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silicious example sentences
silicious
1. These creatures, to judge from the shrivelled remains that have fallen into human hands, were bipeds with flimsy, silicious skeletons (almost like those of the silicious sponges) and feeble musculature, standing about six feet high and having round, erect heads, and large eyes in flinty sockets
2. In the silicious matter which the water deposits is perhaps the bony system, and in the still finer soil and organic matter the fleshy fibre or cellular tissue
3. As to the mineralizing matter, it is evidently silicious, and the specimens are principally the holzstein of Werner; crystals of quartz are apparent in the cavities; some parts are agatized, and veins of chalcedony occasionally pervade the fissures: they are not impressible by steel, and give fire with it
4. Interspersed among the sandstone of the mountains we often find very beautiful and interesting specimens of hornstones, assuming a resemblance to all the silicious stones, from the chalcedony to the jasper
5. The silicious carbonate of lime may be worth distinguishing from the common limestone
6. It is composed of fine silicious grains, is easily wrought, and from its colour, has the appearance at a small distance of white marble
7. It is composed of pebbles, and fragments of silicious and calcareous stones of almost every size, from a grain, to several inches in diameter, strongly and perfectly cemented
8. Owing to the silicious stones which are frequently imbedded through the mass, it is wrought with much difficulty; but when finished, shows a fine polish, and is unquestionably one of the most beautifully variegated marbles, that ever ornamented any place
9. It is composed of fine and large grains of silicious stones, nearly white, and resembling pebbles of white quartz: the texture is firm
10. It is its association with a description of minerals, all of which appear to be silicious
11. Indeed the different varieties of it are generally scattered over the surface, in pieces so small, that for convenience sake, the whole may be denominated a silicious gravel
12. It is found of different colours; compact, and porous or cellular; of every size; simple and associated with other silicious stones; massive and crystallized
13. Hornstone, next to quartz, is the most abundant of the silicious minerals associated with limestone
14. On the hills (and there are many of them) there are two kinds of soil, the silicious and the argillaceous, the first is formed from the decomposition of the rocks which once covered the surface, the latter from the slate which lay under them
15. After crossing it, you see no more limestone; and, which excites more joy in the traveller, no more of the silicious gravel, with which it is associated, and which is so troublesome to the feet of horses
16. The tourmalines are contained chiefly in a false vein of silicious feldspar and quartz, which begins in the centre of the upper edge of the bed of granite, and passes obliquely, descending to the northeast, about twenty feet, where it is intercepted from sight by the mica slate
17. This vein of silicious feldspar contains also a vein of bluish white transparent quartz, which is from three to eight inches thick, and passes through the centre of the vein of feldspar
18. Hunt, of Northampton, I determined the feldspar to be a new variety, which has been since confirmed by Professor Hauffman, and now ranks as a new sub-species, under the name of silicious feldspar
19. The silicious feldspar, which I suspect to be the basis of the granite, crystallizes in thin rhomboidal tables
20. They are triedral prisms, with convex faces, striated longitudinally, and generally traversed perpendicularly to the axis, with very small fissures filled by some silicious substance, probably feldspar
21. The rose mica is found in a large grained granite with amorphous quartz and silicious feldspar, crystallized and amorphous
22. Its analysis has never been attempted by chemists; but the earthy sediment which is the result of its accumulated deposition, proves that it is a compound of earthy particles in a peculiar state of aggregation, and in which alumine appears to preponderate, rather than calcareous or silicious earths or oxides
23. Thus, in building parlance, the grains are the rubble of the wall, the currents the quarrymen, masons and laborers, and the silicious infiltration the mortar
24. The only difference between the sandstone in which it was imbedded and itself is that in the latter case the process of silicious deposit has gone further, so that all the interstices between the grains have been absolutely filled up with the cement
25. It is a remarkable fact that most of the pebbles included in the red rocks are quartzites, or indurated silicious sandstones; and, as showing that their solidity and hardness are due only to a further continuance of the deposit of silica in the interstices, it has been proved that the purple quartzites are purple only by reason of the original coloration of the grains which have been enclosed between the original grains and the secondary silica
