Kamchatkite
Kamchatkite is an IMA-recognized mineral species in the sulfate class, with the chemical formula KCu₃O(SO₄)₂Cl.
It crystallizes in the orthorhombic crystal system (space group Pna2_1).
Key properties: Mohs hardness 3.5; specific gravity 3.48; Yellow streak; Vitreous luster; optically biaxial.
IMA symbol Kmc, IMA status: approved, named in 1987.
A volcanic sublimate formed between 120 ° C and 140 ° C.
It is found associated with Ponomarevite, tolbachite, klyuchevskite, hematite.
The name refers to its occurrence on the Kamchatka Peninsula, Russia.
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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