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Lynch Quarry Site, North Dakota, NRHP-listed and a U.S. National Historic Landmark, a flint quarry that was "a major source of flint found at archaeological sites across North America, and it has been estimated that the material was mined there from 11,000 B.C. to A.D. 1600."
The Hejiakouzi deposit in Tongxin County features a reserve of 20 million tons of gypsum with a total thickness of 100 meters. There is a considerable deposit of quartz sandstone, of which 17 million tons have been ascertained. In addition, there are phosphorus, flint, copper, iron, barite, other minerals and Helan stone – a special clay stone.
Iron oxide copper gold (IOCG) deposits are considered to be metasomatic expressions of large crustal-scale alteration events driven by intrusive activity. The deposit type was first recognised by discovery and study of the supergiant Olympic Dam copper-gold-uranium deposit (Olympic Dam mine), and South American examples.
By 1880, most of the mining had shifted to lode deposits, such as the Empire Mine. Through 1959, the district produced 10.4 million troy ounces (323 tonnes) of lode gold, and 2.2 million troy ounces (68.4 tonnes) of placer gold. [18] The rich placer deposits of the Columbia Basin-Jamestown-Sonora district were found in 1853
If you enjoyed the PC version, there's nothing new here, but if this is your first Diablo experience, you're in for a Hell of a good time." [ 89 ] Diablo won the overall "Game of the Year" awards of Computer Gaming World , GameSpot and Computer Game Entertainment for 1996, [ 90 ] [ 91 ] [ 92 ] and was a runner-up for Computer Games Strategy ...
In nickel and copper deposits, platinum-group metals occur as sulfides (e.g., (Pt,Pd)S), tellurides (e.g., PtBiTe), antimonides (PdSb), and arsenides (e.g. PtAs 2), and as end alloys with nickel or copper. Platinum arsenide, sperrylite (PtAs 2), is a major source of platinum associated with nickel ores in the Sudbury Basin deposit in Ontario ...
How It's Made is a documentary television series that premiered on January 6, 2001, on the Discovery Channel in Canada and Science in the United States. The program is produced in the Canadian province of Quebec by Productions MAJ, Inc. and Productions MAJ 2.
The deposits are manto-type deposits in Permian limestone of the Mina Grande formation, related to an igneous intrusive. Silver minerals include argentite and native silver. Associated minerals include the lead minerals anglesite and galena , the zinc minerals sphalerite , hemimorphite , and smithsonite , and gangue minerals quartz , calcite ...