EDITORIAL & OPINION -- GEOLOGY 101 -- Zinc-copper VMS deposits, Part 1

There are two main sub-types of copper-zinc volcanogenic massive sulphide (VMS) deposits: those that occur in Archean-Proterozoic greenstone belts (the Noranda-type) and those that formed in ocean environments less than 600 million years ago (the Cyprus- or ophiolite-type).These deposits exhibit...

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