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Tourmaline Quartz

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MGR557728

Tourmaline Quartz

Description Tabs

Description
Locality: 
Pederneira Mine, São José da Safira, Minas Gerais, Brazil
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 3.7 × 2.7 cm
Description

Waterclear, sharp terminated and highly lustrous quartz crystals form a floater. Intergrown to this nice assemble you can see several dark green tourmaline crystals, which are all very glossy. Hard to photograph, much better in person.

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