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Porphyry copper deposits represent an important resource and the dominant source of copper that is mined today to satisfy global demand. [6] Via compilation of geological data, it has been found that the majority of porphyry deposits are Phanerozoic in age and were emplaced at depths of approximately 1 to 6 kilometres with vertical thicknesses on average of 2 kilometres. [6]
The Robinson Mine is a porphyry copper deposit located at Ruth, White Pine County, Nevada, in the Egan Range, 4 miles (6.4 km) west of Ely.The mine comprises three large open pits: Liberty, Tripp-Veteran and Ruth.
Porphyry deposits account for most of the copper and molybdenum world production, 60 and 95 percent of its supply respectively. [1] Porphyry-type ore deposits form in hydrothermal fluid circulation systems developed above and around high-level, subvolcanic felsic to intermediate magma chambers and/or cooling plutons. The ore is temporally and ...
Copper is produced from two large open-pit porphyry copper operations in Grant County: the Chino Mine and the Tyrone mine. Both mines are owned and operated by Freeport-McMoRan . In 2007, the two mines produced 249 million pounds (113 thousand tonnes) of copper, as well as 13 thousand ounces of gold and 209 thousand ounces of silver.
It is the largest undeveloped gold deposit in Canada and one of the world's biggest copper-gold porphyry deposits. [5] [6] Though 2P reserves are significant (39 million ounces of gold, 214 million ounces of silver, 9.9 billion pounds of copper and 257 million pounds of molybdenum) they only represent about 65% of the mine's total resource of ...
Bornite is an important copper ore mineral and occurs widely in porphyry copper deposits along with the more common chalcopyrite.Chalcopyrite and bornite are both typically replaced by chalcocite and covellite in the supergene enrichment zone of copper deposits.
The Chino Mine ("Chino" is Spanish for the "Chinese"), also known as the Santa Rita mine or Santa Rita del Cobre, is an American open-pit porphyry copper mine located in the town of Santa Rita, New Mexico 15 miles (24 km) east of Silver City.
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.