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Heliodor Columbite & Muscovite

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CLB100871

Heliodor Columbite & Muscovite

Classic Locality

Description Tabs

Description
Locality: 
Lauvland #4 Quarry, Evje og Hornnes, Agder, Norway
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.1 × 6.4 × 3.5 cm
Largest Crystal: 
4.20cm
Description

Two yellow heliodor (beryl-variety) crystals - the largest 4.2 cm - with bronce-colored muscovite and black columbite on feldspar.

Mineral Data
What's on the rock

Heliodor

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

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