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Dzharkenite & Cobaltomenite

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JYJ959326

Dzharkenite & Cobaltomenite

Description Tabs

Description
Locality: 
Cactus Rat Mine, The Poison Strip, Grand County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3 × 2.8 cm
Description

Octahedral dzharkenite associated with ferroselite in sandstone matrix and pink cobaltomenite on sandstone matrix. 

SEM-EDS no MA1519. 

Mineral Data
What's on the rock

Dzharkenite

Formula: 
FeSe2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
5.0
Type Locality: 
Suluchekinskoye Se-U deposit, Dzharkenskaya Depression, Middle Ili River, Almaty Province (Almaty Oblysy; Almati Oblast'), Kazakhstan...

Cobaltomenite

Formula: 
CoSeO3·2H2O
Strunz: 
4.JH.10
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Streak: 
dark pink
Type Locality: 
Cerro de Cacheuta, Sierra de Cacheuta, Mendoza, Argentina