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Pokrovskite & Sjögrenite

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JYJ507311

Pokrovskite & Sjögrenite

Description Tabs

Description
Locality: 
Lytton, Sonoma County, California, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 1.8 × 1.5 cm
Description

Pokrovskite & sjögrenite on matrix. 

Mineral Data
What's on the rock

Pokrovskite

Formula: 
Mg2(CO3)(OH)2
Strunz: 
5.BA.10
Hardness: 
3.0
Type Locality: 
Dunite lens, Zlatogorsk ultramafic intrusion, Zlatogorsk, Northern Kazakhstan Province (Soltüstik Qazaqstan Oblysy; Severo-Kazakhstanskaya Oblast'), Kazakhstan...

Sjögrenite

Synonym Of: 

Pyroaurite-2H

Formula: 
Mg6Fe3+2(CO3)(OH)16·4H2O
Strunz: 
5.DA.45
Hardness: 
2.5