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dc.date2003
dc.date.accessioned2007-01-03T04:50:44Z
dc.date.accessioned2022-02-03T09:27:47Z
dc.date.available2007-01-03T04:50:44Z
dc.date.available2022-02-03T09:27:47Z
dc.identifierlibimagesFRM2077
dc.identifier.urihttp://hdl.handle.net/11124/7300
dc.descriptionA very aesthetic specimen consisting of sharp tan rhombohedra of ankerite with cubic galena crystals and small crystals of marmatitic sphalerite from the 24-Level exploration decline in the Eagle Mine; 2.1 x 1.5 x 1.2 in.
dc.descriptionCopy of image held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.
dc.descriptionDonor: Front Range Minerals, Golden, CO.
dc.description.abstractThe mineral specimen comes from the Eagle Mine, located near Gilman in the Gilman mining district, Eagle County, Colorado. Rich silver-lead carbonate ores were discovered in the Gilman area around 1879. By the early 1880s a number of the area's mines were producing silver and gold. District production of these metals declined by the 1890s and lead and zinc became the district's primary products by the early 1900s. In 1912 the New Jersey Zinc Company consolidated some of the mines on Battle Mountain into the Eagle Mine, which became Colorado's major zinc producer. The Mine also became known for its attractive mineral specimens. The Eagle was operated by New Jersey Zinc until 1983 when it was purchased by the Battle Mountain Corporation. The Mine was closed in 1984 and subsequently flooded. Because of mine seepage, groundwater contamination and pollution from tailings the area of the Eagle Mine and the town of Gilman was declared a Superfund site in 1986.
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.rightsDigital image copyright owned by Front Range Minerals, Golden, CO.
dc.subjectMineral and rock specimens
dc.subjectZinc mines and mining
dc.titleAnkerite with galena, sphalerite: Colorado, Eagle County, Gilman, Eagle Mine 24-Level
dc.typeStillImage


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