Critical Metals: Copper
May 2012 by Chris RalphFrom time to time I’ve been doing a series on critical metals and how important they are to our complex and technological society. This month we are going to take a look at copper, and how important that metal is to our modern lives.
I get a number of questions from people about testing and treating hard rock ores. The simplest way, but also an expensive one, is to just have an assay test done by an independent assay firm. As an alternative...
The excitement over IOCG deposits began with the discovery of a monster deposit at Olympic Dam in Australia in 1976. The discovery was accidental as the operator was searching for strata-bound copper deposits.
Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...
There are a large number of different kinds of gangue minerals, and each of them has its own tale to contribute to the story of the chemistry and geology of a deposit.
There are a load of ways to do research, and I’m going to talk about how I do it—maybe you’ll get some ideas that will work for you, too.
Epithermal deposits form in the ground at shallow depths. They are popular with prospectors because can yield very rich deposits and they are widespread in the Western US.
Only the richest ores could be worked and shipped off for processing at a profit. As a result, early mining in the southern part of the Humboldt Range was short-lived. In the 1880s, placers were discovered in Spring Valley and American Valley on the east side of the range...
The Bawl Mill • Ask the Experts: gold per ton; improving assay method • Bering Sea Gold—Part II • Tucson Show Marketing • Ganes Creek Hits 10 Years—Part I • Fabulous Florence—The Golden Town of Idaho • Arizona's Vulture Gold Mine and Lost Dutchman • Replacing Your 12-Volt Pump • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices