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Prospecting With a Magnetometer

Swedes were the first to note variations in the Earth's magnetic field, circa 1640, and they were the first to use the dip needle. They made the first magnetometer in 1870.

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Collecting Garnets in Wyoming


In Wyoming, garnets are often common where aluminum-rich (micaceous) rocks have been highly metamorphosed. Such rocks are recognized by abundant black (biotite), silver (muscovite), or green (chlorite) mica with periodic grains of red garnet.

2002 Inductees to the National Mining Hall of Fame


Seven legendary figures of American mining will be enshrined in the National Mining Hall of Fame in ceremonies on Saturday, September 7, 2002, at The Little America Hotel in Salt Lake City, Utah.

Melman on Gold & Silver


What a disappointment! Just when things were beginning to get really interesting and both parties had seemingly hotly contested races for the presidential nominations, both Senators involved promptly said, "I quit!," took their bat and ball and headed home!

Update: Public Lands for the People


Electra Gold Sees Potential in Other Minerals & Metals


One of the particular features of these alumina silica ore bodies is that they are generally visible from the surface, unlike like gold and silver that are generally hidden and can require an immense amount of exploration and development.

Glaciers and Placer Gold Deposits


It also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.

Placer Gold Deposits of New Mexico


While a large number of locations have yielded some placer gold, most of the state’s placer production has come from a few productive districts.

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The Bawl Mill   • Over the Divide   • Our Readers Say   • Desert Phone Trashed   • ICMJ Elected Prospecting Magazine of 1999   • Advertising Manager Leaving ICMJ   • Guest Editorial—California "Special" Dredge Permits in Jeopardy   • The Search Continues   • Guest Editorial: U.S. Government—Like Nobody's Business   • Circulation and Collections Manager Leaving ICMJ   • Company Notes   • House Chair Requests Records on Forest Decision   • BLM Wants to Withdraw South Pass Public Land   • Silverton Preserving Lofty Symbol of Mining Era   • Hijackers Make Off With 660 Pounds of Gold   • 1999 Tables of Content   • Lighting the Way Underground 1860-1940s   • Millie's Tailings   • Picks & Pans: Crevicing & Sniping for Placer Gold   • Looking Back   • Gold in Sonora   • Forest Service Boss Quits in Bull Trout Flap   • Melman on Gold & Silver   • European Gold Miners Seek Clarification Letter   • Mining Stock Quotes and Mineral & Metal Prices   • Squeezing Diamond Into Graphite

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