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Spinel & Uralite

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CLB90090

Spinel & Uralite

Pseudomorph

Description Tabs

Description
Locality: 
Monzoni Mountains, Trento Province, Trentino-Alto Adige, Italy
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.8 × 8 × 5.3 cm
Description

Very interesting specimen. Massive uralite seems to have replaced all the fassaite.

Some black spinel  var pleonaste, crystals grew on those pseudomorphs.

The matrix also contains very little magnetite.

Mineral Data
What's on the rock

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
7.5 - 8.0

Uralite

Variety Of: 

Amphibole Supergroup

Formula: 
AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hardness: 
0.0
Hardness: 
0.0

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