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Prehnite

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MCH571770

Prehnite

Description Tabs

Description
Locality: 
Åmotsdalen, Oppdal, Trøndelag, Norway
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.1 × 5.7 × 2.9 cm
Description

Two pretty, green coloured „prehnite balls“, 1.2 cm and 1.0 cm in diameter, are set on a matrix of dark grey schist with numerous 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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