fe skarn deposits model d cox

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National mineral assessment tract PC03 (Skarn Cu) - USGS

Although no significant deposits of this type are known in the tract, the region is permissive in terms of the overall geologic environment. Since no clear examples are known and since carbonate rocks make up a small proportion of the terrane intruded by plutons, it seemed most …

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Multisourced metals enriched by magmatic-hydrothermal ...

These deposits predominantly consist of massive ores of chalcopyrite and pyrite, with gold-bearing pyrite-quartz stockworks. A unique feature of these stratabound deposits is the ubiquitous presence of colloform pyrite (Gu et al., 2007), and their close spatial association with Early Cretaceous magmatic-porphyry-skarn systems .

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Kenai quadrangle Alaska Resource Data File - USGS

Alaska Resource Data File This report is preliminary and has not been reviewed for conformity with U.S. Geologi- ... Deposit model: Fe skarn (Cox and Singer, 1986; model 18d) Deposit model number (After Cox and Singer, 1986 or Bliss, 1992): 18d Production Status: No

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Porphyry copper deposit - Wikipedia

Dennis P. Cox, 1986, "Descriptive model of porphyry Cu," in Mineral Deposit Models, US Geological Survey, Bulletin 1693, p. 76, 79. Michael L. Zientek, et al., 2013, Porphyry copper assessment of Southeast Asia and Melanesia, US Geological Survey, Scientific Investigations Report 2010-5090-D.

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The role of magmas in the formation of hydrothermal ore ...

Mineralogy, Fluid Inclusion, and Stable Isotope Studies of the Chengchao Deposit, Hubei Province, Eastern China: Implications for the Formation of High-Grade Fe Skarn Deposits Wei Li, Guiqing Xie

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Genetic relationships between skarn ore deposits and ...

In addition to Fe, Si and Mg, substantial amounts of Cu, along with volatile components such as H 2 S and CO 2 were added to the skarn system. Skarn mineralogy and geochemistry of the igneous rocks indicate an island arc or subduction-related origin of the Fe-Cu skarn deposit.

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Initial geometry and paleoflow reconstruction of the ...

This province has a substantial mining potential for Fe-(Cu) skarn, Cu-Ni and V-Ti orthomagmatic deposits, and orogenic Au lodes. Recent publication dates the Yamansu deposit at 323 Ma, and uses this deposit to define a model of Submarine Volcanogenic Iron Oxide (SVIO) deposits (Hou et …

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A tectono-genetic model for porphyry-skarn-stratabound Cu ...

A tectono-genetic model for porphyry-skarn-stratabound Cu-Au-Mo-Fe and magnetite-apatite deposits along the Middle-Lower Yangtze River Valley, Eastern China. J. Mao, G. Xie, C. Duan, Franco Pirajno, D. Ishiyama, Y. Chen. Research output: Contribution to journal › Article.

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Mineral grades: an important indicator for environmental ...

Cox DP (1992) Descriptive model of Fe skarn deposits. In: Cox DP, Singer DA (eds) Mineral deposit models, vol 1693. U.S. Geological Survey Bulletin, pp 94–97 Google Scholar. Mosier DL (1992a) Grade and tonnage model of volcanic-hosted magnetite. In: Cox DP, Singer DA (eds) Mineral deposit …

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Tieshan Fe-Cu deposit (Daye iron mine), Tieshan District ...

Tieshan Fe-Cu deposit (Daye iron mine), Tieshan District, Huangshi, Hubei, China : Skarn-type Fe-Cu-(Co) deposit, worked from several large open pits. The property encompasses an area of 11.83 square kilometers and includes six lenticular or podiform ore bodies (from east to west: ...

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Mineral Deposits Mineral Systems and Mineralising Events ...

The most widely adopted, especially for resource assessments, is the mineral deposit models classification of Cox and Singer (1992) published by the USGS, which includes grade and tonnage models. A modified version of these mineral deposit models for Australia's major mineral deposit types is available on the Australian Mines Atlas.

