| Company Name: |
Alfa Aesar
|
| Tel: |
1 888 343-8025 Specialty/Bulk |
| Email: |
tech@alfa.com |
| Products Intro: |
|
|
| 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 |
|