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Orpiment Realgar & Arsenic

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SER1008226

Orpiment Realgar & Arsenic

Description Tabs

Description
Locality: 
Mardzhan deposit, Sisian, Syunik Province, Armenia
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 5.2 × 5.2 cm
Description

sprays of yellow orpiment with spots of red realgar and intrusion of native arsenic

Mineral Data
What's on the rock

Orpiment

Formula: 
As2S3
Strunz: 
2.FA.30
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0

Realgar

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

Arsenic

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