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Andradite & Adularia

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AST843827

Andradite & Adularia

New Discovery

Description Tabs

Description
Locality: 
Kimmeria, Xanthi, East Macedonia and Thrace, Greece
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 2.5 cm
Description

A rare and possibly unique for Greece case of two generation andradite-grossular garnet. First generation (green) is covered by second (light olive green) with separation surfaces between two generations being extremely distinct. A sharp whitish adularia is also present.

Specimen is from a new small find of such crystals at Kimmeria.

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

Adularia

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

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