Formula: Colour: White Lustre: Vitreous Hardness: 5 Name: Named after William Hyde Wollaston (1766-1828), English chemist and mineralogist who discovered palladium (1804) and rhodium (1809) and invented the reflecting goniometer (1809) and the camera lucida (1812).
A polytype of
The polytype wollastonite-7A (also known as -7T) was originally described from Fuka mine, Bitchu-cho (Bicchu-cho), Takahashi, Okayama Prefecture, Chugoku Region, Honshu Island, Japan.
Classification of Wollastonite-7Å mindat.org URL: http://www.mindat.org/min-7370.html Please feel free to link to this page. Physical Properties of Wollastonite-7Å Lustre: Vitreous Colour: White Streak: White Hardness (Mohs): 5 Chemical Properties of Wollastonite-7Å Formula: Simplified for copy/paste: CaSiO 3 Essential elements: Ca, O, Si All elements listed in formula: Ca, O, Si Other Names for Wollastonite- 7Å Synonyms: Other Languages: Other Information Health Warning: No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. References for Wollastonite-7Å Reference List: - +
Henmi, C., Kusachi, I., Kawahara, A., and Henmi, K. (1978) 7T wollastonite from Fuka, Okayama Prefecture. Mineralogical Journal: 9: 169-181.
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Localities for Wollastonite-7Å
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(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Henmi, C., Kawahara, A., Henmi, K., Kusachi, I., and Takeuchi, Y. (1983) The 3T, 4T and 5T polytypes of the wollastonite from Kushiro, Hiroshima Prefecture, Japan. American Mineralogist: 68: 156-163.
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