Goryainovite
Goryainovite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Ca₂(PO₄)Cl.
It crystallizes in the orthorhombic crystal system (space group Pbcm).
Key properties: Mohs hardness 4; specific gravity 2.98; White streak; Vitreous luster; optically biaxial.
IMA symbol Gyv, IMA status: approved, named in 2015.
Found in diopside-amphibole skarn in metamorphosed greenstone, metavolcanic and metasedimentary rocks.
It is found associated with Magnetite, serpentine, spinel, anhydrite, thorianite, dolomite, magnesite.
The mineral was named to honor Pavel Mikhailovich Goryainov (b.
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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