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Kazakhstanite & Fervanite

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UVM683881

Kazakhstanite & Fervanite

Classic Locality

Description Tabs

Description
Locality: 
Gold Quarry Mine, Maggie Creek, Eureka County, Nevada, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.8 × 2.1 cm
Description

A black crust of Kazakhstanite balls with an overgrowth of yellow fervanite and/or tyuyamunite.   A rich sample of this rare species that hasn't been found at Gold Quarry for many years.

Mineral Data
What's on the rock

Kazakhstanite

Formula: 
Fe3+5V4+3V5+12O39(OH)9·9H2O
Strunz: 
8.CB.45
Hardness: 
2.5
Type Locality: 
Balasauskandyk V Deposit, Karatau Range, Southern Kazakhstan Province (Ongtüstik Qazaqstan Oblysy; Yuzhno-Kazakhstanskaya Oblast'), Kazakhstan...

Fervanite

Formula: 
Fe3+4V5+4O16·5H2O
Strunz: 
4.HG.05
Hardness: 
0.0
Type Locality: 
Polar Mesa, Polar Mesa District (Polar Mesa), Grand Co., Utah, USA

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