are glazed pottery beads found in the graves: and glazing on amulets of quartz or other stones begins in the middle of the prehistoric. Apparently then glazing went together with the working of the copper ores, and probably accidental slags in the smelting gave the first idea of using glaze intentionally.
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  • The silica was needed quite pure from iron, in order to get the rich blues, and was obtained from calcined quartz pebbles; ordinary sand will only make a green frit.
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  • Feldspar, quartz and granite are quarried in the environs.
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  • Its essential constituents are felspar, quartz and riebeckite - a soda amphibole.
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  • Gold is found both in alluvial and quartz formations, the quartz being especially rich.
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  • Auriferous quartz is worked by a foreign company in its neighbourhood.
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  • The township is the centre of the granite industry of the state; the quarries are near the villages of Westerly and Niantic. The granite is of three kinds: white statuary granite, a quartz monzonite, with a fine even-grained texture, used extensively for monuments; blue granite, also a quartz monzonite and also much used for monuments; and red granite, a biotite granite, reddish grey in colour and rather coarse in texture, used for buildings.'
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  • Quartz mining began as early as 1851.
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  • Quartz veins are very often as good at a depth of 3000 ft.
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  • This is the region of quartz mining.
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  • Chrysoprase, mined near Porterville and near Visalia (Tulare county), is used partly for gems, but more largely (like the vesuvianite found near Exeter, in the same county) for mosaic work; and there are ledges of fine rose quartz in the Coahuila mountains of Riverside county and near Lemon Cove, Tulare county.
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  • Gold was discovered on the Sweetwater river in 1867, and placer and quartz deposits have been found in almost every county in the state.
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  • The variation of the horizontal force is obtained by the motion of a magnet which is carried either by a bifilar suspension or by a fairly stiff metal wire or quartz fibre.
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  • In the Eschenhagen pattern instrument, in which a single quartz fibre is used for the suspension, two magnets are placed in the vicinity of the suspended magnet and are so arranged that their field partly neutralizes the earth's field; thus the torsion required to hold the magnet with its axis perpendicular to the earth's field is reduced, and the arrangement permits of the sensitiveness being altered by changing the position of the deflecting magnets.
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  • Igneous rocks are not extensively developed; in Wales they form an important feature and occur in considerable thickness; they are represented by lavas of olivine-diabase and by contemporaneous tuffs which are traversed by later granite and quartz felsite.
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  • Minerals produced in small quantities include gypsum, millstones, salt and sandstone, and among those found but not produced (in 1902) in commercial quantities may be mentioned allanite, alum, arsenic, bismuth, carbonite, felspar, kaolin, marble, plumbago, quartz, serpentine and tin.
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  • It generally consists of limestone, or of mixed limestone and clay, or of sand and clay, or of gravel, with here and there flint and rolled quartz.
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  • The subsoils of some of the other districts (Cotes and St Emilion) contain much stone in the shape of flint and quartz.
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  • The finest wines of the Medoc and Graves are largely grown on a mixture of gravel, quartz and sand with a subsoil of alios or clay.
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  • The soil varies considerably in nature, but consists mostly of gravel, quartz, limestone and sand on the surface, and of clay and alios beneath.
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  • In the north of Bundelkhand the prevailing rock is gneiss and quartz.
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  • The quartz takes the shape of long serrated ridges, which are in many places a characteristic feature of the landscape.
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  • This conversion is effected by allowing the ferrous chloride liquors slowly to descend a tower, filled with pieces of wood, coke or quartz, where it meets an ascending current of chlorine.
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  • The needle, a piece of paddle-shaped paper thinly coated with silver foil, is suspended by a quartz fibre, its extreme lightness making it possible to use a very feeble controlling force without rendering the period of oscillation unduly great.
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  • To facilitate the communication of the charge to the needle, the quartz fibre and its attachments are rendered conductive by a thin film of solution of hygroscopic salt such as calcium chloride.
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  • The upper end of the quartz fibre is rotated by a torsion head, and a metal cover serves to screen the instrument from stray electrostatic fields.
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  • By using a quartz fibre of about half the above diameter the sensitiveness was much increased.
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  • Of these the chief are Poole's Hole, a vast stalactite cave, about half a mile distant; Diamond Hill, which owes its name to the quartz crystals which are not uncommon in its rocks; and Chee Tor, a remarkable cliff, on the banks of the Wye, 300 ft.
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  • The rock is a very compact and fine-grained mixture of felspar, quartz and mica, often graduating to mica schist, quartzite and gneiss.
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  • There are, moreover, some rich gold quartz reefs in the neighbourhood.
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  • To him is also due the discovery of the power of rotatory polarization exhibited by quartz, and last of all, among his many contributions to the support of the undulatory hypothesis, comes the experimentum crucis which he proposed to carry out for comparing directly the velocity of light in air and in water or glass.
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  • Lead, wolfram, antimony and auriferous quartz exist in the districts of Coimbra, Evora, Beja and Faro.
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  • The upper slit was covered with glass, the lower with quartz.
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  • The lower area of bactericidal action extends much farther to the right, because the quartz allows more ultra-violet rays to pass than does glass.
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  • The hard ore is siliceous, and fine crystallized specimens occur in association with smoky quartz.
