Simple Rules of Gold Geology: Comparing Epithermal and Mesothermal Deposits

July 2017 by Chris Ralph

Geology is a science of general tendencies with frequent exceptions, not one of hard and fast rules that are always true and never vary. For almost every well-accepted rule of gold deposits, I can point you to a number of important exceptions.

Ancient River Channels of Trinity County

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Trinity County is located in the far northwest corner of California and stirs up many different memories for those who have been there.

Gemstones to Die For

November 2014
Some gems can potentially poison you, make you sterile and even make you forget who you are.

The Seven Troughs Mining District

September 2016
The favorable geology of the northeastern and central parts of the Seven Troughs Range are the parts most interesting to prospectors. They are underlain by a thick sequence of Tertiary volcanic rocks, mostly rhyolites and andesites.

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The Pearce Mineralized Area, Dragoon Mountains, Arizona—Part II

August 2013
There are many prospects within the known mineralized area and along the margins of the mineralized area that should be examined for gold and silver.

Understanding Large Gold Deposit Types: Discovering New Mines

November 2018

The other opportunity that I see is in seeking unusual types of deposits. Specifically, the prospector would be searching for the stuff no one (or almost no one) is searching for. These deposits are effectively hiding in plain view.

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June 2015
Gold in clastic black shale

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