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Prospecting & Detecting

Sierra County Gold—Part I

...this county contained some of the richest placer ground found in all of California and still produces some pretty impressive finds to this day.

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Commercial Placer Mining: Alaska Style


There are currently about 170 commercial-scale placer operations in Alaska. Most of these are small operations with just a few people working; they are often family affairs that operate seasonally only during favorable weather.

Small High-Grade Pocket Districts


…the excitement passed so quickly that little work was done, but they still have good potential, and I find they are not as well-known and not hit so hard by most prospectors.

Prospecting for Pegmatites


…in some cases pegmatites have produced individual mineral crystals that are enormous, attaining lengths of over 40 feet long, and many of the world’s largest mineral crystals are examples that were found within pegmatite deposits.

Evolution Of A Desert Wash Plant


The water instantly dropped though the screen, leaving a pile of mud behind! I was so excited that I replaced it with a 150-mesh screen, and the same thing happened!

Pumping Water With Solar Power


Solar energy can be used for any size placer or hard rock mining operation. It is most practical for small and longer-term operations provided your mine is not located in a dense forest.

Ophir—Possibly the Best Kept Secret in Alaska!


...I decided to excavate the semi-frozen high-bank that was resting on a soft shale bedrock footing. Within three feet, I encountered an intrusive!

Panning for Gold on Canyon Creek


I was able to remove the gravels with the assistance of a crowbar and I scooped them up with a garden trowel. This gravel contained over a pennyweight of gold and there were several 2-grain and 3-grain pieces…

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The Bawl Mill   • Ask the Experts   • Ask the Experts   • Ask the Experts   • ICMJ's Annual Index   • Ophir—Possibly the Best Kept Secret in Alaska—Part II   • Hunting for Hardrock: The Basics   • Gold in the San Francisco District Oatman, Mohave County, Arizona   • Heavy Glacial Rocks and Gold in the Midwest   • Strategic Metals—Part II   • The Amazing Mineral Tourmaline   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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