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Tourmaline Quartz & Cleavelandite

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ESM816194

Tourmaline Quartz & Cleavelandite

Description Tabs

Description
Locality: 
Sapo Mine, Goiabeira, Minas Gerais, Brazil
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
17 × 9 × 12 cm
Description

A dark tourmaline crystal covered with creme colored cleavelandite crystals on a milky quartz crystal

Mineral Data
What's on the rock

Tourmaline

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Cleavelandite

Variety Of: 

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Hardness: 
6.0 - 6.5
Hardness: 
0.0