Professional Equipment for Serious Detectorists!

Magazine

History & Geology

How Mesothermal/Orogenic Gold Deposits Form

These deposits are very widespread across the planet. In fact, they are so extensive that something around 75% of all the gold ever mined comes from these types of deposits (if one includes the placer deposits that also formed from them).

Online access required. Please .

Add a Comment

Additional articles that might interest you...

Alaska: Kodiak Islands Mineral Resources


The fresh material is worked and concentrated by the waves on the flat, wide beach platform. The waves wash away the lighter minerals, leaving the heavies near the bluffs and in depressions on the beach.

Fabulous Florence—The Golden Town of Idaho


In September 1861, on a round-about prospecting journey homeward, five California gold miners discovered gold in the area now called Florence. While watering the horses, one of the men noticed a golden color on a piece of slate bedrock in the stream...

The Pedro Gold Dredge


The decision was made to move the dredge intact, a massive undertaking indeed. The goal was to move it only one mile to the Busby’s Chicken Gold Camp, but what a mile that was to be.

The Historic Gold Rush Town of Quincy


…we focused on various layers of hard-packed flood material out of the creek, and we also obtained some material up quite a ways from the creek itself on bedrock.

Ganes Creek After The Flood


Doug told me that there had been a 100-year flood that took place in October of 2013 and it washed out part of the mile-long landing strip. It also washed a large, wide gully down below and above the camp.

The Goldfield Mining District -- Then and Now


In 1983, some of the ore yielded more than 2,500 ounces of gold within 30 feet of the surface. The shoot pinched to a narrow vein.

Undiscovered Placer Deposits in Alaska


These conditions don’t just apply to Alaska and the Yukon; they apply to western Canada and even to the mountainous western United States.

Subscription Required:
The Bawl Mill   • Ask The Experts - Are pulse induction detectors the right tech for gold?   • Ask The Experts - Why can’t I find gold with my detector?   • Ask The Experts - Are two rock crushing machines (jaw crusher and chain crusher) necessary?   • Ask The Experts - Why am I finding only coarse gold, not fines in this area?   • Ask The Experts - Is the amount of gold reserves claimed by mining companies real or just hype?   • How To Identify Minerals   • Chasing Hard Rock Gold As A Placer Deposit   • Gold Prospecting for Better or Worse: Bumbling Through A Gold Bonanza   • My Explosive Introduction to Gold Mining   • Georgetown CA: A Historically Rich Mother Lode Treasure   • Reminder: Annual Claim Filings and Fees Due   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

Free:
Legislative and Regulatory Update   • PLP 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