Reno's 1872 Time Capsule Includes Gold Rush Lore

June 2019 by Associated Press

The Reno Masonic Lodge was built along the railroad tracks back when Ulysses S. Grant was president and shortly after the Comstock Lode of gold and silver was struck in Virginia City.

All About Chalcopyrite

March 2017
…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.

The Amazing Mineral Tourmaline

December 2013
It is a gemstone, and yet it is also closely associated with many types of metal ores. It's valuable itself but often points toward other valuable minerals—that is certainly something prospectors want to know more about!

The Strange History of the Utica Mine

January 2016
In the summer of 1854, John Selkirk, a discouraged placer miner who was down on his luck and ready to go back to Massachusetts, tied his mule up in a gulch north of what is now downtown Angel's Camp.

The Basics of Geophysical Exploration

February 2012
In developing a mineral property or mining claims, one of the first goals is to identify and quantify valuable deposits. The classic method of doing this is by drilling holes into the ground to sample what is below the surface. The problem is that one or two holes usually are not going to tell you a whole lot...

Prospecting for Surface Flood Gold Placers on Low and Intermediate Gradient Streams

February 2015

Sample panning is a very important method used to find the richest parts of a flood gold deposit before setting up equipment and running material.

Gold From Cemented Gravels

November 2011
The truth is that cemented gravels are really not all that complex. There is no mystery of how gold grew there or somehow wormed its way into these solid gravels.

Ask The Experts

June 2015
Sulfides and oxides—what's the difference between the two?

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