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| Formula: | Al2(SiO4)(FOH)2 |  Click to see a larger image |
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| Crystal: | Orthorhombic | |||
| Hardness: | 8 | |||
| Spec. Gr.: | 3.49-3.57 | |||
| Streak: | White | |||
| Cleavage: | Perfect basal | |||
| Location: | Mogok, Myanmar |
| Topaz is found in colors of light-blue, pale violet, pink, golden-brown, greenish and white. Fine crystals are found at Ouro Preto, Minas, Gerais, Brazil (honey-brown), Little Three mine, Ramona, California (blue), and Gilgit division, Pakistan (sherry-colored). In 1998 a few absolutely clear, pure white, well-formed topaz crystals (one is displayed in the UCSB Geology Collection) were found at the Pain Pyit mine near Mogok, Myanmar, formerly Burma. |
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Bibliography: Svenek, Jaroslav, Minerals, 1987, pg. 176-177. |
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