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Mikehowardite & Bokite

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BCK1085353

Mikehowardite & Bokite

New Mineral type

Description Tabs

Description
Locality: 
North Wilson Pit, 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: 
3.2 × 2.1 × 1.3 cm
Description

You are bidding on a rich, and probably the best, mikehowardite sample that I have offered. Rich, black crystals of mikehowardite are liberally sprinkled over the surface of very nice sprays of bokite needles. From the holotype material collected by Don Owens in 1983. Fantastic and rich example of this species. 

Mineral Data
What's on the rock

Mikehowardite

Formula: 
Fe3+4(V5+O4)4(H2O)2 · H2O
Crystal System: 
Triclinic
Type Locality: 
North Wilson Pit, Union Carbide Mine, Wilson Springs, Garland County, Arkansas, United States of America

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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