ore type porphyry

ore type porphyry

  • mass transfer model for copper and molybdenum in magmatic

    Feb 1, 1986 A mass transfer model for copper and molybdenum in magmatic hydrothermal systems the origin of porphyrytype ore deposits into a moderately to highly saline aqueous phase that liquidvapor extraction seems to be a reasonable process to account for the concentration of Cu in porphyry Cu deposits.

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  • CHARACTERISTICS OF THE PROTEROZOIC PORPHYRYTYPE

    The Cu mineralization is of a stockwork type comprising a parallel set of nar row, mineralized and often quartzfilled fractures of subvertical dip. The en échelon fractures constitute a zone that crosscuts lithological boundaries. The maximum width of the zone is about 250 m and its length at least 1500 m. The only major ore 

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  • The magma and metal source of giant porphyrytype ore deposits

    Aug 1, 2010 The global supply of Mo and much of Cu and Au comes from porphyrytype ore deposits associated with hydrous magmas of broadly calcalkaline composition, thought to be generated by contemporaneous subduction zone processes. Molybdenum is generally considered to be derived from the continental 

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  • Geology of Porphyry Copper Deposits 911 Metallurgist

    Oct 17, 2017 Understanding Geology of Porphyry Copper Deposits and formations using models around the World. These are somewhat the giants of the ore deposits world. . These alteration types become important in the exploration of porphyry style mineralization as they provide vectors to the mineralization.

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  • ClimaxType Porphyry Molybdenum Deposits USGS Publiions

    associated with Atype granites that formed after peak activity of a magmatic cycle. The deposits consist of ore shells of quartzmolybdenite stockwork veins that lie above and surrounding the apices of cupola like, highly evolved, calcalkaline granite and subvolcanic rhyoliteporphyry bodies. These plutons are invariably 

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  • Everything You Need to Know About Copper Porphyries Infographic

    Mar 11, 2015 Much of today's mineral production depends on porphyries: 60% of copper, 95% of molbdenum, and 20% of gold comes from this deposit type. Large Size, Low Grade – Porphyries typically have 100 million to 5 billion tonnes of ore with a lower grade (0.2% to >1% copper). It is the size of these deposits 

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  • PORPHYRY DEPOSITS Earth Science Australia

    Energy and Minerals An overview of porphyry type mineral deposits. Alteration Mineralisation Theory Conclusion. specimen of porphyry copper ore The country rocks can be any kind of rock, and often there are wide zones of closely fractured and altered rock surrounding the intrusions. As is described following, this 

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  • Descriptive model of Porphyry Au

    RELATIVE IMPORTANCE: A newly recognized type of deposit containing large tonnages of lowgrade gold ore. DESCRIPTIVE/GENETIC SYNOPSIS: Au is present in a stockwork of quartz veinlets within subvolcanic diorite, tonalite, and dacite porphyry emplaced in the core or flank of a stratovolcano. Potassic (biotite) and 

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  • High Sulfidation and Low Sulfidation Porphyry Copper/Skarn Systems

    Here I focus on transitions between ore types in porphyry copper systems and use the the sulfidation state of hydrothermal fluids as a framework. I adopt the sulfidation state as a means of classifiion of oreforming environments because this variable spans all deposit types and is independent of host rocks, metals 

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  • The Origin of Cu/Au Ratios in PorphyryType Ore Deposits Science

    Abstract. Microanalysis of major and trace elements in sulfide and silie melt inclusions by laserablation inductively coupled plasma mass spectrometry indies a direct link between a magmatic sulfide liquid and the composition of porphyrytype ore deposits. Copper (Cu), gold (Au), and iron (Fe) are first concentrated in 

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  • Geological Survey of Finland Geologian tutkimuskeskus

    temperature range between 200° and 800°C, and the principal ore deposition at 200° to. 400°C in specific areas where phase transforma tion occurs in the solutions. Mineralizing solu tions were invariably enriched in Cl, Fand. CO2 in individual occurrences. Principal deposition of Mo in Climaxtype porphyry molybdenum 

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  • Porphyrytype ore deposits: origins, fertility indiors and YouTube

    Dec 5, 2017 Jamie Wilkinson, Natural History Museum It is more than 10years since the last detailed look at the role that volcanic and magmatic processes play in the ro

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  • Oreforming granites from Jurassic porphyry Mo deposits, east

    The east–central part of Jilin Province, NE China, hosts an important polymetallic metallogenic district that contains more than 10 recently discovered large, medium, and smallscale Mo deposits. The Mo deposits in this area include porphyry, skarn, and quartz veintype mineralization, of which the porphyrytype deposits 

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  • Stochastic modelling of deep magmatic controls on porphyry copper

    Mar 15, 2017 It is widely accepted that copper in porphyrytype deposits is transported and precipitated by fluids extracted from these magmas. .. This is suggested by data on Cu endowment and overall duration of the ore deposition period for different deposits (Supplementary Information 1, Table S1.1). Here, the 

