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Tourmaline Var Buergerite

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TWH584133

Tourmaline Var Buergerite

Type Locality

Description Tabs

Description
Locality: 
Mexquitic de Carmona Municipality, San Luis Potosi, Mexico
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.2 × 0.7 cm
Largest Crystal: 
0.90cm
Description

brownish color on faces with golden internal flecks are the remarks of this rare saught-after tourmaline group currently only from Mexquitic, Mexico for over 40 years since first discovered.

Mineral Data
What's on the rock

Tourmaline

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

Buergerite

Formula: 
Na(Fe33+)Al6(Si6O18)(BO3)3O3(OH)
Group Parent: 
Tourmaline
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