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Prehnite & Actinolite

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SCH110795

Prehnite & Actinolite

Description Tabs

Description
Locality: 
Saint Christophe-en-Oisans, Bourg d'Oisans, Isère, Auvergne-Rhône-Alpes, France
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.4 × 1.9 cm
Description

Lustrous dark green curved prehnite crystals of high quality of sharpness and aesthetics richly over 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

Actinolite

Formula: 
☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Strunz: 
9.DE.10
Crystal System: 
Monoclinic - Prismatic
Hardness: 
5.0 - 6.0
Streak: 
White
schani

Seller Information

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