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Prehnite

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MCH559534

Prehnite

Description Tabs

Description
Locality: 
Åmotsdalen, Oppdal, Trøndelag, Norway
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 1.5 × 1.4 cm
Description

A pretty, green coloured „prehnite ball“, 0.9 cm in diameter, is set on a matrix of dark grey schist with some nice developped albite crystals. A specimen from a remote locality in a mountainous area in central Norway.

Mineral Data
What's on the rock

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

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