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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...Hope Boy Finds Gem During Field Trip
It's not THE Hope Diamond, but a half-carat yellow gem worth up to $700 will fit that bill for an elementary school student from, where else, Hope.
The Forms of Crystalline Gold
The largest and most perfect single gold crystals are nearly always in the form of octahedra. These large octahedral crystals often possess deeply recessed faces.
MMAC Update
If you are a claimholder and your Mining District is in disarray, it’s time to join MMAC and get on board so your district can benefit from these changes as they are implemented.
Gold Prospecting for Better or Worse: Bumbling Through A Gold Bonanza
On about the fifth time across one of these slopes, and down near the little wash...bam! I found a nice chunk of rock, laced through with gold. Wow! How had I missed this?
Common Operations—Small-Scale Mining and Sharing the "Take"
The “Forty-niners,” known as “Argonauts,” separated the loose gold known as “wet diggin’s” from the river gravels using a wash pan. The pan was made of tin or iron and had a flat bottom and sloping sides.
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.
The Bawl Mill
• Employee takes 15-year vacation
• Congratulations! Nevermind...
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The Bawl Mill
• Lawsuit to Challenge New Forest Service Regulations
• 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
