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Väyrynenite With Hydroxylherderite Topaz & Tourmaline

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KRM186960

Väyrynenite With Hydroxylherderite Topaz & Tourmaline

Description Tabs

Description
Locality: 
Nyet Bruk, Braldu Valley, Skardu, Gilgit-Baltistan, Pakistan
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 6.2 × 3.5 cm
Description

 An interesting nice combination specimen of small hydroxylherderite , well doubly terminated topaz and minor stain coated varrynenite crystals  hosts to dark black greenish tourmaline.

Undamaged perfect specimen

 

Mineral Data
What's on the rock

Väyrynenite

Formula: 
Mn2+Be(PO4)(OH,F)
Strunz: 
8.BA.05
Hardness: 
5.0
Streak: 
White
Type Locality: 
Viitaniemi pegmatite, Eräjärvi area, Orivesi, Western and Inner Finland Region, Finland

Hydroxylherderite

Formula: 
CaBe(PO4)(OH,F)
Strunz: 
8.BA.10
Crystal System: 
Monoclinic
Hardness: 
5.0 - 5.5
Streak: 
white

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

Tourmaline

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