Superb crystals of Gartrellite on Carminite From Namibia

Posted on 22 July 2017 by admin

Gartrellite
Formula: Pb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)
System: Triclinic
Colour: Greenish yellow
Lustre: Earthy
Hardness: 4½


Strengite
Formula: FePO4 · 2H2O
System: Orthorhombic
Colour: Purple, violet, pink, …

Hardness: 3½ – 4

From: Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia


Credit: Christian Rewitzer FMF


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