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Prehnite With Epidote

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QRI868163

Prehnite With Epidote

Former collection Kasper (CH)
Classic Locality

Description Tabs

Description
Locality: 
Calanda, Chur Region, Grisons, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.6 × 4.8 × 4.4 cm
Largest Crystal: 
0.30cm
Weight: 
259.00gr
Description

Elegant elongated matrix specimen featuring numerous individuals of pale green prehnite crystals associated to dark green bowties of epidote.

Quite pleasant, rich and representative from the area. From the former Kasper collection (CH), the specimen dates to pre-'70s times. Hard to find with such richness nowadays.

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

Epidote

Formula: 
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05a
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
Colorless
Type Locality: 
Bourg d'Oisans, Isère, Rhône-Alpes, France...

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