Vms Volcanogenic Massive Sulphide Ore Deposits
Apr 24, average volcanogenic massive sulphide ore deposits grades: 5% copper. 4% zinc. 1% lead. maybe 1 gram per tonne of gold. again there are a few outlines with far higher grades than these. let’s look now at a few examples of vms deposits. nevsun’s bisha deposit near eritrea is a superb example of a vms.