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Posnjakite

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SMM585648

Posnjakite

Description Tabs

Description
Locality: 
Baccu Locci Mine, Villaputzu, Cagliari Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.5 × 2 cm
Description

Many, nice, small, electric blue hexagonal-prismatic crystals, of posnjakite, together with beautiful colorless, glassy, highly transparent crystals of hemimorphite above a golden yellow matrix.

Boxed with Label
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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