Garrett Electronics - trusted by real miners & prospectors!

Magazine

All Articles

Greenstone

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...

Online access required. Please .

Add a Comment

Additional articles that might interest you...

Legislative and Regulatory Update


• "Not a pollutant"
• Thank you Senator Sessions
• California suction dredging
• EPA uses secret email accounts

Our 29-Troy-Ounce Golden Blessing


I picked up a noticeably heavy, fist-sized chunk of what I thought was a heavy piece of iron. After wiping some of the dirt and clay off, I still didn't know what on earth this object was.

Ask The Experts


• A place for mining equipment "on the cheap"?

Picks & Pans: Dredging at Douglas Creek, Wyoming


Labor Day! The last chance of the year to do some dredging in Wyoming. Wyoming’s dredging season runs from June through the Labor Day weekend.

Prospecting Tales: Forest Service, Fires and Bears—Oh My!


I woke up on Sunday morning, August 10, to heavy smoke. I saw where it was coming from, but it seemed like it was a long way off so I thought I was okay for the time being.

New Silver and Zinc Mine Slated for Montana


Arizona-based International Silver Inc. is proposing an underground silver and zinc mine in Montana and has asked Butte-Silver Bow County to lease them the surface and mineral rights to hundreds of acres.

Placer Gold in Russia


Russia is the world’s largest country, some 66 million square miles that stretch over 6,000 miles, east-west, across northern Europe and Asia. The population of 150 million is only half that of the United States, being confined mostly to the European part of Russia and the southern part of Siberia.

Subscription Required:
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

Free:
Legislative and Regulatory Update

Advertisements

Garrett Electronics - trusted by real miners & prospectors!
Precious Metals Recovery plants and equipment
Fighting to keep public lands open to the public
Specializing in the processing of precious metal ores!
Watch prospecting shows on your computer right now
Free Online Sample Issue