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Helvine

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KRM661433

Helvine

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Description
Locality: 
Thor Ghar, Zagi Mountain, Federally Administered Tribal Areas, Pakistan
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 2.6 × 1.2 cm
Largest Crystal: 
1.60cm
Description

A very rare gemmy well doubly terminated helvine crystal measure 1.5cm plus hosts to matrix , no damage , nice specimen , very hard to find.

Mineral Data
What's on the rock

Helvine

Formula: 
Mn2+4(Be3Si3O12)S
Strunz: 
9.FB.10
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Friedefürst Mine, Breitenbrunn, Breitenbrunn District, Erzgebirge, Saxony, Germany

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