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Cornetite

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CR16382

Cornetite

Description Tabs

Description
Locality: 
Star of the Congo Mine, Lubumbashi, Haut-Katanga, DR Congo
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 5.2 × 2.6 cm
Description

Very rich dense growth of very fine acicular crystals in a fine rounded botroidal look; the fine micro-crystals bring a nice sparkling luster to the piece.

The deep blue colour is excellent!

Star of Congo (Etoile) Mine is the type locality for cornetite.

Mineral Data
What's on the rock

Cornetite

Formula: 
Cu3(PO4)(OH)3
Strunz: 
8.BE.15
Hardness: 
4.5
Type Locality: 
L'Etoile du Congo Mine (Star of the Congo Mine; Kalukuluku Mine), Lubumbashi (Elizabethville), Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)...