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  • The dazzling white effect of their peaks is produced, not by snow, as among the Himalayas, but by enormous masses of vitreous rose-coloured quartz.
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  • Many of them are mere heaps of sand and stone; others consist of huge masses of quartz.
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  • Numerous quartz reefs occur both in the Silurian and Ordovician rocks.
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  • The yield of gold from quartz mines was in 1904 II dwt.
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  • In the Wallega district are veins of gold-bearing quartz, mined to a certain extent.
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  • Quartz is a mineral which is put to many uses.
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  • Fused quartz has recently been used for the construction of lenses and laboratory vessels, or it may be drawn out into the finest elastic fibres and used for suspending mirrors, &c., in physical apparatus.
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  • Buhrstone, a cellular variety of chalcedonic quartz from the Tertiary strata of the Paris basin, is largely used for millstones.
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  • Quartz is a valuable grinding and polishing material, and is used for making sandpaper and scouring-soap. It is also largely used in the manufacture of glass and porcelain, "silver sand" being a pure quartz sand.
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  • Quartz crystallizes in the trapezohedral-hemihedral class of the rhombohedral division of the hexagonal system.
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  • Numerous other faces have been observed on crystals of quartz, but they are of rare occurrence.
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  • The basal plane, so common on calcite and many other rhombohedral minerals, is of the greatest rarity in quartz, and when present only appears as a small rough face formed by the corrosion of the crystal.
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  • Twinned crystals of quartz are extremely common, but are complex in character and can only be deciphered when the faces s and x are present, which is not often the case.
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  • The pyro-electric characters of quartz are closely connected with its peculiar type of symmetry and especially with the three uniterminal dyad axes.
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  • A similar distribution of electric charges is produced when a crystal is subjected to pressure; quartz being thus also piezo-electric. Etched figures, both natural and artificial (in the latter case produced by the action of hydrofluoric acid), on the faces of the crystals are in accordance with the symmetry, and may serve to distinguish leftand righthanded crystals.
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  • In its optical characters, quartz is also of interest, since it is one of the two minerals (cinnabar being the other) which are circularly polarizing.
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  • A ray of plane-polarized light traversing a right-handed crystal of quartz in the direction of the triad axis has its plane of polarization rotated to the right, while a left-handed crystal rotates it to the left.
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  • Superimposed sections of rightand left-handed quartz, as may sometimes be present in sections of twinned crystals, exhibit Airy's spirals in the polariscope.
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  • The indices of refraction of quartz for yellow (D) light are co = I.5442 and e = I.
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  • Many peculiarities of the growth of crystals are well illustrated by the mineral quartz.
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  • Thus in "ghost quartz," in which one crystal is seen inside another, the stages of growth are marked out by thin layers of enclosed material.
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  • In "capped quartz" these layers are thicker, and the successive shells of the crystal may be easily separated.
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  • Enclosures of other minerals (rutile, chlorite, haematite, gothite, actinolite, asbestos and many others) are extremely frequent in crystals of quartz.
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  • The characters as given above apply more particularly to crystals of quartz, but in the various massive and compact varieties the material may be quite different in general appearance.
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  • Further, these varieties may be of almost any colour, whereas transparent crystals have only a limited range of colour, being either colourless (rock-crystal), violet (amethyst), brown (smoky quartz) or yellow (citrine).
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  • Quartz occurs as a primary and essential constituent of igneous rocks of acidic composition such as granite, quartz-porphyry and rhyolite, being embedded in these either as irregularly shaped masses or as porphyritic crystals.
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  • It is also a common constituent, as irregular grains, in many gneisses and crystalline schists, a quartz-schist being composed largely of quartz.
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  • Extensive veins of quartz are especially frequent in schistose rocks.
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  • In mineral veins and lodes crystallized quartz is usually the most abundant gangue mineral; the crystals are often arranged perpendicular to the walls of the lode, giving rise to a "comby" structure.
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  • Quartz being a mineral very resistant to weathering agencies, it forms the bulk of sands and sandstones; and when the sand grains are cemented together by a later deposit of secondary quartz a rock known as quartzite results.
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  • As a deposit from hot springs, quartz is much less common than opal.
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  • Crystals of quartz may be readily prepared artificially by a number of methods; for example, by heating glass or gelatinous silica with water under pressure.
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  • Geological research shows that the land surrounding the lake consists of gneiss, quartz and schistose rocks, covered, in the higher regions, with marl and red clay, and in the valleys with a rich black loam.
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  • The diamonds of this district are noted for their purity and lustre, and are generally associated with other crystals - garnets, agates, quartz and chalcedonies.
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  • Its specific gravity is 2.6 or only a little less than that of crystalline quartz.
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  • Microscopic sections show that flint is very finely crystalline and consists of quartz or chalcedonic silica; colloidal or amorphous silica may also be present but cannot form any considerable part of the rock.
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  • The soil is quartz sand and is chiefly covered with heather and brushwood.
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  • The gneiss is mostly grey, but occasionally pinkish, its essential constituents (felspar and quartz) being almost always associated with dark mica (biotite) and hornblende in variable quantity.
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  • The following precious stones are reported: corundum (rubies and sapphires), beryl, topaz, zircon, garnet, amazon-stone, tourmaline, often in large crystals, and variously coloured quartz, also often found in crystals of great size.
