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Smithsonite Psm Gypsum

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PFK786628

Smithsonite Psm Gypsum

Classic Locality

Description Tabs

Description
Locality: 
Jean Baptiste Mine, Kamariza, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 1.1 × 0.6 cm
Description

Here is an interesting and unusual specimne from the Jean Baptiste mine. A single crystal of gypsum was partly covered with smithsonite and then dissolved, leaving a cast of smithsonite that retained the shape!
 

Mineral Data
What's on the rock

Smithsonite

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

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.

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