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Augite & Epidote

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ESM805969

Augite & Epidote

Description Tabs

Description
Locality: 
Söllnkar, Krimmler Ache Valley, Hohe Tauern, Salzburg, Austria
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 1.5 × 1.5 cm
Description

Greenish black augite crystals with olive green epidote crystals and minor hair like byssolite on matrix

Mineral Data
What's on the rock

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

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...