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.
Wouldn’t it be great if you could know if there is gold in the ground without setting foot on the ground? Well you can, to a certain extent, if you can recognize mined ground from unmined.
Gold is a fairly widespread mineral in the Italian Alps and in the Northern Apennines. It is found both in primary mineralization and in past and recent floods.
What many people don’t realize is that the Comstock Lode produced over 8,000,000 ounces of gold…
It was the middle of winter and the valley was covered in snow, making prospecting a matter of sinking shafts in the ground.
Historically, Montana has been an important gold producer, in terms of both lodes and placers, and it still produces gold for the prospector today.
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.
There are a large number of different kinds of gangue minerals, and each of them has its own tale to contribute to the story of the chemistry and geology of a deposit.
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