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"Panning out" ~ Stereoscopic view of print taken by the U.S. Geological and Geographic Survey of the Territories ~ circa 1874–1879 Gold panning is a simple process. Once a suitable placer deposit is located, some alluvial deposits are scooped into a pan, where they are then wetted and loosed from attached soils by soaking, fingering, and aggressive agitation in water.
Only one Colorado mine continues to produce gold, the Cripple Creek & Victor Gold Mine at Victor near Colorado Springs, an open-pit heap leach operation owned by Newmont Mining Corporation, which produced 360,000 troy ounces (11,000 kg) of gold in 2018.
The community came into being around placer gold mining in the 1860s, although the source of the nuggets remained elusive. [4] In 1879, a prospector, miner, and assayer named Jacob Hess discovered silver in Ohio Creek, until then known as Gold Creek.
Gold pans and shovels are commonly allowed, but sluice boxes and suction dredges may be prohibited in some areas. [12] [13] There are public mining areas in many states, and prospecting may allow one to stake a gold placer claim or other type of mining claim in certain areas. Some public lands have been set aside for recreational gold panning.
The Black Fork is a principal tributary of the Mohican River, 58.4 miles (94.0 km) long, [3] in north-central Ohio in the United States. Via the Mohican, Walhonding, Muskingum and Ohio Rivers, it is part of the watershed of the Mississippi River, draining an area of 351 square miles (910 km 2). [3]
The mine can be accessed by boat on Allatoona Lake up Sixes Creek, or by foot into the Corps property tree line marked by red blazes on the trees across from the BridgeMill neighborhood swimming pool. Visiting and gold panning is allowed by the Corps, but only panning with shovels and pans in the stream bed.
Starting in the 1920s, water was brought to the area through the 90-mile (145 km) Davidson Ditch for gold mining. The Goldstream Dredge No. 8 cut a 4.5-mile (7.2 km) track and produced 7.5 million ounces of gold. [2] The dredge was named a Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers in 1986. [2]
Besides placer deposits of gold, and gold bearing quartz in weathered rock, gold also occurs in quartz veins. The most profitable veins, in the Dahlonega District, occur in the contact zone between mica-schists and granite or diorite. [2]: 59–61 The discovery of gold in the Georgia Gold Belt in 1828 led to the Georgia Gold Rush.