Ask the Experts: VMS ore
August 2012 by Chris RalphQ: Are there any mills that handle VMS ore?
Only the famous Kennecott copper mine was able to continue operating through the Depression owing to the exceptional richness of its ore.
In some places, semi-continuous sections of riverbed can easily be linked in many places to identify the path of the ancient rivers.
Until just recently, platinum-group metals (PGMs), especially palladium, had been holding their own on the market. But, Russia has now resumed shipments and it has brought prices down.
The placer deposits of Utah occur in two distinct types of environments. These are 1) placers found adjacent to, and derived from, gold, silver and base-metal deposits; and 2) placers found in major rivers and derived from unknown, distant sources.
The other distinguishing feature of calcite has to do with its chemistry. Geologists sometimes take a small bottle of dilute hydrochloric acid out into the field with them because calcite reacts with acids to make a bubbly foam.
The country we were to visit was Burkina Faso, a small country about the same size of my home state of Nevada with about 10 times more people. The second day I was in Africa, we went out to the goldfields for the first time.
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