Krupičkaite
Krupičkaite is an IMA-recognized mineral species in the arsenate class, with the chemical formula Cu₆[AsO₃(OH)]₆·8H₂O.
It is a member of the Lindackerite structural group.
Key properties: Mohs hardness 2; specific gravity 3.123; White streak; Vitreous luster.
IMA symbol Kpč, IMA status: approved, named in 2020.
Occurs as secondary crusts on cemented fragments with strongly altered relics of primary minerals.
It is found associated with Tennantite, Bi-rich tennantite, galena, chalcopyrite, bornite, chalcocite, uraninite, quartz.
The mineral was named to honor Professor Jiří “George” Krupička (1913-2014), a polymath, linguist, geologist, and astronomer.
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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