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Greenstone
August 2004 by Edgar B. Heylmun, PhD
Greenstone is a hard, tough, altered igneous rock, usually dark green in color. The term “greenstone” has been loosely applied to all greenish rock, including peridotite, dunite, jade, serpentine, and even hydro thermally altered rocks in mining districts. True greenstone is...Melman on Gold & Silver
Unfortunately, death seemed to occupy a major role in recent major headlines—and it came in several different directions.
Synclinal Oil
Most oilfields are found in anticlinal faults, or stratigraphic traps. Oil floats on water, so that it will rise to the highest point possible, above the water. If the porous or fractured sandstone or limestone that contains the oil is overlain by impervious shale, the oil can no longer rise. If the porous bed is arched upward...
Fall Drywashing—Just the Right Time of Year
I could see lots of quartz, both loose on the hillsides and in the numerous small prospect diggings. There was a small gold rush here more than a century ago.
Legislation Would Require Palladium Coin
Pending legislation requiring the government to mint a $20 coin with palladium mined domestically would put Montana front and center.
Legislative and Regulatory Update
- Property rights advocate in running for top BLM spot
- “Draining the swamp” at Interior
Higher Copper Price Brings Hope, Jobs
Buoyed by higher copper prices, Chino Mines is reopening its ore concentrator and hiring workers.
Town Hall Meeting in Sierra City, California
I was invited to attend a meeting on April 7 in Sierra City, between Forest Service officials and a group of concerned area miners regarding what the miners described as abuses by the BLM and local Forest Service officials.
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The Bawl Mill
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• Gold in Utah Laccoliths
• Where Do I Begin?
• Looking Back
• Mine President Seeks Opinions From Peers
• Over The Divide
• Picks & Pans: Miner Finds Heart of Gold
• Company Notes
• Canadian Arrow Tries Different Approach
• Experts Forecast Rising Prices for Gold, Silver
• A Few Reminders About Fraud
• Mining: Doing it Right the First Time
• Prospectors & Treasure Hunters Find Gems
• The Golden Highway—El Dorado County
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices