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Straczekite With Duttonite & Fervanite

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BFM871882

Straczekite With Duttonite & Fervanite

Description Tabs

Description
Locality: 
Union Carbide Mine, Wilson Springs, Garland County, Arkansas, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.1 × 6.4 × 5.1 cm
Description

Black Straczekite crystals associated with yellow Duttonite and Fervanite from the type locality from straczekite.

Previous labels supplied (not photographed)
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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Seller's terms and conditions

Terms & Conditions
Thank you for your interest in my offers!

Payment is possible via Paypal or cash if you pick up the item(s) personally.

If you have any questions please feel free to contact me.

Best regards Matthias