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Kazakhstanite & Cacoxenite

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BCK716307

Kazakhstanite & Cacoxenite

Martin Jensen collection ILLUSTRATED SPECIMEN
Rare Mineral

Description Tabs

Description
Locality: 
Gold Quarry Mine, Maggie Creek, Eureka County, Nevada, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.8 × 1.4 cm
Description

You are bidding on a world class sample of kazakhstanite from the Gold Quarry from the Martin Jensen collection with exceptional radial sprays of individual, sharp crystals in lustrous aggregates on matrix with cacoxenite and minor strengite. This specimen was illustrated in the Mineralogical Record V26 p.460 in the article written by Martin Jensen on the Gold Quarry Mine. This is an exceptional sample for the species and may be one of the best samples extant. 

Mineral Data
What's on the rock

Kazakhstanite

Formula: 
Fe3+5V4+3V5+12O39(OH)9·9H2O
Strunz: 
8.CB.45
Hardness: 
2.5
Type Locality: 
Balasauskandyk V Deposit, Karatau Range, Southern Kazakhstan Province (Ongtüstik Qazaqstan Oblysy; Yuzhno-Kazakhstanskaya Oblast'), Kazakhstan...

Cacoxenite

Formula: 
Fe3+24Al(PO4)17O6(OH)12·17H2O
Strunz: 
8.DC.40
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

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