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Zincgartrellite & Calcio-duftite

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SKY174681

Zincgartrellite & Calcio-duftite

Rare Mineral
Type Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.3 × 1.3 cm
Description

Zincgartrellite is a relatively new mineral from Tsumeb described in 2000, which is the type and only known locality worldwide !. This specimen presents a very nice combination of greenish-yellow zincgartrellite covering maybe tennantite and associated to perfectly developed grass green cuprian duftite . Both minerals (zincgartrellite and calcian duftite) have been analyzed by SEM/EDS (see photo of the zincgartrellite analysis) and the two analyses will be sent to the buyer. Minor globular malachite is also present. Very nice under the microscope !

Mineral Data
What's on the rock

Zincgartrellite

Formula: 
Pb(Zn,Fe3+,Cu)2(AsO4)2·2(H2O,OH)
Strunz: 
8.CG.20
Crystal System: 
Triclinic
Hardness: 
4.5
Streak: 
Yellow
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Calcio-duftite

Variety Of: 

Duftite

Formula: 
PbCu(AsO4)(OH)
Strunz: 
8.BH.35
Hardness: 
4.5
Formula: 
(Pb,Ca)CuAsO4(OH)
Hardness: 
0.0

Seller Information

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