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Proustite & Polybasite

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BCK651481

Proustite & Polybasite

Classic Locality

Description Tabs

Description
Locality: 
O'Brien Mine, Cobalt, Ontario, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.4 × 1.8 cm
Description

You are bidding on a small sample with a quite large and very nice cluster of twinned proustite crystals on matrix with some discs of polybasite, calcite and cobaltite. 

Mineral Data
What's on the rock

Proustite

Formula: 
Ag3AsS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal
Hardness: 
2.0 - 2.5

Polybasite

Formula: 
[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Strunz: 
2.GB.15
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.5 - 3.0
Streak: 
black

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

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