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Andradite Epidote & Quartz

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PFK660023

Andradite Epidote & Quartz

Description Tabs

Description
Locality: 
Kimmeria, Xanthi, East Macedonia and Thrace, Greece
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 3.5 × 1.7 cm
Description

Unusual andradite crystals with stepped faces and skeletal-like form. On some areas, only the faces of the crystals remain and the interior has been replaced with epidote and quartz. I had the luck of finding these unusual garnets in the locality myself, in 2010.

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...

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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