TrekGEO > Mineral Trail > Occurrence > Sediment-hosted Copper Deposit (Continental)

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Sediment-hosted Copper Deposit (Continental)

Chemical Process (Solution-Rock interaction) - Ground Surface (Meteoric)


Red bed copper deposit

Required Geological Setting

Paleogene and older sediments


Copper sulfide deposits in continental sedimentary rocks such as conglomerate, shale, sandstone, and dolomite, often associated with coal. Host rock is subjected only to diagenesis, and not to any volcanic activity nor metamorphism. Deposits produce sulfide minerals as nodules in sedimentary rocks and/or as a matrix of sandstone. Most deposits are in Jurassic to Carboniferous beds in continents. Sulfide minerals are considered to be deposited from meteoric water, thus the deposits are not classified to the sedimentary deposit in the strict sense. This type of deposit seems to be a type of the Mississippi valley-type deposit where a role of petroleum is replaced by coal.

Mineral Assemblages

Quartz, Pyrite, Chalcocite, Chalcopyrite, Bornite

Mineral Assemblages (Secondary minerals)

Malachite, Covellite

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