Ore genesis with igneous rocks. The world's major copper deposits are formed within the granitic porphyry copper style. Copper is enriched by processes during crystallisation of the granite and forms as chalcopyrite — a sulfide mineral, which is carried up with the granite. Sometimes granites erupt to surface as volcanoes, and copper mineralisation forms during this phase when the granite and volcanic rocks cool via hydrothermal circulation. Sedimentary copper forms within ocean basins in sedimentary rocks. Generally this forms by brine from deeply buried sediments discharging into the deep sea, and precipitating copper and often lead and zinc sulfides directly onto the
Thicketty Mountain Ore Pits (38CK74) Thicketty Mountain Ore Pits (38CK74) Thicketty Mountain Ore Pits (38CK74) is a historic archaeological site located near Shady Grove Church, Cherokee County, South Carolina. The site includes iron ore pits associated with the South Carolina Manufacturing Company, a major iron manufacturing company that operated in Spartanburg County between about 1825 and about 1850. The iron ore pits or surface mines cover several forested acres along a gently sloping ridge and are generally depressions about two to three meters deep and about five to ten meters across. The pits were last operational in the 1850s. It was listed in the National