• Sierra Gorda CopperMolybdenum Mine May Not Need Support ...

     · Polish copper producer KGHM said that its Sierra Gorda coppermolybdenum mine in Chile may no longer need financial support from next year, despite the coronavirusrelated risks, the mine posted a 150% leap in secondquarter core profit. The Sierra Gorda mine is loed in Chile in the Atacama Desert in the Antofagasta region, approximately 60 km southwest of the .

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  • Petrographic, Geochronology, and Geochemical Analyses of ...

    Harris Ranch quartz monzonite, BQD, Ruby Star GD, Esperanza QMP, and the West Sierrita QMP. The style of mineralization is that of a porphyry CopperMolybdenum system, copper as the principal mineral and moly as a byproduct from milling. In the hypogene environment, the type of mineralization is predominantly CuMo veining. Early in the ...

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  • FMI announces shutdown of Sierrita mine | Local News ...

     · In 2014, Sierrita produced 195 million pounds of copper and 24 million pounds of molybdenum. In the first nine months of 2015, Sierrita produced 140 million pounds of copper and 17 million pounds ...

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  • copper molybdenum plant

    Sierra Gorda CopperMolybdenum Mine Project, Chile. The processing plant consists of: primary, secondary, and tertiary crushing with highpressure grinding rolls (HPGRs); ball milling and conventional flotation to produce a bulk coppermolybdenum concentrate; train transport of bulk copper concentrate to the Port of Mejillones for loading into ships; and train transport of bagged molybdenum .

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  • Nature, origin and evolution of the granitoidhosted early ...

    At Malanjkhand, Central India, lodetype copper (molybdenum) mineralization occurs within calcalkaline tonalitegranodiorite plutonic rocks of early Proterozoic age. The bulk of the mineralization occurs in sheeted quartzsulfide veins, and Ksilie alteration assemblages, defined by alkali feldspar (Kfeldspar ≫ albite) + dusty hematite in feldspar ± biotite ± muscovite, are .

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  • Cyprus Amax Minerals Company Company History

    High copper and molybdenum prices led to 1988 earnings of 170 million ( a share) on sales of billion. There were, however, two setbacks. Cyprus Gold was hurt by startup problems, and coal profits fell to million due to reduced contract prices and a million charge for closing three Kentucky mines. In 1989 copper prices remained high, and copper production grew 28 .

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  • FreeportMcMoRan Sierrita, Inc. Tailings Dam Dust Control ...

    processes, approximately 5 pounds of copper and ½ of a pound of molybdenum are recovered into about 20 lbs of material. The remaining 1980 pounds of ground rock material is referred to as tailings. Tailings slurry gravity flows from the concentrator at about 25,000 gallons per minute and 50 percent solids by weight through a 42inch pipeline to the Sierrita Tailings Dam. The tailings .

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  • FreeportMcMoRan Inc.

     · FreeportMcMoRan Copper Gold Inc. (NYSE: FCX) announced today in response to the recent sharp decline in molybdenum prices plans to reduce production from its Henderson primary molybdenum mine and to defer the restart of the Climax molybdenum mine. Molybdenum markets have been strong in recent years, averaging 30 per pound in 2007 and 33 per pound .

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  • 2017 Minerals Yearbook

    The Sierrita operation of FCX included a 100,000t/d concentrator that produced copper and molybdenum concentrates. Sierrita also had molybdenum facilities consisting of a leaching circuit, two molybdenum roasters, and a packaging facility. The molybdenum facilities processed concentrate from Sierrita, other FCX mines, and thirdparty sources ...

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  • Sierra Metals Inc.

     · Sierra Metals Confirms Porphyry Mineralization at Its Yauricocha Mine in Peru, Positive Results Include 22 Meters Of % Copper and 134 Ppm Molybdenum and PPM Cobalt October 1, 2018 Download PDF Format (opens in new window) PDF

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  • Amarc Resources Ltd. | Amarc Drilling Continues to ...

    The five very widelyspaced drill holes, were designed to continue to delineate the copper, molybdenum, silver grade distribution within the overall km by 2 km mineralized system discovered at IKE. The new drill results continue to indie that IKE shares many geological similarities with some of the world's important coppermolybdenumsilver deposits, like Sierrita .

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  • Molybdenum Minerals Sierra Leone

    Molybdenum Minerals Sierra Leone. Molybdenum resources around the world are mainly associated with porphyry copper ores molybdenite mos2 is the main mo mineral that has rhenium in its crystal lattice this paper investigates the recovery of rhenium and molybdenum from a molybdenite concentrate using a

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  • Sierra Gorda coppermolybdenum mine may not proceed to ...

     · Sierra Gorda coppermolybdenum mine may not proceed to phase 2 as KGHM revises strategy Polandheadquartered miner KGHM has decided to carry out a "fundamental revision" of its strategy out to 2020, including its plans for the Sierra Gorda coppermolybdenum mine in Chile. It will carry out the strategy revision over the next nine months and expects to .

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  • May 16, 2011 Sumitomo Corporation Participating ...

    Outline of Sierra Gorda copper mine project 1) Loion Loed in the Region 2of the Republic of Chile Produced copper concentrates will be transported to the port of Mellijones by existing railway and shipped from the port . 2) CAPEX Approximately billion US dollars (Initial CAPEX. Expansion of milling ore capacity from 110 thousand tonnes per day to 190 thousand tonnes per day is ...

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  • GoldDistribution of Gold in Porphyry Copper Deposits

    porphyry coppermolybdenum deposits (PCDMo)(typified GoldDistribution of Gold in Porphyry Copper Deposits C1 . by SierritaEsperanza, Ariz.). The classifiion (following Kesler, 1973) is .

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  • Major CopperMolybdenum Porphyry Systems, Southwestern USA

    Major CopperMolybdenum Porphyry Systems, Southwestern USA. GUIDEBOOK SERIES OF THE SOCIETY OF ECONOMIC GEOLOGISTS, INC. Guidebook 48 Print ISSN ISBN CDROM ISSN ISBN Online ISSN ISBN Digital version (on CDROM or as a pdf file) available from Society of .

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  • FreeportMcMoRan Inc.

     · North America Copper Mines. FCX operates six openpit copper mines in North America (Morenci, Bagdad, Sierrita and Safford in Arizona and Chino and Tyrone in New Mexico). Byproduct molybdenum is produced primarily at Sierrita and Bagdad. The North America copper mining operations have longlived reserves with significant additional development ...

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