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Polybasite

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PJM217480

Polybasite

Description Tabs

Description
Locality: 
San Juan de Rayas Mine, Guanajuato, Guanajuato Municipality, Guerrero, Mexico
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.2 × 0.6 cm
Description

 A group of parallel growing bladed polybasite crystals, with  a lustrous metallic silvery black colour and some fine druzy calcite on one side of the group

Mineral Data
What's on the rock

Polybasite

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

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All goods must be paid for prior to shipping, all bids are binding.