Metallic microcrystals of the new selenide mineral petricekite (IMA 2015-111) in a matrix of the other massive selenides clausthalite, naumannite, kruaite, eucairite,and eskebornite and also blue chalcomenite. From Cacheuta Mine, Mendoza, Argentina. — Photo: David Hospital · CC BY-SA 4.0
Petříčekite
Petříčekite is an IMA-recognized mineral species in the sulfide class, with the chemical formula CuSe₂.
It crystallizes in the orthorhombic crystal system (space group Pnnm). It is a member of the Marcasite structural group.
IMA symbol Pčk, IMA status: approved, named in 2015.
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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