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Chalcomenite & Uraninite

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LGM705191

Chalcomenite & Uraninite

ex Marcus Lueg personal collection
New Discovery

Description Tabs

Description
Locality: 
Shinkolobwe Mine, Shinkolobwe, Kambove, Haut-Katanga, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 5 × 2.5 cm
Weight: 
57.00gr
Description

Specimen featuring greenish tabular chalcomenite, traces of native gold, blackish uraninite and miscellaneous unidentified secondary uranium minerals. The Shinkolobwe Mine is the type locality for more than 3 dozen mineral species - so this specimen maybe worth an analysis.

According to a personal notice of a Congo expert, this specimen is more likely from Musonoi, the black mineral is in fact selenium rich digenite and the presence of gold is doubtful.

Radioactive due to content of U (appr. 7.8 micro Sv/h within spitting distance).

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

Uraninite

Formula: 
UO2
Strunz: 
4.DL.05
Crystal System: 
Isometric
Hardness: 
5.0 - 6.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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