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Duttonite Straczekite & Francevillite

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BCK572405

Duttonite Straczekite & Francevillite

Rare Mineral

Description Tabs

Description
Locality: 
Pandora Mine, La Sal, San Juan County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.2 × 1 cm
Description

You are bidding on a small specimen with a crust of minute brown duttonite crystals, black straczekite blades and clusters of yellow francevilleite. Former Fred DeVito collection. 

Mineral Data
What's on the rock

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

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

Francevillite

Formula: 
(Ba,Pb)(UO2)2(VO4)2·5H2O
Strunz: 
4.HB.15
Hardness: 
3.0
Type Locality: 
Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon

Seller Information

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