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Dravite

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ESM807645

Dravite

Description Tabs

Description
Locality: 
Brumado, Bahia, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 2 × 2 cm
Description

A cluster of lustrous parallel grown dark olive green dravite crystals

Mineral Data
What's on the rock

Dravite

Formula: 
Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Crystal System: 
Trigonal
Hardness: 
7.0
Type Locality: 
Dobrova, Dravograd (Unterdrauburg), Slovenia