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Placer Platinum
June 2004 by Edgar B. Heylmun, PhD
The platinum group metals (PGMs) are divided into three that are “light,” about the same atomic weight as silver, and three that are “heavy,” about the same atomic weight as gold. The three light PGMs are ruthenium, rhodium, and palladium, and the three heavy PGMs are osmium, iridium, and platinum.Ask The Experts
Q: Is this gold or some other metal?
A Unique Prospecting Method
In 1948, I lived alone in the Cerrillos Mountains south of Santa Fe, New Mexico, at the Tom Payne Mine. When lead and zinc metal prices suddenly took a nosedive, our ore and concentrate shipments from the Payne to the ASARCO smelter...
Legislative and Regulatory Update
• Conformation for some
• Congress canceling regulations
Who Says You Have to Own a Claim to Find Gold?
Most of us know making a profit as a small-scale miner is difficult; however, sometimes we combine luck with a little skill and bring home a few ounces of the yellow stuff.
A New Method for Handling Stubborn Gravity Middlings
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
Getting Started
He excitedly told me he was going mining and wanted to know where he should go, how to do it, and so on. After he calmed down, I got excited. “I need to go!” was my response.
California State Gold Panning Championship Results
The seventh annual California State Championships started off with a roar and it never ended until the champions were named at the end of the two-day event. The setting was perfect. The event was being held in the historic mining town of Foresthill, northeast of Sacramento.
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The Bawl Mill
• Higher Copper Price Brings Hope, Jobs
• Zeballos Gold Camp, British Columbia
• Agreement Allows Pogo Mine to Resume Construction
• Treasure Hawk Mine Back in Action
• Oregon Dredgers Receive Threats From Environmentalists
• Understanding Hard Rock Mining: Terms and Methods—Part I
• Mood at Calgary Conference is Subdued, But Optomistic
• Reinventing the Wheel—The Infinity-Jet
• Company Notes
• Endangered Species Act is a Mess
• Here Come the MineBots
• Agency Gives Initial Backing to Kensington Mine
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Melman on Gold & Silver
• Brits Thwart Robbery of Gold and Cash
