The sand should be coarse-grained and hard.
Of these the most important is the great oval mass of granite in the North, composed of two varieties; one, coarse-grained and older, forms the outside rim, while the fine-grained and newer type occurs in the interior.
Such a rock is typically exemplified by a coarse-grained sandstone or conglomerate, while a limestone may be naturally porous, or, like the Trenton limestone of Ohio and Indiana, rendered so by its conversion into dolomite and the consequent production of cavities due to shrinkage - a change occurring only in the purer limestones.
They vary in texture from a fine-grained compact oolite to a coarse-grained rock composed of angular or rounded fragments, and they commonly exhibit strongly marked false bedding.
On the south coast of the same island are coarse-grained, brownish micaceous and light-coloured calcareous sandstone and marls, containing fossils, which render it probable that they are of the same age as the coal-bearing Jurassic rocks of Brora (Scotland) and the Middle Dogger of Yorkshire.
The coarse-grained grey Rumanian caviare is forwarded to Berlin, and there blended with Russian caviare.
Hence sands are more coarse grained than clays.
Pink and white pegmatite typically occurs in veins and contains coarse grained quartz and feldspar.
See also cut-off grade Gabbro A coarse grained igneous rock consisting of calcic feldspar, pyroxene and commonly hornblende and/or olivine: appx.
fine-grained rocks are in general more prone to these processes than coarse grained parts of the same rock type.
solidifysaltic magmas solidified into coarse-grained gabbroic rocks which form the earliest Cuillin Center.
The basaltic magmas solidified into coarse-grained gabbroic rocks which form the earliest Cuillin Center.
Richard Strauss, in his edition of Berlioz's works on Instrumentation, paradoxically characterizes the classical orchestral style as that which was derived from chamber-music. Now it, is true that in Haydn's early days orchestras were small and generally private; and that the styles of orchestral and chamber music were not distinct; but surely nothing is clearer than that the whole history of the rise of classical chamber-music lies in its rapid differentiation from the coarse-grained orchestral style with which it began.
At first it becomes more coarse-grained, like the Firn Schnee of the Alps, and is moist by melting during the summer.
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