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Annabergite Calcite Gaspéite & Cabrerite

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AST152962

Annabergite Calcite Gaspéite & Cabrerite

Description Tabs

Description
Locality: 
Km-3 Mine, Lavrion District, Attiki Prefecture, Greece
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4 × 2.5 cm
Description

Cavity filled with dark green annabergite crystals on scalenoedral calcite (partly colored yellow by gaspeite inclusions) and vegetable green cabrerite microcrystals (radiating acicular groups) on the left side of the cavity.Cabrerite is the Mg rich variety of annabergite.

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

Calcite

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

Gaspéite

Formula: 
(Ni,Mg,Fe)CO3
Strunz: 
5.AB.05
Hardness: 
4.5 - 5.0
Type Locality: 
New Jersey Zinc Exploration Co. trench, Mont-Albert, La Haute-Gaspésie RCM, Gaspésie-Îles-de-la-Madeleine, Québec, Canada

Cabrerite

Synonym Of: 

Magnesian Annabergite

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

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