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Ferroan Magnesite Var Breunnerite

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LGM64381

Ferroan Magnesite Var Breunnerite

Ex Dr. Schwartz, Bonn, Germany

Description Tabs

Description
Locality: 
Hall, Innsbruck, Inn valley, Tyrol, Austria
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 4.5 × 3 cm
Largest Crystal: 
1.80cm
Description

Blackish rhombohedral breunnerite (a synonym of ferromagnesite or german "Mesitinspat") crystals in-grown in a granular matrix. Breunnerite is an iron-containing magnesite, the iron portion of these crystals is quite high, so the crystals are black and intransparent.
Weight: 38 grams

Mineral Data
What's on the rock

Ferroan Magnesite

Variety Of: 

Magnesite

Formula: 
MgCO3
Strunz: 
5.AB.05
Hardness: 
3.5 - 4.5
Formula: 
(Mg,Fe)CO3
Hardness: 
0.0

Breunnerite

Variety Of: 

Ferroan Magnesite

Formula: 
(Mg,Fe)CO3
Hardness: 
0.0
Formula: 
(Mg,Fe)CO3
Hardness: 
0.0

Seller Information

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