Selenite sentence example
- It consists mainly of grey dreary flats covered with selenite; and a little below the surface, gypsum.
- Soc., 1898, 20, p. 595), from the analysis of silver selenite and the reduction of the double selenium ammonium bromide, give values from 79 2 77 to 79.3 6 7; whilst J.
- Meyer (Ber., 1902, 35, p. 1 59 1) by the electrolysis of silver selenite in the presence of potassium cyanide obtained the value 79.22.
- Such plates are generally made of mica or selenite, and the normal to the plane of polarization of the most retarded stream is called "the axis of the plate."
- In fact, the lateral systems are obtained when a plate of selenite is substituted for the quartz.Advertisement
- Below the analyser G a plate H of selenite or mica may be put in the course of the rays.
- In this part of its course the rocky sides of the valley, which sometimes closely approach the river, are composed of marls and gypsum, with occasional selenite, overlaid with sandstone, with a topping of breccia or conglomerate, and rise at places to a height of 200 ft.
- The mineral was probably included with selenite under Pliny's term lapis specularis.
- Thus the sulphate constitutes the minerals anhydrite, alabaster, gypsum, and selenite; the carbonate occurs dissolved in most natural waters and as the minerals chalk, marble, calcite, aragonite; also in the double carbonates such as dolomite, bromlite, barytocalcite; the fluoride as fluorspar; the fluophosphate constitutes the mineral apatite; while all the more important mineral silicates contain a proportion of this element.
- Children can be given supplements containing 1.0 mg sodium selenite.Advertisement
- In the following year he discovered the change, produced by change of temperature, in the direction of the optic axes of selenite.
- selenite crystals on the mud floor.
- selenite slip.
- Manufacturers are expected to replace organic selenium with sodium selenite.
- Calcium sulphate, CaSO 4, constitutes the minerals anhydrite (q.v.), and, in the hydrated form, selenite, gypsum (q.v.), alabaster (q.v.), and also the adhesive plaster of Paris (see Cement).Advertisement
- Pete arranged some photographs of the passage profile and the selenite crystals on the mud floor.
- Viewing is greatly improved by the " blue " selenite slip.