Prospecting for Diamonds in Kimberlite
January 2014 by W. Dan HauselKimberlite is very difficult for geologists to find, let alone prospectors and rock hounds. This is because kimberlite is rarely exposed on the surface and few people know how to identify the rock.
Can a metal detector be used to find limonitic gossan material?
The zone of influence of each sample must be carefully considered when deciding how far sample sites should be spaced from each other.
The larger nuggets were all old channel gold, smooth and water-worn. I guessed that a few of them would push a bit under one-half-ounce apiece.
Most dry washers have a feed rate adjustment. It needs to be set so that the material flows evenly over the riffles and does not bury them.
We panned out maybe three gold pans of the material and we were shocked at the gold that was there. This rock appeared to be rich.
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