Gladkovskyite
Gladkovskyite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula MnTlAs₃S₆.
Key properties: Mohs hardness 2–2.5; specific gravity 4.356; Red streak; Adamantine luster.
IMA symbol Gkv, IMA status: approved, named in 2018.
Found in limestone breccias cemented by realgar, orpiment, baryte, pyrite, clinochlore, fluorapatite, quartz, and talc.
It is found associated with Alabandite, bernardite, christite, cinnabar, coloradoite, dalnegroite, gillulyite, gold, hutchinsonite, imhofite, lorandite, metacinnabar, philrothite.
The mineral was named to honor Russian geologist Boris Aleksandrovich Gladkovsky (1937-1990), who discovered the Vorontsovskoe gold deposit.
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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