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Ask The Experts: How to remove precious metals from lead?
August 2010 by Thom Seal, PhD, PE
I have a large amount of precious metals, gold and silver, mixed in with lead. Cupelling is expensive. What method can I use to extract the gold and silver without cupelling?Ask The Experts—Iridium
Q: I believe I have found a deposit that contains iridium. What can you tell me about iridium? Are there any tests I can do in the field to confirm it is iridium? How much is iridium worth? Where can I get it assayed? Can I refine it myself?
East Coast Dredger Heads West - Part I
Prospectors east of the Mississippi have their share of gold bearing property to explore and prospect upon. There’s plenty of undiscovered gold on the bottoms of the creeks and rivers running through the eastern gold belt.
Legislative and Regulatory Update
• Our Federal Landlord
• One down, two to go
• Challenging timing windows in Washington State
• More roadblocks to mining
Mining Claim Fees Are Going Up
The Northwest Mining Association reports that the claim maintenance fee for 2004-2005 will be raised.
The Skaergaard Intrusion
First put on the map by two British geologists in the 1930s, the Skaergaard igneous intrusion on East Greenland’s rugged mountainous coast is arguably one of the most studied and researched rock bodies in the world.
Advantages of Modern Prospectors
Modern-day placer miners have many advantages over the prospectors of the gold rush days. Our prospectors can reap many benefits from accumulated knowledge of the last 100 to 150 years, which is a long and impressive list.
Mohave County, Arizona: The Oatman/San Francisco Mining District
The Oatman/San Francisco Mining District’s historic gold production of 2.2 million ounces of gold since the 1880s makes this area Arizona’s greatest primary gold producing district.
Subscription Required:
The Bawl Mill
• Legislative and Regulatory Update
• Commercial Placer Mining With Jigs
• Ask The Experts: Bench Top Crushers
• How to Properly Ground Balance to Find the Most Gold
• Authorities Search for Lost Treasure Hunters
• Alaska Geologist Survives Grizzly Attack
• The Guaniamo Diamond Area, Venezuela—Part II
• How California Became the Golden State
• The Rocky Bar Mining District, Idaho
• Mining Stock Quotes, Mineral & Metal Prices
Free:
The Jenkins Mine Project—The Golden Rules of Science
• Melman on Gold & Silver
• ICMJ Again Matches Funds For PLP Donations
