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Feinglosite & Helmutwinklerite

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SKY624099

Feinglosite & Helmutwinklerite

Classic Locality

Description Tabs

Description
Locality: 
Vouves, Limenaria, Thasos Island, East Macedonia and Thrace, Greece
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 1.2 × 1 cm
Description

Yellowish crystals of the extremely rare mineral feinglosite associated to also yellowish helmutwinklerite, both minerals typical of Tsumeb, but in this case from a locality in Greece, both in a matrix of adamine and also associated to arsendescloizite.

Specimen analyzed by SEM/EDS, see copy of the analysis enclosed.

Mineral Data
What's on the rock

Feinglosite

Formula: 
Pb2Zn(AsO4)2·H2O
Strunz: 
8.BG.05
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

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
Labels
Label Images - only: Feinglosite & Helmutwinklerite

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