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Goshenite On Muscovite Psm Orthoclase

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PCZ751740

Goshenite On Muscovite Psm Orthoclase

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 2 × 1.5 cm
Description

A sharp, well terminated tourmaline (var. goshenite) crystal on a muscovite epimorph of orthoclase. An unusual specimen from a classic locality.

Mineral Data
What's on the rock

Goshenite

Variety Of: 

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Hardness: 
7.5 - 8.0
Hardness: 
0.0

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Orthoclase

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0
Streak: 
White
Peter Crozier Minerals