Pale tan crystal aggregates of the rare Fe arsenate mineral kamarizaite from the type locality in Kamariza, Lavrion, Greece, and associated to brown jarosite. Ex. Erich Laskowski collection — Photo: David Hospital · CC BY-SA 4.0
Kamarizaite
Kamarizaite is an IMA-recognized mineral species in the arsenate class, with the chemical formula Fe³⁺₃(AsO₄)₂(OH)₃·3H₂O.
It crystallizes in the orthorhombic crystal system.
Key properties: Mohs hardness 3; specific gravity 3.16; Light yellow streak; Porcelain-like luster; optically biaxial.
IMA symbol Kmr, IMA status: approved, named in 2008.
From supergene alteration of primary Pb-Zn ore.
It is found associated with Goethite, scorodite, jarosite.
The name refers to the mine where the first studied samples were collected.