Gold Refining In The Ancient World
March 2015 by Bill RichOne thing that stood out for me is that Agricola was very specific about the type of metal or wood in the implements and vessels that were to be used.
Apart from the hard rock mines, there are abundant gold-bearing placers, especially in the areas in and around Oriental Wash.
Quiz yourself about the stream in figure 5. Based on your previous knowledge of where gold is found in a stream and in this article, where do you think you will find the most gold?
Unfortunately for us mortal humans, we have a poor perspective on geologic time. When we look at a landscape such as a stream valley, we see it only in two, or at the most, three dimensions. We have poor comprehension of the valley’s fourth and most important dimension—time.
I (enjoy) Twain’s description of a gold mine, “A hole in the ground with a liar at the top.” Some humor here? You bet, but I’m sure he meant it to be a real eye opener as well.
In some ways, silver is the forgotten precious metal because it straddles both the world of precious metals and jewelry, while having many important industrial applications like a base metal. The price of silver reflects both the precious metal investment demand as well as the industrial demand.
The hair stood up on the back of my neck when I saw this, especially the nice patches of wash in the bottoms of the gullies, a sure sign of an auriferous source being nearby.
I set up my dry washer on the north side of the cut and sampled the bed rock and dumps around me. As I was only sampling, I ran for 20-30 minutes, shoveling from a variety of areas.
The Bawl Mill • Our Readers Say • Ask The Experts • Ask The Experts • Ask The Experts • Just Another Ordinary Weekend • Small-Scale Hard Rock Mining With Water Recycling • The Paragenesis of Gold & Silver Deposits • Getting A Successful Start in Metal Detecting for Gold • Placer Mining At Chititu Creek, Alaska • Gold Rush Continues in Africa • Tasers and Mining Don't Mix • Thinking Outside The Creek • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices