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Pyrrhotite & Galena

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ESM1064141

Pyrrhotite & Galena

Description Tabs

Description
Locality: 
Naica, Saucillo Municipality, Chihuahua, Mexico
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 4 × 3 cm
Description

A lustrous brassy pyrrhotite crystal hosting grey metallic galena 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

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey