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Polybasite & Pyrargyrite

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SCH31470

Polybasite & Pyrargyrite

Description Tabs

Description
Locality: 
Julcani Mine, Julcani, Angaraes Province, Huancavelica Department, Peru
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4.4 × 3.2 cm
Description

Lustrous, sharp polybasite crystals to just under 2mm scattered over the matrix with some pyrargyrite crystal (the biggest is about 3mm).

Nice Peruvian combo!

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

Pyrargyrite

Formula: 
Ag3SbS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal - Ditrigonal Pyramidal
Hardness: 
2.5
schani

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