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Helmutwinklerite

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DLN151068

Helmutwinklerite

Type Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 0.8 × 0.3 cm
Description

Extremely rare yellowish crystals of helmutwinklerite from the type and most important locality of the only two known localities for the species, in germanite matrix. Unusual morphology and color for this mineral, but the sample has been analyzed (see a copy of the analysis in the photo).
Don't miss the opportunity to get such a sought after rarity from Tsumeb !.
Note.- Shipping costs are intended for Certified Mail. If you prefer the cheaper ordinary mail, please ask.

Mineral Data
What's on the rock

Helmutwinklerite

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

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