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Prospecting for Hardrock Platinum, Nickel & Copper Deposits
October 2007 by Chris Ralph
Recent sharp price increases for copper, nickel and platinum group metals (PGMs) have greatly stimulated exploration for these metals, and individual prospectors have made important discoveries of new deposits.
Small-Scale Processing of Hard Rock Ores
Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.
The Memorial Day Nugget
After picking up a large grey rock, ready to discard it, I immediately noted it was extremely heavy. My eyes started getting bigger and bigger as I wiped off the surface dirt and moistened it—the color yellow started showing.
Hard Rock 101: Blasting With Kinepak Explosives
Fortunately, there are products on the market that can address these problems and make a small-scale mining operation feasible.
Silver Bonanza in the Sierra Madre: The Glorious Past of Batopilas—Conclusion
The first Madero Revolution broke out in Mexico on November 20, 1910. On December 27, a revolutionary party exacted supplies, arms, and mules from the company until January 7, 1911, when the 7th Cavalry Regiment of the federal government destroyed three and a half tons of their dynamite near Baquiachi. On September 8, 1912, Batopilas was captured, a local garrison driven out, and the company forced to pay 10,000 pesos. Federal forces retook the town September 19.
The Furnace Atmosphere During the Fire Assay
It has been claimed that the introduction of excess air to the assay furnace during sample fusion can materially increase the gold yield. Testimony by expert witnesses for the defense in recent federal hearings dealing with the dependability of the gold fire assay includes data purported to show this.
Diamond Exploration and Mining Heating Up in North America
Diamond exploration in Canada has led to a major new industry that did not exist prior to six years ago. Yet today, Canada ranks as one of the world’s leading producers of gem-quality diamonds.
Reading A River: Finding The Paystreaks—Part I
How to read a river to find gold: The exact point where you choose to dig for gold makes a big difference because the placer gold deposits formed in rivers and streams are anything but uniform—some parts are rich in gold...
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The Bawl Mill
• An Answer to Endangered Salmon?
• Journeys in the Kingman Quadrangle—Part III
• Detecting in Australia's Etheridge Goldfield
• Silver Bonanza in the Sierra Madre: The Glorious Past of Batopilas—Pt I
• Another Successful Northwest Miners Rally
• California State Gold Panning Championships September 1-2, 2007
• The Next Crisis For America
• Melman on Gold & Silver
• Barrick Offers $10 Million to Unlock Silver Ore
• Mining Stock Quotes and Mineral & Metal Prices
