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Uranophane Alpha On Cobaltoan Calcite

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PDM876261

Uranophane Alpha On Cobaltoan Calcite

Classic Locality

Description Tabs

Description
Locality: 
Kalongwe Deposit, Kolwezi, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 3.1 × 2.3 cm
Largest Crystal: 
0.80cm
Description

Even if Kalongwe is the type locality of known species such cuprosklodowskite or vandenbrandeite, specimens from this super old locality are extremely rare in the market. This sample features a matrix cavity of pink cobaltoan calcite crystals richly associated to canary yellow prismatic crystals of uranophane-α. Some areas of the matrix have been sawn.

Found before 1985. Ex Joseph Lhoest.

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Mineral Data
What's on the rock

Uranophane Alpha

Synonym Of: 

Uranophane

Formula: 
Ca(UO2)2[HSiO4]2·5H2O
Strunz: 
9.AK.15
Hardness: 
2.0 - 3.0

Cobaltoan Calcite

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0
Formula: 
(Ca,Co)CO3
Hardness: 
0.0

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