History & Geology
Glaciers and Placer Gold Deposits
November 2016 by Chris Ralph
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.
Mineral Deposit Trends: Real and Imaginary
One of the most important things prospectors do is work to figure out where to go prospecting. Along with understanding the basic geology and putting yourself in a favorable area, one of the things a prospector might consider in finding a location to search is the existence of mining belts also known as mineral deposit trends.
The Miner’s Switchback
Common thought is the switchback slows the velocity of the rushing water and gold drops out from the cut bank to a fill gravel bar within or below the switchback. I am not going to disregard that model; however, I hope to improve upon it.
The Many Facets of Iron
I’ve been fascinated by iron minerals for many years. So let’s take a look at this very interesting and colorful element.
All About Chalcopyrite
…there are loads of different copper minerals, but a large number of them form first in the ground as chalcopyrite and then through the effects of weathering are changed into other minerals like malachite, cuprite and chrysocolla.
Gold Deposits of Montana
Historically, Montana has been an important gold producer, in terms of both lodes and placers, and it still produces gold for the prospector today.
Prospecting for Diamonds in Kimberlite
Kimberlite 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.
Sierra County Gold—Part II
...we will continue our examination of the rich streams and mining districts, and then take a look at some of the big nuggets that have been found here.
Subscription Required:
The Bawl Mill
• Our Readers Say
• Legislative and Regulatory Update
• Detecting: Small Creek Yields Good Gold
• Ask The Experts: Is this BLM demand legitimate?
• The Challenge of Winter Dredging
• What Have You Got to Lose?
• MMAC Update
• How to Upgrade Your Pocket Plunger
• What's In A Name?
• Oregon Miners Still Fighting
• Greenhorn Finds Gold in Colorado
• Mining Stock Quotes and Mineral & Metal Prices
• Melman on Gold & Silver
Free:
