TOPAZ
- Product Name
- TOPAZ
- Chemical Name
- TOPAZ
- Synonyms
- TOPAZ;CITRINE;Tongs for crucible carrier;Topaz, naturally occuring mineral, grains, approximately 0.06-0.19in
- CBNumber
- CB2369709
- Molecular Formula
- Al2SiO4(F,OH)2approximate
- Formula Weight
- 191.23
- MOL File
- Mol file
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TOPAZ Chemical Properties,Usage,Production
Definition
A hydrous aluminosilicate mineral containing some fluoride ions, used for making refractories, glasses, and glazes. A clear pale yellow or brown form is used as a gemstone.
Definition
topaz: A variably coloured aluminiumsilicate mineral,Al2(SiO4)(OH,F)2, that forms orthorhombiccrystals. It occurs chieflyin acid igneous rocks, such as granitesand pegmatites. Topaz is valuedas a gemstone because of its transparency,variety of colours (the wineyellowvariety being most highly prized), and great hardness (8 on theMohs’ scale). When heated, yellow orbrownish topaz often becomes arose-pink colour. The main sources oftopaz are Brazil, Russia, and the USA.
TOPAZ Preparation Products And Raw materials
Raw materials
Preparation Products
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