Malachite

specimen number:
9505350

location:
Mashamba West Mine, Kolwezi, Lualaba, DR Congo

description:

A superb ball of crystallized deep green malachite set on matrix. In terrific condition. Excellent for the species, from recent finds, 2021, in the Congo.

The Mashamba West Mine, situated within the Kolwezi Klippe of the Lualaba Province in the Democratic Republic of the Congo, is a prominent component of the Central African Copperbelt. Formally developed as part of regional industrial scaling during the latter half of the 20th century, the open-pit operation has experienced various phases of state and joint-venture management, continuing active production into the 21st century. Geologically, the deposit is hosted within the Neoproterozoic Roan Group rocks of the Mines Subgroup, preserved inside a complex tectonic thrust-sheet structure. The orebody features classic sediment-hosted stratiform copper and cobalt mineralization, characterized by an upper zone of supergene oxidation containing rich assemblages of malachite, heterogenite, and other secondary copper-cobalt minerals, transitioning downward into primary sulfide assemblages such as chalcocite and bornite.

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