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Dufrénoysite Rutile Sphalerite & Realgar

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SER1020968

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Description
Locality: 
Lengenbach Quarry, Binntal, Valais, Switzerland
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 2.6 × 2.1 cm
Description

needels of metallic dufrenoysite on  dolomite with some dark red rutile, a yellow sphalerite and red realgar ; truly a rich specimen indeed

Mineral Data
What's on the rock

Dufrénoysite

Formula: 
Pb2As2S5
Strunz: 
2.HC.05d
Crystal System: 
Monoclinic
Hardness: 
3.0
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

Rutile

Formula: 
TiO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal - Ditetragonal Dipyramidal
Hardness: 
6.0 - 6.5
Type Locality: 
Rutile locality, Horcajuelo de la Sierra, Madrid, Spain

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Realgar

Formula: 
As4S4
Strunz: 
2.FA.15a
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0

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