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.
It also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.
Q: Is this gold or some other metal?
Potholes in bedrock can trap placer minerals and even be glory holes. They are, at least, interesting geologic phenomena, and at best, a treasure trove of gold nuggets.
Liberty, Washington is located in the mountains near Yakima and Ellensburg. There is nothing much in Liberty except for about 20 houses on patented mining claims and a lot of dry holes.
In this article, we’re going to take a look at the minerals that contain gold and silver, and how you as a prospector can identify them in the field.
Has your experience ever led you to wonder why some gold is deposited on bedrock and in crevices, while other gold is not? We’re going take a deeper look at this and see what we can figure it out.
…it was immediately evident the previous owner had not been using a detector. During just a few months of working the dumps part-time, he recovered gold in quartz specimens valued in excess of $40,000.
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