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  • When, however, a plate of quartz is used in this experiment, the light is coloured and is in no case cut off by the analyser, the tint, however, changing as the analyser is rotated.
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  • Biot further ascertained that this rotation of the plane of polarization varies as the distance traversed in the plate and very nearly as the inverse square of the wave-length, and found that with certain specimens of quartz the rotation is in a clockwise or right-handed direction to an observer receiving the light, while in others it is in the opposite direction, and that equal plates of the rightand lefthand varieties neutralize one another's effects.
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  • Since the two circular streams have different speeds, Fresnel argued that it would be possible to separate them by oblique refraction, and though the divergence is small, since the difference of their refractive indices in the case of quartz is only about o 00007, he succeeded by a suitable arrangement of alternately rightand left-handed prisms of quartz in resolving a plane-polarized stream into two distinct circularly polarized streams. A similar arrangement was used by Ernst v.
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  • If in the interference experiment with Fresnel's mirrors or biprism the slit be illuminated with white light that has passed through a polarizer and a quartz plate cut perpendicularly to the optic axis, it is found on analysing the light that in addition to the ordinary central set of coloured fringes two lateral systems are seen, one on either side of it.
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  • According to Fresnel's explanation the light in each of the interfering streams consists of two trains of waves that are circularly polarized in opposite direction and have a relative retardation of phase, introduced by the passage through the quartz: the central fringes are then due to the similarly polarized waves; the lateral systems are produced by the oppositely polarized streams, these on analysation being capable of interfering.
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  • Righi has, however, pointed out that this experiment may be explained by the fact that the function of the quartz plate and analyser is to eliminate the constituents of the composite stream of white light that mask the interference actually occurring at the positions of the lateral systems of fringes, and that any other method of removing them is equally effective.
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  • In fact, the lateral systems are obtained when a plate of selenite is substituted for the quartz.
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  • On these principles Airy, by an elaborate mathematical investigation, successfully explained the interference patterns obtained with plates of quartz perpendicular to the optic axis.
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  • This is a plate made of two equal wedges of quartz, that can be moved over one another so as to vary its thickness, and are cut so that the faces of the plate are parallel to the optic axis, which in the first wedge is perpendicular and in the second is parallel to the refracting edge.
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  • Soda light, first sifted by passage through a plate of potassium bichromate, traverses in succession a lens, a Nicol's prism, and a glass plate half covered with a half-wave plate of quartz, that is cut parallel to the optic axis and has its principal section inclined at a small angle to that of the prism.
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  • The telescope must be focussed on the edge of the quartz plate, and in order that all points of the field may be illuminated by the same part of the source, the flame must be so placed that its image is thrown by the lens on the diaphragm of the object glass of the telescope.
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  • The former consists of two semicircular plates of quartz, perpendicular to the optic axis and of opposite rotations, placed so as to have a common diameter and having such a thickness that each rotates the plane of polarization of mean yellow light through the same multiple of 90°.
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  • This is made of two plates of quartz, cut normally to the optic axis and of opposite rotations, placed the one in front of the other: the thickness of the one plate is fixed, while that of the other can be varied, as it is formed of two equal prisms that can be moved over one another along their common face.
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  • When the plates are of equal thickness, their combined effect is nil, but by adjusting the second, a rotation in the one or the other direction may be introduced, a scale attached to one prism and a vernier to the other giving the thickness of the resultant quartz plate.
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  • In order to correct this, the light after analysation is passed through another plate of quartz and then the sensitive tint may be more or less restored by cutting off some colour, the same for the whole field, by a Nicol's prism placed in the eyepiece of the telescope.
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  • Soleil's saccharimeter, as its name implies, is designed for the study of solutions of sugar, and it is clear that it will only work satisfactorily with active media that have nearly the same rotary dispersion as quartz.
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  • Since glass does not transmit the ultra-violet light, quartz is used, but such lenses can only be spherically corrected and not chromatically.
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  • These mountains consist of detached remnants of a sheet of quartz conglomerates, interbedded with sandstones, containing crinoid stems and obscure brachiopods.
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  • The Jurassic and Cretaceous formations, which in the Southern Cordillera are situated outside of the range to the east, form to a considerable extent the mass of the great range, together with quartz porphyry, the Tertiary, granite and other eruptive rocks, which have been observed along all the chain in South America up to Alaska in the north.
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  • If any rock be taken (even a piece of pure quartz) and crushed to a very fine powder, it will show some of the peculiarities of clays; for example, it will be plastic, retentive of moisture, impermeable to water, and will shrink to some extent if the moist mass be kneaded, and then allowed to dry.
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  • Quartz, for example, has little or no cleavage, and is not attacked by the atmosphere.
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  • They are principally finely divided quartz, epidote, zoisite, rutile, limonite, calcite, pyrites,.
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  • These sediments are fine and tenacious; their principal components, in addition to clay, being small grains of quartz, zircon, tourmaline, hornblende, felspar and iron compounds.
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  • Their silica ranges from about 60 to 45%, varying in accordance with the amount of quartz and alkali-felspar present.
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  • It consists of very fine scaly kaolin, larger, shining plates of white mica, grains of quartz and particles of semi-decomposed felspar, tourmaline, zircon and other minerals, which originally formed part of the granite.
