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Chalcomenite

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PDM865855

Chalcomenite

Rare Mineral

Description Tabs

Description
Locality: 
Musonoi Mine, Kolwezi, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.7 × 1.3 cm
Description

Elongated matrix piece of selenium-rich digenite rich in banded crusts of deep blue chalcomenite. At three of the four faces of the matrix there are geodes that host well formed, lustrous isolated or aggregated crystals of chalcomenite, perfectly terminated. The piece shows some reaction to the Geiger so radioactive species are associated. A very good example of this copper-selenide from this hard to get locality.

Please watch the associated Video.

Ex Francis Hubert #10514.

Mineral Data
What's on the rock

Chalcomenite

Formula: 
CuSeO3·2H2O
Strunz: 
4.JH.05
Crystal System: 
Orthorhombic
Hardness: 
2.0 - 2.5
Type Locality: 
Cerro de Cacheuta, Sierra de Cacheuta, Mendoza, Argentina
Video

Chalcomenite Musonoi Mine, Kolwezi, Lualaba, DR Congo FH10514 24x17x13

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