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Annabergite Cabrerite & Calcite

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AST547065

Annabergite Cabrerite & Calcite

Description Tabs

Description
Locality: 
Km-3 Mine, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3 × 5 × 2 cm
Description

Matrix cavity filled with intense green sharp annabergite crystals with neon green botryoidal aggregates of cabrerite (rare Mg rich annabergite variety) all set on rhomboedral calcite.These combination specimens come from an old find and are very hard to get.

Mineral Data
What's on the rock

Annabergite

Formula: 
Ni3(AsO4)2·8H2O
Strunz: 
8.CE.40
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.5
Type Locality: 
Teichgräber Flacher vein, Teichgräber deep adit, Kippenhain Mine (Kippenhayn Mine), Schreckenberg, Frohnau, Annaberg-Buchholz, Annaberg District, Erzgebirge, Saxony, Germany

Cabrerite

Synonym Of: 

Magnesian Annabergite

Formula: 
(Ni,Mg)3(AsO4)2·8H2O
Hardness: 
0.0

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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