All Articles
Prospecting for Silver With a Geiger Counter
January 2001 by Edgar B. Heylmun, PhD
Light-colored volcanic tuff or tuffaceous sandstone often contains small amounts of uranium, enough to be detected with a sensitive radiation detector. Sometimes, the mass effect of the radiation is substantial.Additional articles that might interest you...
Looking Back
November 2005
Excerpts from CMJ published 50 years ago this month.
Excerpts from CMJ published 50 years ago this month.
Small-Scale Hard Rock Mining With Water Recycling
March 2015
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.
Placer Platinum
June 2004
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.
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.
Judge Denies Request To Delay Michigan Mine
October 2011
Manderfield’s ruling opens the way for Kennecott Eagle to begin blasting. The company has declined to say when it will start. A spokeswoman said drilling would begin “in the coming weeks".
Manderfield’s ruling opens the way for Kennecott Eagle to begin blasting. The company has declined to say when it will start. A spokeswoman said drilling would begin “in the coming weeks".
Melman on Gold & Silver
August 1999
...we are beginning to believe that there is a Grinch out there who steals every rally away from the gold market! There is almost no other explanation for what is going on.
...we are beginning to believe that there is a Grinch out there who steals every rally away from the gold market! There is almost no other explanation for what is going on.
Subscription Required:
The Bawl Mill
• Over the Divide
• Our Readers Say
• Special Editorial: Gold Anti-Trust Action Committee Believes They Have the Evidence
• World Gold Council News
• Metal Detecting Within the Cordillera for Gold Placers Associated With Tertiary Epithermal Ore Deposits
• Picks & Pans: An Exciting Hobby
• The Furnace Atmosphere During the Fire Assay
• The Hanging Tree
• Gold in Chihuahua, Mexico
• ICMJ 10th Annual Photo Contest Results
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
