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Chalcomenite & Demesmaekerite

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BCK698458

Chalcomenite & Demesmaekerite

David Burgess Collection
Type Locality

Description Tabs

Description
Locality: 
Musonoi Mine, Kolwezi, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 4.6 × 3.8 cm
Description

You are bidding on a large sample with two vugs hosting beautiful blue crystals of chalcomenite with bladed, olive green crystals of demesmaekerite with malachite crystals and tiny prisms of selenian barite in digenite matrix. Very rich and aesthetic sample from the David Burgess collection. 

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

Demesmaekerite

Formula: 
Pb2Cu5(UO2)2(SeO3)6(OH)6·2H2O
Strunz: 
4.JJ.20
Crystal System: 
Triclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Musonoi Mine, Kolwezi, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

Seller Information

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