Las Médulas—The Gem of the Roman Gold Mines
July 2018 by Alan J. Chenworth
This mine was a real wonder of engineering, and the water supply and drifts had to be carefully managed to keep it in operation. In fact, it didn’t close due to lack of gold, but instead closed with the fall of the Roman Empire.
Even though these were some of the earliest placer deposits to be worked, there is still plenty of gold left today—it just takes more work to recover. Knowing about the old locations where gold has been found is the first step to success.
From time to time I’ve been doing a series on critical metals and how important they are to our complex and technological society. This month we are going to take a look at copper, and how important that metal is to our modern lives.
The placer mineral identification key is designed to answer this question. It attempts to recognize all the minerals in your gold pan concentrates.
In the summer of 1854, John Selkirk, a discouraged placer miner who was down on his luck and ready to go back to Massachusetts, tied his mule up in a gulch north of what is now downtown Angel's Camp.
There is a major change coming in the economy of the world and now is the time for prospectors and miners to grab a ticket and get on board.
Gold and jade are actually only minor mineral resources for the Northwestern Alaska region as a whole. Modern prospecting has focused more on base metal than precious metal resources.
The Bawl Mill • Ask The Experts - How were those gold concentrate bricks made? • Ask The Experts - What should I know about prospecting for titanium? • Mining Pegmatite Deposits • Legislative and Regulatory Update • SS Central America Gives Up Millions in Gold Rush Era Gold • Falcon Fanatic: Journey of a Novice Detectorist • Critical Minerals: Titanium • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices