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Allargentum & Arsenopyrite

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PDM617975

Allargentum & Arsenopyrite

Description Tabs

Description
Locality: 
Bouismas Mine, Zagora Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.7 × 1.6 cm
Description

Arborescent growth of dull grey allargentum filling a crack with white calcite. The quartz rich matrix is also spotted with highly lustrous grey crystals of arsenopyrite. Minor tiny silver patches are also present. Specimen found in 09/2009.

Mineral Data
What's on the rock

Allargentum

Formula: 
(Ag1-xSbx)
Strunz: 
2.AA.30
Crystal System: 
Hexagonal
Hardness: 
3.5
Colour: 
Silver
Type Locality: 
University Mine (Giroux Lake Mine), Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

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