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igneous origin Copper ore deposits

  • Geology of Copper Properties, Mining, and Formation of

    Sep 15, 2019· The deposits that contain the largest quantities of copper are called porphyry deposits, and the process of extracting it usually involves drilling an open pit into a layer of sedimentary rock. How Copper Forms in the Earth. To understand how copper is formed, it helps to look at how porphyry deposits—the largest current sources of copper ore

  • Ore Deposit an overview ScienceDirect Topics

    Magmatic ore deposits may be defined as rocks of igneous origin (see IGNEOUS PROCESSES), which can profitably be mined for their constituent chemical elements.For example, the worth of annual global production from magmatic ore deposits exceeded $10 billion in 2001, and dominates or contributes significantly to world supplies of elements representing more than a third of the periodic table.

  • Tellurium in Igneous-related Epithermal Precious Metal

    Tellurium in Colorado and New Mexico Deposits: It is commonly assumed that most epithermal gold deposits associated with alkaline igneous rocks (deficient in silica with respect to alkalis) are enriched in tellurium, and within Colorado and New Mexico, many deposits are indeed tellurium-rich. However, many known alkalic-related deposits contain

  • On the igneous origin of certain ore deposits

    2 Themineralcontainingthelargestamountofbase,suchasiron,lime ormagnesiafirstseparatesout,thenaseriesofothermineralscontain- inglessbase

  • igneous origin hematite deposits minimaalroyaal.nl

    1 Introduction Magnetite and hematite are common minerals found in a wide variety of igneous, metamorphic, and sedimentary rocks (Dupuis and Beaudoin, 2011)Iron oxides occur in many magmatic-hydrothermal ore deposits as major (eg, iron oxide copper gold ore deposits, banded iron formations) or as accessory minerals (eg, volcanogenic massive

  • Mineral Ore Deposits: Meaning, Origin and Types Geology

    Igneous Deposits: These deposits are formed by crystallisation of magmatic melts in different
  • Sudbury Complex igneous rock body, Canada Britannica

    Other articles where Sudbury Complex is discussed: Precambrian: Layered igneous intrusions: The Sudbury Complex in southern Canada, which is about 1.9 billion years old, is a basin-shaped body that extends up to 60 km (37 miles) across. It consists mostly of layered norite and has deposits of copper, nickel, cobalt, gold, and platinum. It is noted for

  • Mineral resources of igneous and metamorphic origin

    mineral reserves called metallic ore deposits. Metallic ore deposits can form wherever there is igneous activity, due to either vulcanism or plutonism. The metallic ore deposits can be found near sites of recent igneous activity or activity that happened sometime during the geologic past. The types of metals in the deposit depend on the magma

  • Ore genesis Wikipedia

    Ore deposits formed by lateral secretion are formed by metamorphic reactions during shearing, Lode-gold deposits are intimately associated with orogeny and other plate collision events within geologic history. or associated with igneous rocks. The world's major copper deposits are formed within the granitic porphyry copper style.

  • The Origin of Cu/Au Ratios in Porphyry-Type Ore Deposits

    Microanalysis of major and trace elements in sulfide and silicate melt inclusions by laser-ablation inductively coupled plasma mass spectrometry indicates a direct link between a magmatic sulfide liquid and the composition of porphyry-type ore deposits. Copper (Cu), gold (Au), and iron (Fe) are first concentrated in a sulfide melt during magmatic evolution and then released to an ore-forming

  • igneous origin hematite deposits minimaalroyaal.nl

    1 Introduction Magnetite and hematite are common minerals found in a wide variety of igneous, metamorphic, and sedimentary rocks (Dupuis and Beaudoin, 2011)Iron oxides occur in many magmatic-hydrothermal ore deposits as major (eg, iron oxide copper gold ore deposits, banded iron formations) or as accessory minerals (eg, volcanogenic massive

  • Mineral resources of igneous and metamorphic origin

    mineral reserves called metallic ore deposits. Metallic ore deposits can form wherever there is igneous activity, due to either vulcanism or plutonism. The metallic ore deposits can be found near sites of recent igneous activity or activity that happened sometime during the geologic past. The types of metals in the deposit depend on the magma

  • A Plate Tectonic Model for the Origin of Porphyry Copper

    The Origin of Calc-Alkaline Igneous Rocks and Porphyry Copper Deposits l/l/orld Distribution o I Porphyry Ore Deposits Figure 1 shows the location of the majority of ex- ploited porphyry copper and molybdenum deposits, and of many important prospects, which in Figure 2 are related to Mesozoic-Cenozoic orogenic belts and

  • GEOLOGY AND EVOLUTION OF THE COPPER FLAT PORPHYRY

    Nov 04, 2016· The Copper Flat porphyry copper deposit in the northern part of the Hillsboro district was discovered in 1975 (Castellano et al., 1977; Dunn, 1982, 1984), although alteration and mineralization in the area suggested to earlier geologists that a porphyry copper deposit should occur in the district (Kuelmer, 1954).

