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quartz
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nature : SiO2 is widely distributed in a rock-forming minerals. Generally referred to as the mean low temperature quartz silica. Trigonal system. The six-party appearing cylindrical or tapered again. Usually in druse or granular, massive clusters. A transparent, translucent or opaque. Melt fracture. Glass shiny, fracture showed oil sheen. Hardness 7. Density 2.65-2.66. Quartz different colors, transparent colorless crystals called crystal (rock crystal), purple called Amethyst (Amethyst), shallow Poseate called rose quartz (rosy quartz), dark brown to tobacco smoke are known crystal (smoky quartz), a black-MO Jing-opaque (black quartz). Black light gray, black, brown color and were tuberculosis - like or ribbon Aphanitic for flint (flint), gray, red-brown, red, green and other colors from yellow cinnamon emulsion, kidney-like, fibrous and globular for Ba [c (h) alcedony]; The band was in Central Slow called agate (Agate); red blood called Bloodstone (bloodstone) and so on. Quartz uses quite extensive. See crystal, Sr, agate, opal and quartz sand.


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Structure:
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More Detailed Data:
1) quartz
2) quartz
3) silicon dioxide
4) fused quartz;fused silica
5) quartzite
6) quartzite
7) quartz sand
8) quartz glass;silica glass;fused quartz;fused silica
9) piezoelectric quartz
10) quartz glass;fused silica
Notice Some description was translated by software and the data is only as a reference.
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