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Metatyuyamunite & Bokite

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BCK740357

Metatyuyamunite & Bokite

Don Owens collection
Rare Mineral

Description Tabs

Description
Locality: 
Union Carbide Mine, Wilson Springs, Garland County, Arkansas, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 2.4 × 2.3 cm
Description

You are bidding on a small sample with some patches of tiny sprays of yellow metatyuyamunite crystals on black, fibrous bokite and tabular straczekite from the Union Carbide Mine. Extremely rare occurence at the mine and few samples are known. Collected by Don Owens, mine geologist at the locality for 30 years, and from his collection. 

Mineral Data
What's on the rock

Metatyuyamunite

Formula: 
Ca(UO2)2(VO4)2·3-5H2O
Strunz: 
4.HB.25
Hardness: 
2.0
Streak: 
Yellow
Type Locality: 
Shiprock District, San Juan Co., New Mexico, USA

Bokite

Formula: 
(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20·7.4H2O
Strunz: 
4.HE.20
Hardness: 
3.0
Colour: 
Black
Type Locality: 
Balasauskandyk V Deposit, Karatau Range, Southern Kazakhstan Province (Ongtüstik Qazaqstan Oblysy; Yuzhno-Kazakhstanskaya Oblast'), Kazakhstan...

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