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Tourmaline & Albite

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ESM626896

Tourmaline & Albite

Description Tabs

Description
Locality: 
Pederneira Mine, São José da Safira, Minas Gerais, Brazil
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2.7 × 1.5 cm
Description

Lustrous olive-green tourmaline crystal with minor albite blades

Mineral Data
What's on the rock

Tourmaline

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

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden