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Dzharkenite & Ferroselite

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JYJ814258

Dzharkenite & Ferroselite

Description Tabs

Description
Locality: 
Cactus Rat Mine, The Poison Strip, Grand County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.3 × 1.6 cm
Description

Several inclusions including octhahedral dzharkenite, partly coated by an unknown red selenate/selenite mineral and elongated yellow metallic ferroselite. Very rich.

SEM-EDS confirmed. 

 

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...

Ferroselite

Formula: 
FeSe2
Strunz: 
2.EB.10a
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5
Streak: 
Black
Type Locality: 
Ust' Uyok deposit (Ust'-Uyuk), Turan District, Tuva Republic, Eastern-Siberian Region, Russia...
Analysis
Analysis Report - only: Dzharkenite & Ferroselite