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Epidote & Prehnite

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CR639194

Epidote & Prehnite

Description Tabs

Description
Locality: 
Djouga-Kolon, Bendougou, Bafoulabé Circle, Kayes Region, Mali
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 5.3 × 3.5 cm
Description

From the finds of this combination in Mali, here is a unique and elegant specimen.

A large, well-terminated epidote crystal is framed by the back sides of balls of pale green prehnite that cover the back of the crystal.

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