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Bismuthinite Marcasite & Bismoclite

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SCH38626

Bismuthinite Marcasite & Bismoclite

Description Tabs

Description
Locality: 
Tazna, Cerro Tazna, Atocha-Quechisla, Nor Chichas Province, Potosi Department, Bolivia
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 2.1 × 2.6 cm
Description

Beautiful twinned bismuthinite crystals, most encrusted with shiny marcasite are set on a matrix, associated with many, tiny bismoclite crystal sprays. 

Rare!

Mineral Data
What's on the rock

Bismuthinite

Formula: 
Bi2S3
Strunz: 
2.DB.05
Hardness: 
2.0 - 2.5
Streak: 
Lead-gray

Marcasite

Formula: 
FeS2
Strunz: 
2.EB.10a
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5

Bismoclite

Formula: 
(BiO)Cl
Strunz: 
3.DC.25
Hardness: 
2.0 - 2.5
Type Locality: 
Jakkalswater (Jackal's Water; Noumas I pegmatite; Blesberg mine), Steinkopf, Namakwa District (Namaqualand), Northern Cape Province, South Africa...
schani

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