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  • The felspar decomposes into kaolin and quartz; its alkalis are for the most part set free and removed in solution, but are partly retained in the white mica which is constantly found in crude china-clays.
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  • It is made out of locally found materials such as quartz, blue mussel shells, black basalt and worn down colored glass.
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  • The sandstones have more quartz and glauconite, and are only loosely cemented together by calcite.
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  • Where there is plenty of quartz cement it produces hard sandstones and conglomerates.
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  • Oil filled the crest of the reservoir first and prevented extensive quartz cementation.
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  • It is the successor to the now discontinued 10 th second quartz chronograph.
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  • Pink and white pegmatite typically occurs in veins and contains coarse grained quartz and feldspar.
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  • We will now revisit the anisotropic thermal conductivity of quartz.
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  • Now lie or sit down and close your eyes, take the clear quartz crystal in your hand.
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  • Usually rose quartz is coarsely crystalline (meaning the crystals are quite large ).
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  • This series contains the great whin sill, an intrusive quartz dolerite, which is one of the interesting features of local geology.
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  • Matching earrings have the same baroque nuggets of Smokey Quartz, hung from sterling silver earwires for pierced ears.
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  • Snow Quartz crystals have been used since ancient times as powerful healing objects and meditation tools, and to make medicinal elixirs.
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  • Here biotite + sillimanite + quartz aggregates occupy embayments in a neosome garnet.
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  • This is all done in a quartz glass envelope filled with pure xenon gas.
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  • Today it still produces organic stoneground wholemeal flour using French burr stones, a quartz which produces the finest quality flour.
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  • It contains a very high quartz and chert content, so that it is extremely friable.
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  • Minerals include galena, pyrite, calcite and quartz.
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  • Rose Quartz is a master healer on many levels.
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  • A quartz crystal is made up of a hexagonal prism, topped by a hexagonal prism, topped by a hexagonal pyramid.
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  • The porcelain enameled hooded BBQ incorporates the ' Quartz Ignition System ' .
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  • Quartz Quartet Quartz Quartet is made up of four young, very talented string instrumentalists.
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  • First, let it be said, that certain alluvial gold is unquestionably derived from the denudation of quartz lodes.
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  • Inclusions are dominated by glassy quartz, but sand and silver mica are also usually present.
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  • Also analysis using biological reagents is an interest, as in the development of quartz crystal microbalance technology.
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  • Principal Inclusions Rounded limestone (including oolite ), sparse rounded quartz and red iron ore.
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  • How atomic clocks work The part of an atomic clock which is responsible for keeping time is actually a quartz crystal oscillator.
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  • White quartz pebbles were found on or near the bottom of all the ditch segments.
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  • I do use a quartz crystal pendulum for this work.
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  • Granite is a lighter colored igneous rock containing relatively large crystals of the minerals plagioclase, quartz and alkali feldspars such as orthoclase.
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  • The porphyry complex has a quartz porphyry core (exposed in Quebrada Majaz ), which intruded an earlier feldspar porphyry complex.
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  • A quartz crystal is made up of a hexagonal prism, topped by a hexagonal pyramid.
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  • In addition to a common White system three quartz prisms are set up near the front mirror to work as reflectors.
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  • Where an aluminous porphyroblast impinged on a quartz-rich pseudomorph, it did not replace the quartz.
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  • Both the shales and the quartz veins are impregnated with the common sulfide minerals pyrite and arsenopyrite.
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  • Center: Coarsely crystalline pyromorphite on quartz from the main pipe, Bwlchglas Mine.
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  • Put a rose quartz high up near his bed.
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  • The rocks I have used contain some quartz, which may help to create the effect we want.
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  • If so, you can create a very attractive finish with the traditional mix (including quartz ).
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  • Figure 5 here Figure 6 here SST H Fabric The following inclusions were noted in thin-section: rounded quartz.
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  • About a mile to the north are the Singing Sands of white quartz.
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  • The photo to the right shows an example of a single, platy hematite crystal as an inclusion in clear quartz.
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  • No home where there are heart problems should be without rose quartz!
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  • Adding a tiny crystal quartz to each; tie each bottle with a gold ribbon.
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  • The sand grains are made of the mineral quartz.
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  • Cabin Clock Incorporating a high quality quartz alarm movement with clean, smooth lines & a classic face.
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  • Delicate, acicular crystals with tiny quartz crystals attached to their terminations.
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  • A pair of identical quartz crystals with axes arranged mutually perpendicular would be required with output signals added to produce a beat frequency.
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  • You must wish to wear or carry rose quartz, rebellitc tourmaline, lavender, jade or chrysoprase.
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  • Granophyre, because the conglomerate and quartz sandstone lie on top of it and the conglomerate contains some pebbles of granophyre.
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  • Rose Quartz brings powerful healing energies to remove negativity and bring back a strong sense of self-worth and gentle self-love.
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  • The stuff in which the gold occurred at Mount Brown was composed of broken slate with a few angular fragments of quartz.
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  • The rocks are typically ' cleaner ' quartz sands and rather unfossiliferous apart from beds of microscopic sponge spicules.
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  • Continue to use quartz tungsten halogen curing lights as plasma arc curing lights appear to confer no clinical advantage at the present time.
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  • Climb the wall past a quartz vein crack to reach the right end of an overhang.
