Company Name: |
Alfa Aesar
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Tel: |
1 888 343-8025 Specialty/Bulk |
Email: |
tech@alfa.com |
Products Intro: |
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Product Name: | TOPAZ | Synonyms: | TOPAZ;CITRINE;Topaz, naturally occuring mineral, grains, approximately 0.06-0.19in;Tongs for crucible carrier | CAS: | | MF: | Al2SiO4(F,OH)2approximate | MW: | 191.23 | EINECS: | | Product Categories: | | Mol File: | Mol File | ![TOPAZ Structure]() |
| TOPAZ Chemical Properties |
Provider | Language |
ALFA
| English |
| TOPAZ Usage And Synthesis |
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 |
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