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Astrocyanite-(Ce) & Kamotoite-(Y)

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SMM761193

Astrocyanite-(Ce) & Kamotoite-(Y)

Type Locality
Rare Mineral

Description Tabs

Description
Locality: 
Kamoto East Open Cut, Kamoto, Kolwezi, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.3 × 0.6 cm
Description

An exceptional specimen with many sky-blue crystals rosettes of extremely rare, astrocyanite-(Ce) scattered on the matrix along with many and beautiful quality of  kamotoite-(Y) yellow crystals, both coming from their type locality. Astrocyanite is exclusive to the type locality, while the kamotoite is only found in a handful of locations in the world. Wonderful sample for the richness and for the contrast of the two colors. The best specimen of astrocyanite-(Y) I've ever had and one of the best that I know.

Boxed with Label
Mineral Data
What's on the rock

Astrocyanite-(Ce)

Formula: 
Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2·1.5H2O
Strunz: 
5.EF.05
Crystal System: 
Hexagonal
Hardness: 
2.5
Type Locality: 
Kamoto East Open cut, Kamoto, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

Kamotoite-(Y)

Formula: 
Y2(UO2)4(CO3)3O4·14H2O
Strunz: 
5.EA.30
Crystal System: 
Monoclinic
Hardness: 
0.0
Type Locality: 
Kamoto East Open cut, Kamoto, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

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