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Tourmaline Var Dravite

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GND25329

Description Tabs

Description
Locality: 
Yinnietharra, Upper Gascoyne Shire, Western Australia, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5 × 3.2 cm
Description

Nice example of this dravite locality.

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
Gondwana Minerals