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Posnjakite

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CHP862244

Posnjakite

Classic Locality

Description Tabs

Description
Locality: 
Torgal Mine, São Luís, Odemira, Beja District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.8 × 1.7 cm
Description

specimen with many azure-greenish crystals of posnjakite on matrix with associate azure linarite.

the specimen come from the personal collection of Pedro Alves.

c. 2444

Mineral Data
What's on the rock

Posnjakite

Formula: 
Cu4(SO4)(OH)6·H2O
Strunz: 
7.DD.10
Crystal System: 
Monoclinic
Hardness: 
2.0 - 3.0
Type Locality: 
Nura-Taldy W deposit, Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan...

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