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Prehnite

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CR844767

Prehnite

Description Tabs

Description
Locality: 
Muotta Naira, Piz Lai Blau, Tujetsch, Surselva Region, Grisons, Switzerland
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5.7 × 3.8 cm
Description

This is a beautiful and old Prehnite specimen from Switzerland. 

The crystals are gemmy with exceptional shape and luster.

Ex Wolfgang Schneider collection.

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