Professional Equipment for Serious Detectorists!

Magazine

History & Geology

Epithermal Gold and Silver Deposits

Epithermal deposits form in the ground at shallow depths. They are popular with prospectors because can yield very rich deposits and they are widespread in the Western US.

Online access required. Please .

Add a Comment

Additional articles that might interest you...

Rock and Formations of the Mother Lode Gold Belt


The faulting, folding and shearing that occurred in the Mother Lode belt has created zones of structurally weak rocks or contacts between different types of rock, which has been favorable for the deposition of gold bearing ores.

The Rochester Mining District of Nevada


Only the richest ores could be worked and shipped off for processing at a profit. As a result, early mining in the southern part of the Humboldt Range was short-lived. In the 1880s, placers were discovered in Spring Valley and American Valley on the east side of the range...

Round Mountain, Nevada


There are a number of veins in the disseminated mineralization, but the principle ones on Round Mountain are known as the Los Gazabo and the Keane.

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.

How Rich Must My Ore Be?


How rich does a hard rock ore have to be for it to be worthwhile to process and extract the gold?

Alaska's Cripple Creek Mining District


If developed with metal detecting in mind, this virgin ground could be a bonanza for nugget hunting.

Prospecting for Copper—What to Look for on the Outcrop


For the prospector, knowing what oxidized hydrothermal alteration looks like in the field is an important exploration tool.

Subscription Required:
The Bawl Mill   • Legislative and Regulatory Update   • Ask The Experts: Is an XRF gun useful for prospecting and mineral identification?   • Ask The Experts: Is this deposit worth working?   • Ask The Experts: Can a long range locator probe detect gold in quartz?   • Weathering, Erosion and Placers   • The PIGMI—a DIY Crevice Tool   • Diary of a Diamond Prospector   • The Ups and Downs of Nugget Hunting   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

Free:
MMAC Update

Advertisements

Precious Metals Recovery plants and equipment
Fighting to keep public lands open to the public
Specializing in the processing of precious metal ores!
Watch prospecting shows on your computer right now
Free Online Sample Issue