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Tourmaline Var Dravite

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CLB188381

Tourmaline Var Dravite

Description Tabs

Description
Locality: 
Anjanabonoina, Ambohimanambola, Betafo, Vakinankaratra, Madagascar
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.3 × 1.2 cm
Description

Cluster of short dravite crystal tips. Lustrous, honey-colored and translucent with golden sparkles. Very unusual.

Mineral Data
What's on the rock

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7

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

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