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Straczekite Duttonite & Fervanite

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CLB133663

Straczekite Duttonite & Fervanite

Rare Mineral

Description Tabs

Description
Locality: 
Union Carbide Mine, Wilson Springs, Garland County, Arkansas, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.6 × 0.4 cm
Description

Green-black straczekite (type locality), pale brown duttonite and yellowish fervanite. Except for the straczekite too small for photographing the details well.

Mineral Data
What's on the rock

Straczekite

Formula: 
(Ca,K,Ba)(V5+,V4+)8O20·3H2O
Strunz: 
4.HE.20
Hardness: 
1.0 - 2.0
Type Locality: 
North Wilson pit, Union Carbide Mine, Wilson Springs (Potash Sulfur Springs), Garland Co., Arkansas, USA

Duttonite

Formula: 
V4+O(OH)2
Strunz: 
4.HE.35
Hardness: 
2.5 - 0.0
Type Locality: 
Peanut Mine, Bull Canyon, Uravan District, Montrose Co., Colorado, USA

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

Seller Information

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