Back makarochkinite on matrix from the type and only known locality worldwide: Ilmen Mountains, Chelyabinsk Oblast, Russian Federation. Named after Russian Uralian mineralogist Boris A. Makarochkin (1908-1988). — Photo: David Hospital · CC BY-SA 4.0
Makarochkinite
Makarochkinite is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₄[Fe²⁺₈Fe³⁺₂Ti₂]O₄[Si₈Be₂Al₂O₃₆].
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Sapphirine structural group.
IMA symbol Mkr, IMA status: approved, named in 2002.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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