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Magnesite Var Breunnerite

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CR31196

Magnesite Var Breunnerite

Description Tabs

Description
Locality: 
Pfitsch Pass, Schwaz District, Tyrol, Austria
Size Range: 
Museum (18cm plus)
Size: 
19 × 11 × 4 cm
Largest Crystal: 
3.00cm
Description

Large brown crystals of Ferroan Magnesite from an old collection.

Very good display specimen.

Mineral Data
What's on the rock

Magnesite

Formula: 
MgCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White
Type Locality: 
Magnisía Prefecture (Magnesia), Thessalia Department (Thessaly), Greece

Breunnerite

Variety Of: 

Ferroan Magnesite

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