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Pyrrhotite & Dolomite

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SCH27072

Pyrrhotite & Dolomite

Ex Eugene G Tribbey

Description Tabs

Description
Locality: 
Morro Velho Mine, Nova Lima, Minas Gerais, Brazil
Size Range: 
Small cabinet (7-10 cm)
Size: 
3.2 × 7.6 × 5.3 cm
Description

Colorless translucent dolomite crystals with scattered pyrrhotite crystals up to 5mm. All crystals are undamaged.

This is an old specimen that was adquired by Mr. Tribbey in 1976.

Comes with several prior labels. This a very good one!

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

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White
schani

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