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Andradite Epidote & Biotite

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PFK629759

Andradite Epidote & Biotite

Description Tabs

Description
Locality: 
Marki Khel, Khogyani District, Nangarhar Province, Afghanistan
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.4 × 1.6 cm
Description

A main, large, lustrous and sharp, dodecahedral crystal of brown andradite with minor gemmy crystals of green diopside and crystals of biotite. No damage, only contacted at the periphery.

Mineral Data
What's on the rock

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway

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...

Biotite

Group Parent: 
Mica Group

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Shipping Information

Postage Area Price
Greece
5
Europe
12
Rest of the World
14