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Shinkolobweite & Wyartite

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UVM1085142

Shinkolobweite & Wyartite

Radioactive

Description Tabs

Description
Locality: 
Shinkolobwe Mine, Shinkolobwe, Kambove, Haut-Katanga, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1.6 cm
Description

An exceptional specimen of shinkolobweite and wyartite that seems to redefine what the species can muster in terms of crystal form and intensity of color.   This thumbnail exemplifies the best of what is possible of the specimens from this lot, as described below.

These specimens were from a large specimen of wyartite and "kasolite" from the Rock Currier collection which was dropped and fragmented prior to sale.   The orange crystals were checked via single crystal X-ray and proved to be exceptional examples of shinkolobweite.   Other, yet unidentified species are present.   

Mineral Data
What's on the rock

Shinkolobweite

Formula: 
Pb1.25[U5+(H2O)2(U6+O2)5O8(OH)2](H2O)5
Crystal System: 
Orthorhombic
Hardness: 
2
Colour: 
Dark reddish brown
Streak: 
Light bronze-yellow
Type Locality: 
Shinkolobwe Mine, Shinkolobwe, Kambove, Haut-Katanga, DR Congo

Wyartite

Formula: 
CaU5+(UO2)2(CO3)O4(OH)·7H2O
Strunz: 
5.EA.15
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 4.0
Type Locality: 
Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

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$2850
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