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Prehnite

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CR703886

Prehnite

Classic Locality

Description Tabs

Description
Locality: 
Muotta Naira, Piz Lai Blau, Tujetsch, Surselva Region, Grisons, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 5 × 4 cm
Description

This is a beautiful old prehnite specimen from Switzerland. It comes from the University collection of Hamburg, Germany and was collected in the 1930s.

Beautiful sharp and sculptural prehnite crystals on minor matrix.

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