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Pyrrhotite & Calcite

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SER978239

Pyrrhotite & Calcite

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Description
Locality: 
Morro Velho Mine, Nova Lima, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10.1 × 7.1 × 7.1 cm
Description

a large cabinet size specimen featuring hundreds of white to trasparent crystals of calcite with numerous golden pyrrothite crystals

Mineral Data
What's on the rock

Pyrrhotite

Formula: 
Fe1-xS (x = 0 to 0.17)
Strunz: 
2.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Current price

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10
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Start 21 May 18:00
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