Krasheninnikovite
Krasheninnikovite is an IMA-recognized mineral species in the sulfate class, with the chemical formula KNa₂CaMg(SO₄)₃F.
It crystallizes in the hexagonal crystal system (space group P6_3/mcm).
Key properties: Mohs hardness 2.5–3; specific gravity 2.68; White streak; Vitreous luster; optically uniaxial.
IMA symbol Krh, IMA status: approved, named in 2011.
Forms as a sublimate around an active volcanic fumarole.
It is found associated with Tenorite, thenardite, hematite, euchlorine, blödite, vergasovaite, fluorophlogopite.
The mineral was named to honor the Russian geographer, ethnographer, and naturalist Stephan Petrovich Krasheninnikov (1711-1755), one of the first scientists who researched and published on Kamchatka.
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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