I want to know more about Cu deposits in the world.
Four types strongly enriched in Cu exist:
1. The Late Mesozoic to Cenozoic Cu-Mo-Au porhyry/ skarn deposits in the modern fold belts
2. The Precambrian Cu-Co belt of the Central African Craton
3. The argillaceous polymetallic Cu shales ("Kupferschiefer") in Central Europe and the arenaceous polmetallic Cu sandstones in Central Asia during the Late Paleozoic
4. Cu in VMS from the Precambrian to the Cenozoic
Cu is also associated in Ni and PGE magmatic deposits of Precambrian and late Paleozoic age
HGD
Something unique happened during the Precambrian where Michigan is today. Fissures and veins of native (pure) copper were deposited with flood basalts during the formation of the Keweenawan Rift.
Some 1/2 million tons of the metal were mined between 5,000 BC and 1300 BC probably by the ancient Minoans of Crete. The copper was mixed with tin from Cornwall and started the Bronze Age in Europe.
The boats that brought the miners are depicted on the walls on the Greek island of Santorini (attached).
На долю меднопорфировых месторождений приходятся основные мировые запасы меди. Известны 3 пояса меднопорфировых месторождений планетарного масштаба.
1 Тихоокеанский (возраст Мезозой-Кайнозой), это месторождения Чили, Перу, Мексики, США, Канады.
2 Средиземноморский пояс (Кайнозой) - месторождения Ирана, Афганистана, Турции, Болгарии и др.
3 Казахстано-Монгольский (герциского, отчасти каледонского возраста) - месторождения Китая, Тувы, Монголии, Узбекистана и др. (В.В. Авдонин).
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