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Mineralogy and geochemistry of the Madison Gold skarn ...

Madison Gold skarn deposit Historic Broadway Mine, Silver Star •1880's to 1950's ... Prograde skarn heat Fe, Si garnet -diopside hedenbergite marble Unaltered intrusion Ca mass transfer exoskarn Ca Al, Mg oskarn ... Hypogene Oxidation Model Water Table …

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Zhaoshan Chang - Department of Geology and Geological ...

FE-SEM Laboratory; Fluid Inclusion and CL Laboratory ... J., Lai, Y., and Huizenga, J-M., 2017, Composition and evolution of fluids forming the Baiyinnuo'er Zn-Pb skarn deposit, NE China: insights from laser ablation ICP-MS study of ... and Meinert, L.D., 2015, A model for the intrusive sequence and Cu-Zn skarn formation at the Antamina ...

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British Columbia Mineral Deposit Profiles

mineral deposit profiles which are only available online. We welcome comments and criticisms of the deposit profiles. Background "An ore deposit model is a conceptual and/or empirical standard, embodying both the descriptive features of the deposit type, and an explanation of these features in terms of geological processes." Hodgson, 1993

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Types of Ore Deposits - Molly Marie Prospect

LIST OF ORE DEPOSIT TYPES PORPHYRY BASE METAL-MOLYBDENUM-GOLD SYSTEMS A. Porphyry-Hosted 1. Porphyry Molybdenum Systems a. Low Fluorine Type - Examples: Boss Mountain, Endako, Hall, Kitsault, Thompson Creek

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Types of Ore Deposits - Molly Marie Prospect

LIST OF ORE DEPOSIT TYPES PORPHYRY BASE METAL-MOLYBDENUM-GOLD SYSTEMS A. Porphyry-Hosted 1. Porphyry Molybdenum Systems a. Low Fluorine Type - Examples: Boss Mountain, Endako, Hall, Kitsault, Thompson Creek

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Footprints of Fe-oxide(-Cu-Au) systems

Recognizing footprints of Fe-oxide(-Cu-Au) ("IOCG") mineralization depends on the perspective that the beholder has on the nature and origin of these deposits. This follows from the fact that no simple descriptive model can adequately capture the diversity of the systems that are included in this family (any more than for epithermal deposits or ...

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Mary Kathleen metamorphic‐hydrothermal uranium — rare ...

Mary Kathleen metamorphic‐hydrothermal uranium — rare‐earth element deposit: Ore genesis and numerical model of coupled deformation and fluid flow ... or shear fractures during coupling of the competent skarn host with the late‐D 2 Mary ... of ore by conversion of Fe 2+ ‐rich clinopyroxene‐rich skarn host to Fe 3+ ‐rich secondary ...

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National mineral assessment tract GB03 (Skarn Cu)

Large parts of the permissive tract are covered, and, for the 90th, 50th, 10th, 5th, and 1st percentiles, the team estimated 0, 1, 2, 4, and 6 deposits consistent with the grade and tonnage model for Cu skarn deposits of Cox and Theodore (1968).

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Gold-bearing skarns

In recent years, a significant proportion of the mining industry's interest has been centered on discovery of gold deposits; this includes discovery of additional deposits where gold occurs in skarn, such as at Fortitude, Nevada, and at Red Dome, Australia. Under the classification of Au-bearing skarns, we have modeled these and similar gold-rich deposits that have a gold grade of at least 1 g ...

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(PDF) A Field Guide to the Ore Deposits of NE Greece ...

They are often bound to fracture zones, which acted as pathways for the mineralizing fluids. The ore deposits are genetically associated with volcanic-intrusive granitic to granodioritic magmas and are characterized by Pb-Zn, Sb, Bi, Cu and Mo deposits, as well as smaller Fe and Sn and minor Au, Ag, U, W, Hg, and As occurrences.