  • Ore Deposits of Mafic Igneous Rocks

    3. CARBONATITE HOSTED COPPER Ore Deposit Type: Epigenetic discordant irregular Rock Type: Mafic (intrusive or extrusive) Igneous Commodity Class: Copper, Vermiculite, Phosphate, Magnetite (Iron Ore), REE’s Tectonic Setting (formation): 3 Theories: Direct generation by

  • The Platinum Group Element Deposits of the Bushveld

    The ore deposits of the Bushveld Complex are so large that they far exceed the time periods mentioned above. and the Insizwa intrusion and its copper and nickel deposits. His main fields of specialisation are the origin of mafic igneous intrusive rocks and their mineral deposits. He holds a BSc from the University of Durham, UK, a PhD from

  • GMS Copper Basin

    The mining of the Copper Basin ores was a magnet for people to come into the area during the early days. The work was usually steady and supported generations of people. At the same time, the effects of mining and processing were proving to be disastrous not

  • Bornite Mineral Data

    Copper 63.31 % Cu Sulfur 25.56 % S _____ 100.00 % : Empirical Formula: Cu 5 Fe 2+ S 4: Environment: Disseminated in igneous intrusions and a primary and secondary mineral in copper ore veins. IMA Status: Valid Species (Pre-IMA) 1725 : Locality: Cornwall, England and Arizona porphyry copper deposits. Link to MinDat Location Data. Name Origin:

  • AU-AG-TE VEIN DEPOSITS (MODEL 22b; Cox and Bagby, 1986)

    Figure 1. A, Conceptual model for a Au-Te system (based on Cripple Creek, Colo.; Pontius, 1992).Native gold and pyrite-rich disseminated deposits may be lateral or upper level equivalents to vein deposits. B, Vein-related wall-rock alteration ( Thompson and others, 1985 ). References Kelly and Goddard (1969), Witkind (1973), Giles (1983), Mutschler and others (1985), Porter and Ripley (1985),

  • Is copper found in Igneous, Metamorphic or Sedimentary

    Jun 21, 2010· Copper-bearing minerals can be found in deposits hosted in a wide variety of rocks. Most of the world's copper production comes from "porphyry" deposits, which by definition is igneous, but many copper deposits are also sedimentary (eg red beds), metamorphic (eg skarns), and volcanic (eg volcanogenic massive sulfides).

  • The Geology of Rare Earth Elements

    Rare Earth Ore Classification. Classification of ores related to alkaline rocks is also controversial. Table 2 presents a relatively simple classification that follows analogous categories for deposits related to nonalkaline igneous rocks. Some of the more unusual alkaline rocks that host, or are related to, REE ores are carbonatite and phoscorite, igneous rocks composed principally of

  • Pegmatite: Igneous Rock Pictures, Definition & More

    Pegmatite: Pegmatite is an igneous rock composed almost entirely of crystals that are over one centimeter in diameter. The specimen shown here is about two inches (five centimeters) across. Topaz on albite: A crystal of imperial topaz on an albite matrix from a pocket in the Katlang Pegmatite of Pakistan. Specimen is about 4.5 x 3.5 x 3.5 centimeters.

  • Presentation Porphyry Igneous Rock Rock (Geology

    Magmatic-Hydrothermal Ore Deposits. Porphyry Deposits Porphyry deposits are a type of magmatic-hydrothermal deposit and are subduction zone related. They normally host copper (chalcopyrite, bornite), gold (in Cu phases), tin (cassiterite SnO 2), tungsten (wolframite) and molybdenum (molybdenite MnS 2). All porphyries are associated with granites granitic rocks, in particular,

  • Magmatic Ore Deposits in Layered Intrusions—Descriptive

    ore deposits containing most of the world’s economic concentrations of platinum-group elements (PGE) (figs. 1 and 2). These deposits are mined primarily for their platinum, palladium, and rhodium contents (table 1). Magmatic ore deposits are derived from accumulations of crystals of metallic oxides, or

  • A Plate Tectonic Model for the Origin of Porphyry Copper

    The Origin of Calc-Alkaline Igneous Rocks and Porphyry Copper Deposits l/l/orld Distribution o I Porphyry Ore Deposits Figure 1 shows the location of the majority of ex- ploited porphyry copper and molybdenum deposits, and of many important prospects, which in Figure 2 are related to Mesozoic-Cenozoic orogenic belts and

