![]() Other placer deposits on the west bank of the Colorado River were quickly found, including the Picacho and Cargo Muchacho districts. Spanish prospectors found gold in the Potholes district between 17, along the Colorado River, in present Imperial County, California, about ten miles northeast from Yuma, Arizona. Weaver’s discovery started the Colorado River Gold Rush to the now ghost town of La Paz, Arizona and other locations along the river in the ensuing years. Mountain man Pauline Weaver discovered placer gold on the east side of the Colorado River in 1862. Other gold mining under Spanish and Mexican rule took place in the Oro Blanco district of Santa Cruz County, and the Arivaca district, Pima County. Gold mining continued there until 1849, when the Mexican miners were lured away by the California Gold Rush. Gold mining in Arizona reportedly began in 1774 when Spanish priest Manuel Lopez directed Papago Indians to wash gold from gravel on the flanks of the Quijotoa Mountains, Pima County. ![]() ArizonaĪrizona has produced more than 16 million troy ounces (498 tonnes) of gold. The largest gold producer is the Fort Knox mine, a large open pit and cyanide leaching operation in the Fairbanks mining district. In 2015 Alaskan mines produced 873,984 troy ounces (27,183.9 kg) of gold, 12.7% of US production. Alaska produced a total of 40,300,000 troy ounces (1,250,000 kg) of gold from 1880 through the end of 2007. Gold mining started in 1870 from placers southeast of Juneau. ![]() Russian explorers discovered placer gold in the Kenai River in 1848, but no gold was produced. The principal districts were the Arbacoochee district in Cleburne County, mostly from placer deposits, and the Hog Mountain district in Tallapoosa County, which produced 24,000 troy ounces (750 kg) from veins in schist. Gold was discovered in Alabama about 1830, shortly following the Georgia Gold Rush.
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