Excellent crystals of Gartrellite on Carminite From Namibia

Gartrellite
Method: Pb(Cu,Fethree+,Zn)2(AsOfour,SOfour)2 · 2(H2O,OH)
System: Triclinic
Color: Greenish yellow
Lustre: Earthy
Hardness: 4½


Strengite
Method: FePO4 · 2H2O
System: Orthorhombic
Color: Purple, violet, pink, …

Hardness: 3½ – four

From: Tsumeb Mine, Tsumeb, Oshikoto Area, Namibia


Credit score: Christian Rewitzer FMF


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