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Lump Gulch is an area of silver and gold mines in Jefferson County in the state of Montana in the United States. It's also known as the Lump Gulch Placer and the Lump Gulch Mining District and a former mining camp called Lump Gulch City. [1] [2] [3] It was named Lump Gulch in 1864 after a lump of gold found by prospectors William Sprague and ...
The most important mines, including the Hummingbird, Slim Jim, Schabert, Baker Group, and Three Sisters, are all located along the divide between Confederate Gulch and White Creek, principally on Miller Mountain. Lode mines produced only $100,000 in gold, while the placers of Confederate Gulch yielded this sum one hundred and fifty times over.
Placer mining is frequently used for precious metal deposits (particularly gold) and gemstones, both of which are often found in alluvial deposits—deposits of sand and gravel in modern or ancient stream beds, or occasionally glacial deposits. The metal or gemstones, having been moved by stream flow from an original source such as a vein, are ...
Hydraulic gold mining in Alder Gulch, 1871. Photo by William Henry Jackson. Placer mining in Alder Gulch, 1872. Alder Gulch (alternatively called Alder Creek) is a place in the Ruby River valley, in the U.S. state of Montana, where gold was discovered on May 26, 1863, by William Fairweather and a group of men including Barney Hughes, Thomas Cover, Henry Rodgers, Henry Edgar and Bill Sweeney ...
FILE - The Stillwater Mining Company, the only platinum and palladium mine in the United States, is seen near Nye, Mont., May 2, 2013. (AP Photo/Matthew Brown, File) (ASSOCIATED PRESS)
The mine shaft was 280 feet (85 m) deep and contained two Yogo ore-bearing veins. [84] The portion of the dike they had mined was an extension of the main dike. [85] The Vortex Mine, renamed Yogo Creek Mining, [18] was successful for years but eventually declined and closed in 2004. [85] A 0.19-carat (0.038 g) diamond cut cornflower blue Yogo ...
But the placer deposits worked in the early years were quickly exhausted, and production crashed. Hardrock mining (in California called quartz mining) began in 1849, and placer mining by hydraulic mining began in 1852. Despite the new mining methods, by 1865 production was 867,000 troy ounces (27,000 kg), less than one-quarter of peak production.
Mining Claim Corner, Blue Ribbon Mine, Alaska. A placer claim is a mining claim on gravel or ground from which minerals are extracted using water. [1] In the United States, the valuable mineral in a placer claim is almost always gold, although other nations mine placer deposits of platinum, tin, and diamonds.