Kushiroite Explained

Kushiroite
Formula:CaAlAlSiO6
Imasymbol:Ks

Kushiroite is a rare mineral of the pyroxene group, with formula CaAlAlSiO6. It is the fully aluminian member. The formula of kushiroite corresponds to the molecule (or component) known as Calcium-Tschermak (Ca-Tschermak), which dominates in the composition of kushiroite. Kushiroite is an aluminium-analogue of other pyroxene-group members, davisite, esseneite, and grossmanite. It was found in a chondrite meteorite within refractory inclusions.[1] [2]

The mineral crystallizes in the monoclinic crystal system (space group C2/c).[3]

Notes and References

  1. Kimura, M., Mikouchi, T., Suzuki, A., Miyahara, M., Ohtani, E., and El Goresy, A., 2009, Kushiroite, CaAlAlSiO6: A new mineral of the pyroxene group from the ALH 85085 CH chondrite, and its genetic significance in refractory inclusions. American Mineralogist 94(10), 1479-1482.
  2. Web site: Kushiroite: Kushiroite mineral information and data . Mindat.org . 2016-03-02.
  3. Okamura . F.P. . Ghose . S. . Ohashi . H. . American Mineralogist . 59 . 1974 . 549–557 . Structure and crystal chemistry of calcium Tschermak's pyroxene, CaAlAlSiO6 . 30 December 2020.

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