Petrovskaite
Petrovskaite is an IMA-recognized mineral species in the sulfide class, with the chemical formula AuAgS.
It crystallizes in the monoclinic crystal system.
Key properties: Mohs hardness 2–2.5; specific gravity 9.5; Dark gray streak; Dull metallic. Anisotropism: Slight. R1 –R2: n.d luster.
IMA symbol Pvk, IMA status: approved, named in 1983.
At a depth of about 60–65 m in a gold deposit.
It is found associated with Gold, chlorargyrite.
In honor of Nina Vasil’evna Petrovskaya (1910–1991), Russian mineralogist, Institute of Geology of Ore Deposits, Petrology, Mineralogy, and Geochemistry, Moscow, Russia, specialist in gold deposits.
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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