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Guérinite & Native Arsenic

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AST190661

Guérinite & Native Arsenic

Rare Mineral

Description Tabs

Description
Locality: 
Adami #2 Mine, Plaka, Lavrion District, Attiki Prefecture, Greece
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 3.5 cm
Description

Acicular guerinite crystals in cavity with magnesium rich calcite crystals. Other minerals on specimen are native arsenic, galena, Ag-tetraedrite, sphalerite and proustite.Specimen is SEM analysed.

Mineral Data
What's on the rock

Guérinite

Formula: 
Ca5(AsO4)2(HAsO4)2·9H2O
Strunz: 
8.CJ.75
Crystal System: 
Monoclinic
Hardness: 
1.5
Colour: 
Colorless
Streak: 
White
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Arsenic

Formula: 
As
Strunz: 
1.CA.05
Crystal System: 
Trigonal
Hardness: 
3.5
Streak: 
Grey

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