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Quartz With Tourmaline

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BMM830322

Quartz With Tourmaline

Description Tabs

Description
Locality: 
Ali Abad, Hunza Valley, Hunza District, Gilgit-Baltistan, Pakistan
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 7 × 3.5 cm
Description

This piece consists of an approx. 1.5 cm thick quartz plate that has crystallized on both sides. One side is covered with high-gloss, transparent quartz crystals. Between the quartz crystals there are aggregates with multiple terminations of transparent brown-green tourmalines. The largest aggregate is in the middle of the specimen and measures 3.5 cm. There are also innumerable thin needles of transparent green tourmaline between the quartz crystals. On the other side, the quartz crystals are smaller. In between there are also transparent tourmalines with multiple terminations.

Mineral Data
What's on the rock

Quartz

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

Tourmaline

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