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Annabergite Cabrerite & Calcite

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AST578736

Annabergite Cabrerite & Calcite

Description Tabs

Description
Locality: 
Km-3 Mine, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 2.5 × 3 cm
Description

Well shaped and sharp intense green annabergite crystals form aggregates that richly cover matrix cavity along with neon green cabrerite (rare Mg annabergite variety) and semi transparent scalenoedral calcite.Very rich specimen from an old find back in 2005 and of great interest as combination specimens of annabergite with cabrerite are limited in number and impossible to find at locality nowdays.

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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