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  • Tempo of magma degassing and the genesis of porphyry copper

    Jan 12, 2017 Porphyry deposits are copperrich orebodies formed by precipitation of metal sulphides from hydrothermal fluids released from magmatic intrusions that cooled Pettke T., Oberli F. & Heinrich C. A. The magma and metal source of giant porphyrytype ore deposits, based on lead isotope microanalysis of 

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  • Preliminary Model of Porphyry Copper Deposits USGS

    e that the deep melt reservoirs from which both the shallow intrusions and the ore fluids were derived may be compositionally calcalkaline, alkalicalcic, or alkaline (Seedorff and others, 2005). Representative examples of the rock types found in porphyry copper deposits are listed in table 1. Relations to Sedimentary 

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  • Porphyry Cu deposits

    1 Cordilleran Porphyry Cu type: Which are associated with quartz monzonites and granodiorites (rocks with 55 70 weight % SiO2). This type is characterized by large tonnages of ore (100 2000 million tonnes), and grades of 0.45 1.2 % Cu, 0.01 0.03 % Mo. Examples: ElSalvador and Chiquicamata in Chile, Bingham, 

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  • Hydrothermal alteration at the Haib porphyry copper deposit, Namibia

    of copper deposit, the socalled porphyrytype, that is estimated to contain nearly 50% of the worlds' pre served of this strategic metal (Gustafson, 1978 Guil bert and Park, 1986). Estimated preserved of the Haib deposit are about one billion tonnes of very low grade copper ore (~0.1 0.2 % Cu), with traces of Mo and Au.

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  • The magma and metal source of giant porphyrytype ore deposits

    Aug 1, 2010 The global supply of Mo and much of Cu and Au comes from porphyrytype ore deposits associated with hydrous magmas of broadly calcalkaline composition, thought to be generated by contemporaneous subduction zone processes. Molybdenum is generally considered to be derived from the continental 

    >>Details
  • Porphyry ore body zonality for the mine planning in Aaltodoc

    Aug 11, 2014 Mikheevskoye project is a porphyry CuMo open pit mine loed in Chelyabinsk region,. Russia. Ore Keywords porphyry ore, geometallurgy, mineral processing, copper, Russia, hydrothermal limitations and is seen by the mining department as an ore type suitable for the input into the process and 

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  • Porphyry copper deposit Wikipedia

    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, 

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  • Porphyrytype mineralization and alteration in the Organ mining

    study area, dates back to the early 1830's and possibly as far back as the 1770's (Eveleth, 1983). Lead, zinc, copper, silver, and minor amounts of gold were the principal metals mined from several high grade deposits adjacent to the porphyrytype mineralization. Most of this ore was mined during three periods: 1900 to 

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  • Precious Metal Mineralogy in Porphyry, Skarn GeoScienceWorld

    92, 1997, pp. 535550. Precious Metal Mineralogy in Porphyry, Skarn, and ReplacementType Ore Deposits of the Ertsberg (Gunung Bijih) District, Irian Jaya, Indonesia*. JEFFREY N. RUBIN** AND J. RICHARD KYLE i. Department of Geological Sciences, University of Texas at Austin, Austin, Texas 787121101. Abstract.

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  • The genesis of Climaxtype porphyry Mo deposits: Insights from fluid

    Porphyry molybdenum deposits represent largescale mineralization in the form of veins, stockworks, fractures, disseminations and/or breccias that are spatially and genetically related to felsic, porphyritic intrusions, which contain Mo grades of >0.05 wt% and Mo/Curatios >1 (Carten et al., 1993). This type of ore deposit 

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  • Tempo of magma degassing and the genesis of porphyry copper

    Jan 12, 2017 Porphyry deposits are copperrich orebodies formed by precipitation of metal sulphides from hydrothermal fluids released from magmatic intrusions that cooled Pettke T., Oberli F. & Heinrich C. A. The magma and metal source of giant porphyrytype ore deposits, based on lead isotope microanalysis of 

    >>Details
  • Porphyry copper deposit Wikipedia

    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, 

    >>Details
  • The genesis of Climaxtype porphyry Mo deposits: Insights from fluid

    Porphyry molybdenum deposits represent largescale mineralization in the form of veins, stockworks, fractures, disseminations and/or breccias that are spatially and genetically related to felsic, porphyritic intrusions, which contain Mo grades of >0.05 wt% and Mo/Curatios >1 (Carten et al., 1993). This type of ore deposit 

    >>Details
  • Everything You Need to Know About Copper Porphyries Infographic

    Mar 11, 2015 Much of today's mineral production depends on porphyries: 60% of copper, 95% of molbdenum, and 20% of gold comes from this deposit type. Large Size, Low Grade – Porphyries typically have 100 million to 5 billion tonnes of ore with a lower grade (0.2% to >1% copper). It is the size of these deposits 

    >>Details
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