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Adamite Psm Smithsonite

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PFK789596

Adamite Psm Smithsonite

Classic Locality

Description Tabs

Description
Locality: 
Kamariza Mines, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
16.6 × 13.8 × 2.7 cm
Description

This is a very large example of this unique encrustation pseudomorph of adamite after smithsonite. The botryoidal shape of this cast is due to the botryoidal smithsonite that used to be the base for the adamites to grow. The smithsonite is now gone so the adamite crust remains!
 

ex Konstantinos Papaspyropoulos collection.

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

Smithsonite

Formula: 
ZnCO3
Strunz: 
5.AB.05
Hardness: 
4.0 - 4.5
Streak: 
White

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