  • Mineral resources of igneous and metamorphic origin

    mineral reserves called metallic ore deposits. Metallic ore deposits can form wherever there is igneous activity, due to either vulcanism or plutonism. The metallic ore deposits can be found near sites of recent igneous activity or activity that happened sometime during the geologic past. The types of metals in the deposit depend on the magma

  • Metallic Deposits CliffsNotes

    These deposits are common in the central United States over relatively stable crust and may be one of the few deposit types not related to some kind of igneous heat source. The ore minerals in most of the world's iron and manganese reserves were chemically precipitated in

  • Presentation Porphyry Igneous Rock Rock (Geology

    Magmatic-Hydrothermal Ore Deposits. Porphyry Deposits Porphyry deposits are a type of magmatic-hydrothermal deposit and are subduction zone related. They normally host copper (chalcopyrite, bornite), gold (in Cu phases), tin (cassiterite SnO 2), tungsten (wolframite) and molybdenum (molybdenite MnS 2). All porphyries are associated with granites granitic rocks, in particular,

  • Wisconsin Geological & Natural History Survey » Copper

    Formula: Cu ISOMETRIC Description: Native copper occurs as veins and cavity fillings in hydrothermally altered basaltic igneous rocks. It is also a product of near-surface supergene alteration of other copper minerals, such as chalcopyrite. Copper can survive weathering, although its surface is often coated with green or black weathering rinds consisting of malachite, azurite, cuprite and

  • Ore deposits related to mafic igneous rocks hosted copper

    Mineralogy • Chalcopyrite (with minor cubanite) is the predominant Cu mineral in the core, especially in the transgressive carbonatite, containing ca. 1% Cu. • Bornite is dominant in the low grade banded carbonatite and foskorite (olivine, magnetite, apatite and phlogopite in variable proportions). • Magnetite (up 4 wt.% TiO 2) makes up 20-25% of the foskorite.

  • Magmatic Ore Deposits in Layered Intrusions—Descriptive

    ore deposits containing most of the world’s economic concentrations of platinum-group elements (PGE) (figs. 1 and 2). These deposits are mined primarily for their platinum, palladium, and rhodium contents (table 1). Magmatic ore deposits are derived from accumulations of crystals of metallic oxides, or

  • Pegmatite: Igneous Rock Pictures, Definition & More

    Pegmatite: Pegmatite is an igneous rock composed almost entirely of crystals that are over one centimeter in diameter. The specimen shown here is about two inches (five centimeters) across. Topaz on albite: A crystal of imperial topaz on an albite matrix from a pocket in the Katlang Pegmatite of Pakistan. Specimen is about 4.5 x 3.5 x 3.5 centimeters.

  • Geology of Gold Mineralization & How Gold Deposits are Formed

    Deposits of this type are mined for the predominant metals, but the gold is also recovered as a byproduct during processing of the ore. Most byproduct gold has come from porphyry deposits, which are so large that even though they contain only a small amount of gold per ton of ore, so much rock is mined that a substantial amount of gold is

  • History of Palabora Palabora Mining Company Ltd

    The company owes its origin to the unique formation known as the Palabora Igneous Complex. Nowhere else is copper known to occur in carbonitites as is the case at Palabora, and a host of other minerals such as phosphates, vermiculite, phlogopite, magnetite, nickel, gold, silver, platinum and palladium also occur.

  • Ore Geology Reviews Journal ScienceDirect by Elsevier

    Genesis of the Bafangshan-Erlihe Zn-Pb-Cu deposit in the Fengxian-Taibai ore cluster, west Qinling, China: Evidence from ore geology and ore-forming fluids. Qiaoqing Hu, Mingshou Chen. In Press, Journal Pre-proof, Available online 20 August 2020 Download PDF.

  • (PDF) Nickel Sulfide Ores and Impact Melts: Origin of the

    The Sudbury mining camp is well known for its world-class Ni-Cu-Co sulfide ore deposits, which are genetically related to the formation of the Sudbury Igneous Complex (Lightfoot and Doherty, 2001

  • 2.4 Iron oxide copper-gold mineral system Geoscience

    Iron oxide copper-gold (IOCG) deposits (Hitzman et al., 1992) are a diverse family of mineral deposits characterised by the following features: (1) Cu with or without Au, as economic metals, (2) hydrothermal ore styles and strong structural controls, (3) abundant magnetite and/or hematite, (4) Fe oxides with Fe/Ti greater than those in most igneous rocks, and (5) no clear spatial associations

  • Ore Minerals : What are Ore Minerals? Geology Page

    Astrobleme-related ores. Sudbury Basin nickel and copper, Ontario, Canada; Ore Extraction. The basic extraction of ore deposits follows these steps: Prospecting or exploration to find and then define the extent and value of ore where it is located (“ore body”) Conduct resource estimation to mathematically estimate the size and grade of the