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  • A standard quartz wedge might show five orders of interference colors making the color bands under view much more compressed for the same magnification.
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  • That's around 300 times less than a quartz wristwatch consumes.
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  • Landolt was disposed to attribute these losses in weight to the containing vessel, which was of glass or quartz, not being absolutely impervious, but in 1908 he showed that, by making allowance for the moisture adsorbed on the vessel, the errors were both positive and negative, and were less than one in ten million.
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  • Subsequently low-grade quartz mines were found and developed, and have furnished a notable part of the gold supply of the country (about $100,000,000 from 1875 to 1901).
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  • On the eastern side of the range, after a steep descent, the granite formation speedily gives place to slates of vast depth, intersected here and there by fissures of quartz containing gold, and in many places covered by limestone which has been superimposed upon the slates.
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  • The mines, which have been constructed for the purpose of working quartz lodes containing gold, are very extensive, and argue a high stage of civilization possessed by the ancient miners.
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  • Amethyst is composed of an irregular superposition of alternate lamellae of right-handed and left-handed quartz.
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  • Brewster, apply the name of amethyst to all quartz which exhibits this structure, regardless of its colour.
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  • The average annual product of India for the period 1886 to 1899 inclusive was £698,208, and its present annual product averages about 550,000 oz., or about £2,200,000, obtained almost wholly from the free-milling quartz veins of the Colar goldfields in Mysore, southern India.
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  • There appears, however, to be some objection to the use of iridio-platinum for weights, as, owing to its great density (Δ=21.57), the slightest abrasion will make an appreciable difference in a weight; sometimes, therefore, quartz or rock-crystal is used; but to this also there is some objection, as owing to its low density (Δ=2.65) there is a large exposed surface of the mass.
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  • Other black specks have been identified as haematite and ilmenite; gold has also been found; other included minerals recorded are rutile, topaz, quartz, pyrites, apophyllite, and green scales of chlorite (?).
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  • In the Ardennes the system is represented by grits and sandstones, shales, slates and quartz schists, and includes also whet slates and some igneous rocks.
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  • The quartz mines near Juneau are among the greatest stamp mills of the world (SEE Juneau).
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  • By the weathering of silicates, silica passes into solution and quartz is deposited as a secondary product in the cavities of basic igneous rocks, and in fact in the crevices and along the joints of rocks of almost all kinds.
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  • For particulars respecting the special characters, modes of occurrence and localities of the more important varieties of quartz, reference may be made to the following articles: AGATE, AMETHYST, AVENTURINE, BLOODSTONE, CAIRNGORM, CARNELIAN, CAT'S-EYE, CHALCEDONY, CHRYSOPRASE, FLINT,HELIOTROPE,JASPER, MOCHASTONE, ONYX, ROCK-CRYSTAL, SARD, SARDONYX.
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  • The former consists of two semicircular plates of quartz, perpendicular to the optic axis and of opposite rotations, placed so as to have a common diameter and having such a thickness that each rotates the plane of polarization of mean yellow light through the same multiple of 90°.
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  • There are many furrows in the sand where some creature has travelled about and doubled on its tracks; and, for wrecks, it is strewn with the cases of caddis-worms made of minute grains of white quartz.
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  • Does anyone have any info on the use of quartz on modern graves?
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  • If so, you can create a very attractive finish with the traditional mix (including quartz).
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  • Figure 5 here Figure 6 here SST H Fabric The following inclusions were noted in thin-section: Rounded quartz.
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  • That 's around 300 times less than a quartz wristwatch consumes.
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  • No home where there are heart problems should be without rose quartz !
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  • Snow quartz helps us to have a focus of purity in ourselves.
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  • The microscope has an epi-illumination system, with rheostat controlled 6v 20 watt quartz halogen system with full bulb adjustment.
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  • Scramble up for 15 meters to reach a quartz wall, riven by two cracks.
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  • A short geological expedition was also undertaken to a nearby hill of rose quartz.
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  • Fuze color changing necklace a unique rose quartz stone necklace that radiates a color changing, glowing aura.
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  • These include quartz inclusions, c. 0. 1mm across and possible sponge spicules, replaced by chalcedony.
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  • Ref: KIQ 08 Price is £ 120 or US $ 215 Kienzle Divers Quartz Wristwatch Outstanding looking Kienzle submariner diver 's wristwatch.
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  • Tangerose quartz combines the colors and the properties of tangerine quartz and rose quartz.
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  • Downstream of the trident passage - pierces passage junction you come across two parallel quartz veins.
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  • While quartz watches have become wildly popular ever since they first arrived on the watch market, many people remain loyal to the mechanical type of watch.
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  • Quartz and recycled glass countertops are also great choices for bringing in unusual colors and patterns.
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  • The building materials included everything from rock, brick and stucco to crystal, marble and quartz.
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  • This bottle features a quartz clock that actually works.
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  • The majority of the shades are universally flattering and wearable, ranging from low-key nude tones (such as Brown Sugar and Patchouli) to vibrant, shimmery shades (such as Quartz and Peony).
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  • The products are made from agate, quartz and amber.
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  • Halogen gas and a regular light bulb filament combine in a quartz envelope to create a high-wattage, yet still cost-effective light source.
