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Prehnite & Byssolite

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SER869910

Prehnite & Byssolite

Description Tabs

Description
Locality: 
La Combe de la Selle, Saint Christophe-en-Oisans, Le Bourg-d'Oisans, Isère, Auvergne-Rhône-Alpes, France
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.1 × 1.1 cm
Largest Crystal: 
1.60cm
Description

a wonderful apple green crystal of prehnite on matrix with green tufts of bissolite

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

Byssolite

Variety Of: 

Amphibole Supergroup

Formula: 
AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hardness: 
0.0
Hardness: 
0.0