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Dolomite Psm Aragonite

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TBM871043

Dolomite Psm Aragonite

Description Tabs

Description
Locality: 
Iano, Montaione, Florence Province, Tuscany, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 6.5 × 1.5 cm
Weight: 
68.00gr
Description

Very rare and particular sample of pseudomorphosis of Dolomite after Aragonite crystals up to 20 mm long, mineralized into serpentinite rocks.

Mineral Data
What's on the rock

Dolomite

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

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain