Alluvial Paystreaks

November 2018 by Matteo Oberto

The gravels in contact with the bedrock or false bedrock base are often the richest. The same facts apply to the alluvial paystreaks that are formed on gravel bars; the lowest level of the gold-bearing gravel is normally the richest.

Over the Divide: John A. Miscovich

October 2014
Mining “giant” John A. Miscovich died August 22, 2014, at the age of 96. He was the well-known inventor of the “Intelligiant” water cannon.

Gold Rush Continues in Africa

March 2015
…some miners are doing exceptionally well… with a few obtaining amounts estimated in the millions of dollars.

Calcite and Limestone

February 2017
The other distinguishing feature of calcite has to do with its chemistry. Geologists sometimes take a small bottle of dilute hydrochloric acid out into the field with them because calcite reacts with acids to make a bubbly foam.

Gold of the Iditarod Mining District, Alaska

March 2014
It was the middle of winter and the valley was covered in snow, making prospecting a matter of sinking shafts in the ground.

Eastern Arizona: Gold and Base Metal Deposits—Part I

February 2011
Arizona is well-known for its copper-gold porphyries and massive base metal-gold sulfide deposits such that primary gold deposits in the state are often overshadowed.

The Giant King Mine

July 2014
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.

The Paragenesis of Gold & Silver Deposits

March 2015
…if you are game for digging in and learning more about the intricate details of how gold deposits form, then let’s jump right in.

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