©2013 society of economic geologists compilation 7 porphyry copper, gold, and molybdenum deposits: preface editor: david r cooke codes – the australian research council’s centre for excellence in ore deposit research, university of tasmania, private bag 126, hobart, tasmania 7001, australia. Copper is not the only metal that occurs in porphyry deposits there are also porphyry ore deposits mined primarily for molybdenum, many of which contain very little copper examples of porphyry molybdenum deposits are the climax, urad, and henderson deposits in central colorado, and the questa deposit in northern new mexico. Copper is the primary commodity of economic interest in most porphyry copper deposits, although some deposits with low to very low copper grades are mined principally for their gold (for example, çopler, turkey) and(or) molybdenum (for example.
The term “porphyry” comes from the word “porphyritic”, a textural term used by geologists when describing the mineral pattern within the rocks that commonly occur in copper porphyry deposits porphyry copper deposits play an important role in the global economy these deposits provide over 60% of the world’s copper and include other important metals such as molybdenum, gold and silver porphyry copper deposits are known for their low grades and very high tonnage.
Porphyry deposits are one of the most important sources of copper and molybdenum, and are also major sources of silver, gold, and tin in addition, porphyry deposits may host valuable by-products including platinum , palladium , and tungsten. Developing the largest un-mined molybdenum deposit in the world cumoco has discovered one of the largest deposits of molybdenum, copper, silver, tungsten and rhenium in north america near boise, idaho, usa.
Copper skarn deposits occur near many porphyry copper host intru- sions that intruded carbonate-bearing units (einaudi and others, 1981), and skarn mineral zoning patterns may be useful in the targeting of a potentially associated porphyry copper deposit (meinert and others, 2005. The caserones copper and molybdenum deposit in chile features six of the top ten biggest copper mines in the world the caserones copper mine (formerly known as regalito mine, which was acquired by pan pacific copper in march 2006) lies approximately 162km south-east of copiapó in the atacama region of chile and approximately 15km from the.
The zangezur copper-molybdenum complex possesses large molybdenum reserves that are concentrated in the kajaran deposit besides molybdenum, armenia has significant deposits of copper and gold smaller deposits of lead, silver, and zinc and deposits of industrial minerals, including basalt, diatomite, granite, gypsum, limestone, and perlite. The zangezur copper-molybdenum complex possesses large molybdenum reserves that are concentrated in the kajaran deposit besides molybdenum, armenia has significant deposits of copper and gold smaller deposits of lead , silver , and zinc and deposits of industrial minerals, including basalt , diatomite , granite , gypsum , limestone , and perlite.
The copper-molybdenum mine is scheduled to produce 180,000t of copper and 3,000t of molybdenum for the first ten years it is estimated to produce 354 million tonnes of copper and 87,000t of molybdenum during its mine life of 28 years. While copper is generally the dominant metal, porphyry copper deposits can contain multiple accessory metals, such as molybdenum, gold and silver in some cases these “accessory” metals can be a significant or even the dominant economic contributor.