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Paleozoic Epithermal Au and Porphyry Cu Deposits in North ...

West Tianshan, there occur several medium-size skarn-porphyry Cu deposits, i.e., the Lailisigaer porphyry Mo-Cu deposit, the Lamasu skarn-porphyry Cu deposit and the Kendenggaor skarn Cu deposit, consisting a very potential skarn-porphyry ore belt. It is suggested to be linked up with East Tianshan porphyry Cu ore belt in the east.

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Did the massive magnetite "lava flows" of El Laco (Chile ...

The El Laco magnetite deposits consist of more than 98 % magnetite but show field textures remarkably similar to mafic lava flows. Therefore, it has long been suggested that they represent a rare example of an effusive Fe oxide liquid. Field and petrographic evidence, however, suggest that the magnetite deposits represent replacement of andesite flows and that the textures are pseudomorphs.

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Depósitos Tipo Skarn

caja iniciando la formación de un skarn de alta temperatura (700-600ºC). •Fase de enfriamiento (450-300ºC) donde se precipitan los sulfuros y algunos óxidos. •Por percolación de aguas meteóricas se puede producir alteración en algunos minerales (fase de enriquecimiento supergénico) •El exoskarn se forma en las rocas sedimentarias

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Metallogenic Model of the Trepca Pb-Zn-Ag Skarn Deposit ...

Metallogenic Model of the Trepcˇa Pb-Zn-Ag Skarn Deposit, Kosovo: Evidence from Fluid Inclusions, Rare Earth Elements, and Stable Isotope Data SABINA STRMIC´ PALINKAŠ,1,† LADISLAV A. PALINKAŠ,1 CHRISTOPHE RENAC,2 JORGE E. SPANGENBERG,3 VOLKER LÜDERS,4 FERENC MOLNAR,5 AND GANI MALIQI6 1 Institute ... Ca-Fe garnets (andradite) occur rarely ...

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Preliminary Model of Porphyry Copper Deposits

Preliminary Model of Porphyry Copper Deposits Byron R. Berger, Robert A. Ayuso, Jeff C. Wynn, and Robert R. Seal Introduction Porphyry copper deposits result from the complex interactions and feedbacks of many processes. Owing to the complexity, a succinct definition that includes the essential attributes of this deposit class is elusive.

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A comparative study of fuzzy weights of evidence and ...

This is coincident with the skarn-type Fe deposit mineral model in the SFMB. The unstable performance experienced when FORMATION was omitted might indicate that the highest uncertainty and risk in follow-up exploration is related to the sequences. In addition, the performance of the RF method for the skarn-type Fe deposits prospectivity in the ...

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Tieshan Fe-Cu deposit (Daye iron mine), Tieshan District ...

Tieshan Fe-Cu deposit (Daye iron mine), Tieshan District, Huangshi, Hubei, China : Skarn-type Fe-Cu-(Co) deposit, worked from several large open pits. The property encompasses an area of 11.83 square kilometers and includes six lenticular or podiform ore bodies (from east to west: ...

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MINERALS PROSPECTIVITY ASSESSMENT: PROPOSED …

MINERALS PROSPECTIVITY ASSESSMENT: PROPOSED RESERVE AREAS FOR INDEPENDENT VERIFICATION GROUP Ross Large and Andrew McNeil 24 February, 2012 ... (Fe 3 O 4) lenses (called skarn) hosted in mafic volcanics and ... define the area in which a mineral deposit model …

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Iliamna quadrangle Alaska Resource Data File - USGS

Alaska Resource Data File ... Deposit model: Placer gold (Cox and Singer, 1986; model 39a). Deposit model number (After Cox and Singer, 1986 or Bliss, 1992): ... The 37 Skarn deposit was discovered in 2002 and has been explored mainly by a few drill holes and by geochemical (soil) and geophysical surveys. The deposit is open to the

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