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Tourmaline With Albite

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BMM966913

Tourmaline With Albite

Description Tabs

Description
Locality: 
Stak Nala, Gilgit-Baltistan, Pakistan
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 2.7 × 2.6 cm
Description

A group of tourmaline crystals between albite. The tourmalines show shiny faces all around with good stripes. The termination ends in a light green area. All photos in natural daylight. One crystal is broken.

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