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Smoky quartz is a brownish grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystals. [6] The color of smoky quartz is produced when natural radiation, emitted from the surrounding rock, activates color centers around aluminum impurities within the ...
Topaz is a gemstone. In cut and polished form, it is used to make jewelry or other adornments. Lower quality topaz is commonly used as an abrasive material due to its hardness and it is used to produce refractory materials for high temperature environments. [7] Topaz can be used as a flux in steel production. [23]
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 November 2024. Varieties of the color brown Brown Common connotations Autumn, Thanksgiving, earth, dirt, chocolate Color coordinates Hex triplet #964B00 sRGB B (r, g, b) (150, 75, 0) HSV (h, s, v) (30°, 100%, 59%) CIELCh uv (L, C, h) (40, 72, 31°) Source ColorXS ISCC–NBS descriptor Strong brown B ...
The major collecting areas are on the west side of the mountain and they contain the usual assortment of smoky quartz and amazonite, although, like the Tarryalls, the amazonite is usually very pale and is most often grades into plain microcline. Devils Head is most noted for large topaz crystals and even larger smoky quartz crystals.
Smoky Topaz by Grace M. Bolen. Grace Marie Bolen (born Missouri; July 20, 1884 – February 16, 1974) was an American composer of ragtime music. Her first composition was submitted when she was 14. [1] "Smoky Topaz", from 1901, is one of her noted works. [2] Bolen appears to have stopped publishing her music when she married.
Quartz. Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2. Quartz is, therefore, classified structurally as a framework silicate mineral ...
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