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  • Granite or quartz counters with tight patterns can handle more detail and color, so let the counter be your guide.
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  • True granite is an igneous rock made up of mica, feldspar and quartz.
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  • Quartz counters or engineered stone counters are an alternative to natural stone.
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  • There are numerous types of kitchen countertops on the market today, including glass, quartz, granite and concrete.
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  • The quartz, mica and feldspar that make up a granite countertop are ground up and mixed with a pigmented resin.
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  • A quartz counter doesn't require any of this; it doesn't stain, scratch or etch.
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  • Quartz counters can be made in bright, modern colors, or it can mimic the look of honed limestone or marble.
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  • While some people enjoy the uniform look of quartz, this can be a drawback for those who enjoy the rich swirls and veins available in natural stone counters.
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  • The EdenPURE heater is an advanced quartz infrared portable heater built and marketed by Suarez Corporation Industries (SCI), headquartered in Canton, Ohio.
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  • These special bulbs are similar to incandescent bulbs featuring a tungsten resistance wire set within a sheath of high purity quartz.
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  • Quartz counters are fast becoming an alternative to natural stone products like granite because of their stain resistant qualities.
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  • To complement the Arizona kitchen, look for quartz counters that mimic the look of limestone, such as Ceaserstone's Crema.
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  • Engineered stone - This style of countertop can look like stone, but it's really a very hard epoxy mixed with one of the hardest substances known to man -- quartz.
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  • Advantages: Usually a blend of epoxy material and quartz, engineered stone is very strong.
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  • January's alternate birthstone is rose quartz.
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  • These include such materials as untreated flat white and brown diamonds, millennium-aged Tibetan coral beads, rutilated quartz, and hand-picked Brazilian stones.
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  • Amethyst: This purple variety of quartz crystal is believed to stimulate your intuition, and have a calming effect on the nerves.
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  • Quartz crystal: The most powerful form of quartz, this gem is believed to open your mind and body to higher awareness with its powerful energy vibration.
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  • The whole palette of colors is represented from the palest of pastel pink found in rose quartz through to the deep hues of onyx and agates.
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  • Rose Quartz - pink rose quartz is the stone of romance.
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  • Distinctive Designs offers an exquisite bracelet set of rose quartz, handcrafted Balinese sterling silver caps and rose aurora borealis Swarovski crystals with a delicate silver hanging charm.
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  • The type of gemstone will vary from precious stones such as diamonds, emeralds and rubies, through to semi-precious stones such as agates and quartz.
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  • The rings were made from quartz with liquid crystals inside.
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  • Rose quartz, for instance, is said to be the stone of romance.
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  • From the palest of pink rose quartz through to deep black onyx, this wide range of colors gives jewelry designers a rich natural palette to work with.
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  • This includes green jade and coral for a deeper version and peridot and rose quartz for an interesting variation.
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  • Color: If you aren't interested in a plain tree, consider an enameled tree with colorful flair, or a jewel-studded palm tree with emeralds on the fronds and smoky quartz or chocolate diamonds on the trunk.
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  • These are often natural gemstones such as quartz and agate.
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  • Black onyx is part of the quartz family.
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  • The pin has onyx set in silver, and the enhancer has carnelian and quartz accented by man-made diamonds.
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  • Lee makes Denim Carpenter Shorts that come in Original Wash, Quartz or Retro.
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  • The size 55 currently comes in updated colors such as Quartz and Pink Quartz Mirror and Silver with Quartz Mirror.
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  • Rose quartz is associated with the heart chakra and many consider it the love quartz.
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  • You can find many figures carved out of rose quartz and used as Chinese feng shui love symbols.
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  • Other quartz crystals are also used as elements to activate love sectors of your home as well as love symbols being crafted out of this mineral.
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  • You can use a pedestal fountain with an orb made out of stone, ceramic or quartz.
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  • Infrared space heaters generally consist of three essential components - the infrared Quartz light bulbs, a heat exchanger and a fan.
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  • When the space heater is turned on, the infrared Quartz light bulbs produce the infrared rays that get absorbed by the heat exchanger, which is usually made out of a good heat conductor like copper.
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  • While some larger models feature pilot lights, most portable models use a quartz igniter to ignite the propane as it exits the element.
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  • Even a selection of exotic colored quartz is available in several pieces.
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  • Unlike imitation diamonds such as cubic zirconia or cleverly cut quartz, artificial diamonds are real diamonds, they just form through a more controlled, supervised process.
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  • Guests who find a bit of colored sparkle in the field's dirt may walk away with an amethyst, garnet, peridot, hematite, quartz, or other types of gem.
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  • Some stones such as cubic zirconia, quartz, and moissanite can be faceted into lovely jewels, but they are not diamonds.
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  • In truth, the only time a diamond is fake is if it is passed off as something it isn't, such as pretending that a quartz stone is really a natural diamond.
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  • Diamond is actually a misnomer for the double-terminated quartz crystals mined here, which are believed to be over 500 million years old.
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  • While Herkimer diamonds are officially classified as quartz crystals, they are in fact much harder than typical quartz.
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  • Diamonds are gauged for hardness based on the Mohs hardness scale of one to ten with ten being the hardest substance, and Herkimer diamonds rate higher than standard quartz, though they are softer than genuine diamonds.
