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Prehnite

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WND539448

Prehnite

Description Tabs

Description
Locality: 
Lake Nero, Maggia Valley, Ticino, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
6.1 × 7.8 × 2.3 cm
Largest Crystal: 
0.70cm
Description

Rich greyish, lustrous prehnite crystals up to 0.7 cm across on matrix covering the entire surface of the specimen from Lago Nero, Tessin, Switzerland. Crystals are well terminated and show no visible damage. A nice prehnite specimen from an unusual locality in the Swiss Alps.

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
Wendel Minerals

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