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Epidote Prehnite Adularia & Scolecite

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ESM838827

Epidote Prehnite Adularia & Scolecite

Description Tabs

Description
Locality: 
Gneiss Quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
15 × 6 × 5 cm
Description

Pale green prehnite, olive-green epidote, adular crystals with a spray of scolecite needles (sawed base)  ( For original close-up photo contact us )

Mineral Data
What's on the rock

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...

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

Adularia

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic
Hardness: 
6 Ortho - clase

Scolecite

Formula: 
CaAl2Si3O10·3H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
white