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Carminite & Gartrellite

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SKY513154

Carminite & Gartrellite

Type Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.2 × 0.2 × 0.2 cm
Description

Small but very nice specimen of carminite crystals (a Pb-Fe arsenate) associated to yellowish green abundant gartrellite crystals. Gartrellite was labeled as RRR in Tsumeb II Gebhard book (Extremely rare, single occurrence with less than 10 specimens) and carminite was labeled as R in the same book (rare, several occurrences with a few specimens).

Ex-Fahle collection specimen, label included (from 1979, see photo attached) (Fahleite was named in his honour).

Very nice under the microscope !.

Mineral Data
What's on the rock

Carminite

Formula: 
PbFe3+2(AsO4)2(OH)2
Strunz: 
8.BH.30
Crystal System: 
Orthorhombic
Hardness: 
3.5
Type Locality: 
Louise Mine, Bürdenbach, Altenkirchen, Wied Iron Spar District, Westerwald, Rhineland-Palatinate, Germany

Gartrellite

Formula: 
Pb(Cu,Fe3+,Zn)2(AsO4,SO4)2·2(H2O,OH)
Strunz: 
8.CG.20
Crystal System: 
Triclinic
Hardness: 
1.0 - 2.0
Streak: 
Yellow
Type Locality: 
Ashburton Downs Station, Ashburton Shire, Western Australia, Australia
Labels
Label Images - only: Carminite & Gartrellite

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