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Tourmaline With Quartz

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QRI945569

Tourmaline With Quartz

Classic Locality

Description Tabs

Description
Locality: 
Ahrntal, Bolzano Province, South Tyrol, Trentino-Alto Adige, Italy
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.3 × 5.5 × 4.6 cm
Largest Crystal: 
0.70cm
Weight: 
188.00gr
Description

Small cabinet consisting of several dark brown tourmalines, possibly dravite, beautifully populating a pale matrix.
As contrastful at it gets, this is a very rich specimen from the locality.

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

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