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  • With precision Quartz movement, stainless steel casing and a dazzling white dial, its exotic look will capture the attention of many passers-by.
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  • In addition, it comes with scratch resistant and water resistant to 30 meters (100 ft.) and precise Swiss quartz movement.
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  • The dependable Swiss quartz movement keeps time with Roman numerals set against a white dial.
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  • Engineered with utmost care, this sleek Cartier Divan watch attached along with a cherry leather strap, oceanic white dial, sapphire crystal, quartz movement, and case dimension approximately 32mm x 19mm x 7mm is invariably beautiful.
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  • This elegant woman's watch is covered in scratch-resistant sapphire crystal, has water resistance up to 30 meters, and a bezel surrounded with gold Roman numerals along with precision Swiss Quartz movement.
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  • In addition, it is Water Resistant up to 30 meters or 100 feet and sways with a Cartier Quartz Movement.
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  • Equipped with Chronograph Quartz Movement, this groovy masculine watch flaunts its Silver Dial with black Roman numerals covered in 18k white gold case.
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  • It features a stark white dial, sapphire crystal with quartz movement, and has a case dimension of 32mm x 19mm x 7mm.
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  • It has Quartz movement and water resistant to a depth of 100 meters / 330 feet, Hourly Time Signal, Auto-Calendar, Day Counter, Daily Alarm, Dual Time,Telememo,Backlight,12/24-Hour Formats, Stopwatch and Shock Resistant.
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  • This Citizen Promaster Aqualand Duplex Dive watches for men comes with Quartz movement, Underwater Depth Display Down to 260 feet, Second Display for Maximum Depth, Dive Time, water Temperature and 4-Dive Memory.
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  • The watch is supported with Scratch resistant sapphire crystal and 200 M water resistant, Polished Stainless Steel, uni-Directional rotating with engraved dive time markers Bezel, Swiss Quartz movement making it a truly unforgettable piece.
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  • With Brushed case and bracelet, an eye catching polished rotating bezel, silver dial, glittering sapphire crystal making quartz movement, screw down crown, 200 meter water resistant and attractive case makes it an exotic piece.
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  • Doled with elegance, this model comes with spiral decoration for the external zone; alternating stainless steel brushed and polished links. 200M Water Resistant, Sapphire crystal and Quartz movement.
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  • Painstakingly designed this Tag Heuer Link Chronometer men's watch offers Quartz Chronograph Movement, Brushed Stainless Steel Bracelet, Well-designed Stainless Steel Case, a sleek silver Dial and an elegant Unidirectional Turning Bezel.
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  • Other features reflect a triumph of precision engineering with an elegant Screw-Down Crown & Caseback. 200M Water Resistant, Sapphire crystal and Quartz movement.
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  • A dazzling polished case and bracelet, black dial with diamond, glittering rotating bezel, sapphire crystal, timely quartz movement, screw down crown, 200 meter water resistant.
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  • The radiant Pink Mother of Pearl dial makes it an outstanding piece along with quartz Movement, date at 3, Double safety clasp, Scratch resistant Sapphire Crystal and Water resistant to 200m/660ft.
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  • Screw-Down Crown & Case back, 200M Water Resistant and Sapphire crystal with Quartz movement adds to its femininity.
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  • An ideal Accessory for every occasion, this Tag Heuer Link Quartz men is available with groovy Black Dial, dazzle of Sapphire Crystal with Brushed Steel Finish and 200 Meters Water Resistant.
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  • This urban Tag heuer new link men's watch bewilders people with its groovy Purple Dial, Battery Operated Quartz Movement, elegant Scratch Resistant Sapphire Crystal, Polished Steel Case & Bracelet, 200 Meters / 660 Feet Water Resistant.
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  • Wrapped in 18kt case and bracelet it is set with quartz movement.
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  • Scratch proof sapphire crystal, cabochon sapphire crown, precision quartz movement, and water resistant to 30 meters.
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  • Equipped with Quartz Movement., this 18-karat gold watch is attached to a sleek bracelet & strap, the teal colored dial with Diamond bezel and Black roman numerals imprinted against the display gives a different touch.
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  • Cartier Tortue Swiss Quartz is full of grace and sophistication.
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  • Functions include Clear resin band with buckle closure, silver face with Light Green Round and Duplex display having Quartz movement, Shock resistant, water resistant up to 100 meters, Backlight with Afterglow,1/100 Sec.
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  • In 1968, Seiko watches earned the honor of introducing the world's first quartz wall clock.
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  • Continuing its list of firsts in the watch world, Seiko marketed the first quartz watch in 1969, and its pioneering efforts continued by introducing the world's first TV watch.
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  • Quartz Movement: A watch movement powered by a quartz crystal.
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  • Delightfully simple, yet undeniably powerful, the Omega Constellation Quartz is the perfect timepiece for the easy-going man.
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  • The Omega Constellation Quartz is a shining example of what Omega has to offer for men.
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  • Coming in a variety of colors, the Constellation Quartz is a striking timepiece that is sure to command respect from around the room, no matter where you are.
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  • The Seiko Men's Alarm Chronograph Watch comes equipped with Japanese Quartz, for those looking for something unique.
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  • Breitling advertises the Breitling Chrono Colt Quartz as utilizing SuperQuartz technology, and given Breilting's high standard of quality, I can only imagine what SuperQuartz is capable of.
