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Wollastonite-7Å

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Formula:
CaSiO3
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 Wollastonite

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

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Physical Properties of Wollastonite-7Å

Vitreous
Colour:
White
Streak:
White
Hardness (Mohs):
5

Chemical Properties of Wollastonite-7Å

Formula:
CaSiO3
Essential elements:
All elements listed in formula:

Other Names for Wollastonite-

Name in Other Languages:

Other Information

Health Risks:
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.

Internet Links for Wollastonite-7Å

Localities for Wollastonite-7Å

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Japan
 
  • Honshu Island
    • Chugoku Region
      • Hiroshima prefecture
        • Hiba-gun
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.
      • Okayama Prefecture
        • Takahashi City
          • Bicchu-cho (Bitchu-cho)
            • Fuka
Henmi, C., Kusachi, I., Kawahara, A., & Henmi, K. (1978). 7T wollastonite from Fuka, Okayama Prefecture. Mineralogical Journal, 9(3), 169-181.
Mineral and/or Locality  
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