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Adamite & Ankerite

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KFT122992

Adamite & Ankerite

Description Tabs

Description
Locality: 
Lavrion District Mines, Attiki Prefecture, Greece
Size Range: 
Cabinet (10-18 cm)
Size: 
10.3 × 6.1 × 3.5 cm
Description

A fine specimen with only minor chipping in a very good quality. Scalenohedral calcite crystals some with a white layer and between the calcite intensive green adamite.

Mineral Data
What's on the rock

Adamite

Formula: 
Zn2(AsO4)(OH)
Strunz: 
8.BB.30
Crystal System: 
Orthorhombic
Hardness: 
3.5
Streak: 
white
Type Locality: 
Chañarcillo, Copiapó Province, Atacama Region, Chile

Ankerite

Formula: 
Ca(Fe2+,Mg)(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Styrian Erzberg, Eisenerz, Styria, Austria