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  • The Breitling Chrono Colt Quartz II Men's 590 is available for a little over $2,000 and upholds the Breitling standard of quality.
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  • It comes with a calendar, quartz movement, and is water resistant up to 500 Meters.
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  • The Breitling Colt Quartz II Men's 302II can survive underwater up to 500 meters, which is definitely a lot of bang for your buck.
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  • It features a blue dial, quartz movement, and a calendar.
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  • Anothing stunning entry in the Breitling Colt line, the Breitling Colt Quartz II Men's 609 upholds the Breitling name with a stunning blue dial, quartz movement, and calendar.
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  • Elegant and sturdy, the Breitling Colt Quartz II Men's 611 is water resistant up to 500 meters.
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  • It features a sleek, black dial, calendar, and quartz movement.
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  • The Breitling Colt Quartz II Men's 613 is powered by Quartz technology, and features a calendar that displays the date at 3 o'clock.
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  • Chronographic technology has been around since the 1830s, but Seiko invented the quartz chronograph in 1983 and is known as the maker of the world's finest sports watches; among these, the pilot watch.
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  • The Sportura line is made with the automotive community in mind and comes with the classic quartz chronograph, a solid steel casing and saphire glass facing for ease of reading.
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  • The De Ville Prestige Quartz Small line uses a quartz movement to keep time.
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  • Prestige Quartz Small watches are water resistant down to 100 feet.
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  • Movements are quartz on some models and automatic on others.
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  • The Seamaster 300M Quartz watch is water resistant down to 1000 feet.
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  • Aqua Terra Quartz and 300M Quartz watches use quartz movements to keep time while the Aqua Terra Automatic watches employ self-winding movements.
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  • The Constellation collection includes chronometer watches that have gone through precision testing, quartz and perpetual calendar watches, which can even keep the correct date in leap years.
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  • Buyers can choose from chronograph styles, with tiny dials to measure small time periods, quartz, chronometers, and GMT watches for travelers that make it easy to tell what time it is back home.
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  • Movements generally fall into two categories: mechanical and quartz.
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  • Quartz watches first arrived on the scene in the seventies and quickly became popular.
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  • Quartz watches do not need to be wound because they receive their power from batteries or sometimes from light.
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  • They use tiny quartz crystals to keep time.
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  • The battery inside the watch causes the quartz to begin vibrating.
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  • These watches typically use quartz movements.
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  • Some makers of Braille watches include Carerra and even Omega and Quartz.
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  • The silver or gold-plated charm bracelet features rhodium plating, crystal mineral and quartz movement.
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  • It has a quartz movement, so no winding is required, and a date function so the wearer will be able to know what day of the month it is at a glance.
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  • On Christmas day in 1969, they started what they call the "quartz revolution" and pioneered the first quartz watch.
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  • Quartz crystal watches are known for time keeping accuracy.
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  • This watch is now offered with standard crystal quartz mechanics.
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  • The company thrived for many years, but suffered during the 1970s, when the advent of quartz watches caused consumers to abandon fine Swiss watches in favor of convenient quartz.
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  • In 1969, Seiko brought the first quartz watch to the market, a technology that would permanently alter the watch market as droves of people turned to watches that they did not have to wind each day.
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  • Most of the Bradley watches were the wind-up variety, however in the 1980s the company produced some quartz models that ran on battery power.
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  • The movement is quartz, the case is made from 18K gold, the dial is a white mother of pearl and the markers are made from diamonds.
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  • This model offers Japanese quartz movement and a metal band that will stretch to fit various ring sizes (adult sizes only).
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  • Rose quartz, a pale pink stone, is highly popular and complements a range of colors and styles.
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  • Rose quartz is also said to have healing and positive qualities including being the stone of love, bringing romantic fortune to the wearer.
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  • The watches are designed to be reliable and to look great, therefore Swiss quartz and mineral crystal is used extensively in the watches' movements to give excellent time keeping features.
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  • Swiss quartz components help to ensure accurate time keeping.
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  • Mudd watches are electric with quartz movement, making them excellent time keepers.
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  • Featuring a quartz movement, this watch should be reliable and hard wearing, making an excellent choice for everyday as well as dress wear.
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  • A nurse fashionable quartz watch can be a great choice for a nursing professional.
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  • There are many types and styles of quartz watches available and this means that there is bound to be one to suit every taste.
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  • Quartz watches are known for their reliability and excellent time keeping qualities and this makes them a great choice for a nurse, who needs to track exact times for administering medications or taking blood pressure and other vital signs.
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  • When choosing a watch for a nurse, fashionable quartz watch colors include the very palest of shades through to vibrant primary colors that make a bold statement.
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  • Men's Chronograph Skindiver Watch: This stainless steel watch has a rotating unidirectional click-stop bezel, sapphire crystal, water resistance up to 330 feet, a tachymeter inner ring and quartz movement.
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  • The watch runs on quartz movement and features a calendar, sweep second-hand, a screw-down crown and water resistance up to 165 feet.
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  • It has a mineral crystal face, runs on quartz movement and has a leather strap.
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  • Watches in the Eco-Watch range are powered using light powered Japanese quartz movement which ensures excellent time keeping functionality.
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