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Wollastonite-7A

Formula:
CaSiO
 
3
Colour:WhiteLustre: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).



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-7A

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Physical Properties of Wollastonite-7A

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

Chemical Properties of Wollastonite-7A

Formula:
CaSiO
 
3
Essential elements:Ca, O, Si
All elements listed in formula:Ca, O, Si

Other Names for Wollastonite-7A

Synonyms:
Wollastonite-7T
Other Languages:
Russian:Волластонит-7A

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-7A

Reference List:Mineral.J. (1978), 9, 169

Articles/Blogs about Wollastonite-7A

Internet Links for Wollastonite-7A

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    Localities for Wollastonite-7A

    (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.
    Japan
     
    • Honshu Island
      • Chugoku Region
        • Hiroshima prefecture
    		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
            • Bitchu-cho (Bicchu-cho)
    Mineral and/or Locality
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