History & Geology
Critical Metals: Lithium
February 2014 by Chris Ralph
Prospecting for lithium deposits can take a number of different directions, because this metal can be extracted from a variety of geologically differnet sources.
The Giant King Mine
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.
Sierra County Gold—Part II
...we will continue our examination of the rich streams and mining districts, and then take a look at some of the big nuggets that have been found here.
Simple Rules of Gold Geology: Comparing Epithermal and Mesothermal Deposits
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.
Natural Gold Alloys
Natural gold is never 100% pure; all natural nuggets contain at least some impurities. We're going to take a look at just what some of those impurities might be.
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 Basics of Geophysical Exploration
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...
Strategic Metals—Part II
There are literally thousands of abandoned wasterock and ore dumps that dot the United States that could hold many tones of strategic metals.
Subscription Required:
The Bawl Mill
• Legislative and Regulatory Update
• Ask the Experts
• Ask the Experts
• Ask the Experts
• Ask the Experts
• Our Readers Say
• The Perfect Summer
• Eolian Gold Deposits
• Copper Deposits of Alaska
• Divide and Conquer—Detecting Old Placer Grounds with Friends
• Reserves and Resources Explained
• Coprolite—A Prospector's Tale
• Comstock Mining Gets Approval
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
SB 838 and the Future of Mining in Oregon
• New Mining Regulations in Maine
