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geological features of au ag pb zn cu and co ore

Behavior of Metals (Pb, Zn, As, Mo, Cu) During Crystallization and ...

During ascent and degassing of these magmas, some metals (e.g. Au, Ag, As, Pb, Zn, Cu, Hg, Sb, Sn, W, Mo) partition from the melt into a magmatic vapor phase (herein referring to a low-density aqueous solution with <25 wt % Cl; equivalent to a supercritical fluid under the appropriate conditions) and/or a hydrosaline fluid (>25 wt % Cl; Webster ...

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John N Aleinikoff | U.S. Geological Survey

Scientist Emeritus. Phone. 303-236-7884. 0000-0003-3494-6841. Box 25046 MS 973, Denver Federal Center. Denver, CO 80225-0046. United States. John Aleinikoff is a Scientist Emeritus with the Geology, Geophysics, and Geochemistry Science Center.

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(PDF) Ore and Gangue Minerals of the Hera Au-Pb-Zn-Ag Deposit, Cobar ...

2013 and production began in late 2014 (McKinnon, 2017). The deposit currently has a total estimated mineral resource of 2.93 Mt grading at 2.8g/t Au, 2.6% Pb, 3.8% Zn, and 24g/t Ag (Aurelia Metals, 2017). There are seven known ore lenses within the deposit

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Resource Geology: Vol 71, No 4 - Wiley Online Library

The Hera distal Au-Pb-Zn-Ag skarn is a recently discovered and newly described ore body in the Cobar Basin of New South Wales, Australia. We present ore body characteristics, mineral chemistry, stable isotope data, and hydrothermal mineral geochronology to support the skarn interpretation.

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Baoshandong Pb-Zn-Ag deposit (Baoshan East Pb-Zn-Ag deposit), Baoshan ...

Baoshandong Pb-Zn-Ag deposit (Baoshan East Pb-Zn-Ag deposit), Baoshan ore field (Baoshan Mine), Guiyang Co., Chenzhou, Hunan, China : Skarn-type lead-zinc-silver deposit in the eastern part of the ore field. ... (1992): Discussion: the geological and geochemical features as well as the form mechanism of Pb-Zn-Ag deposits in Baoshanxi. Geology ...

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Cu, Zn, Pb, and Ag Deposits | ScienceDirect

Concerns cover types of orebodies, structures of the Zambian Copperbelt, geology of representative deposits, general geological features, and lithostratigraphical relations of the ores. The manuscript takes a look at the McArthur zinc-lead-silver deposits, Appalachian zinc-lead deposits, and tri-state ore deposits.

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Precious-and Base-Metal Mineralization in the Portions of St ... - USGS

A pronounced zona­ tion is evident: Pb, Zn, and Co occur in the northern part of the anomaly, Ag and the remainder of the base metals occur in the central part, and gold in the central and southern parts. Min­ eralization is restricted primarily to the felsic volcaniclastic units in this area.

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Saïd Ilmen - Assistant Professor of Economic Geology - Faculté ...

The Cu, Pb, Zn, Ag-Au deposit of Amensif is located on the northern flank of the western High Atlas. This deposit is hosted in Lower Cambrian carbonate bars and is structurally controlled by NE-SW...

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Shuikoushan Mine, Shuikoushan ore field, Changning Co., Hengyang, Hunan ...

Hanhui Yin, Xilin Li, Cimei Yu, and Guoxin Zhang (1980): Geological features of two types of Pb-Zn deposits in South China. Geology and Prospecting 16(8), 1-6 (in Chinese). Haoming Li (1983): The characteristics of fracture mineralization of lead-zinc and its genesis in the Late Palaeozoic carbonate rocks in southern Hunan.

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Southern Continues to Extend Mina La Bocona High-Grade with 7. ... - Yahoo!

a 4.2 metre interval (2.4 metre est. TT) averaging 335g/t Ag, 0.2g/t Au, 0.3% Cu, 5.3% Pb and 2.4% Zn (638g/t AgEq) including a 1.4 metre interval (0.8 metre est. TT) averaging 636g/t Ag, 0.4g/t...

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Genesis of the Longmendian Ag-Pb-Zn Deposit in Henan ... - Hindawi

Although ca. 1888 Ma molybdenite Re-Os isochron age was obtained, the existence of molybdenite in the Pb-Zn-Ag-quartz veins has not been confirmed, and thus, the Paleoproterozoic age may reflect an earlier mineralization phase before the Ag-Pb-Zn vein-type mineralization. The ore deposit geology (wallrock, ore-controlling structure) and ore ...

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Textural and LA-ICP-MS trace element chemistry analysis of pyrite and ...

Subsequent deformation-induced grain-scale remobilisation of Au, Ag, Bi, Te, Cu, Sn, Co, Tl, Pb and As is common to all pyrite generations, explaining the heterogeneity observed within the trace element data. Compared to previous studies, a greater geochemical complexity is evident in the data

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Geology of the Modoc Pb-Ag-Zn District, Inyo County, California

Structurally controlled Pb-Ag-Zn ore of the district is in marble of Devonian and Mississippian ages; whereas, silty limestone of Pennsylvanian and Permian ages appear unfavorable for ore development. The ore bodies are small but high grade. Argentiferous galena with exsolution blebs of tetrahedrite are the principal primary ore minerals.

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Metallogeny - KPMM

It is characterised by opening, development of island arcs and microplates, closing, welding of microplates with Eurasia, subduction of oceanic crusts, as well as collision of continents, continent-island arc collisions and underthrusting of continental crusts.

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The Hera orebody: A complex distal (Au-Zn-Pb-Ag-Cu) skarn in the Cobar ...

Jun 9, 2021The Hera Au-Pb-Zn-Ag deposit in the southeastern Cobar Basin of central New South Wales preserves calc-silicate veins and remnant sandstone/carbonate-hosted skarn within a reduced anchizonal Siluro-Devonian turbidite sequence.

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Minerals | Free Full-Text | Occurrence Characteristics of Magnetite and ...

The soil geochemistry profiles were produced on the main profile, which is the same as ground magnetic and electrical profile. The sampling points are consistent with the points of ground magnetic profile. A total of 11 elements from the samples were analyzed including Au, Ag, As, Sb, Cu, Pb, Zn, W, Mo, Bi, and Sn.

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Origin and K-Ar age of the phreatomagmatic breccia at the Trepča Pb-Zn ...

Syn-ore and post-ore carbonates reflect the diminishing influence of magmatic CO 2 Syn-ore carbonates are enriched in Fe, Mg, Mn, many chalcophile elements, including Ag, As, Bi, Cd, Cu, Pb, Sb and Zn, as well as in Au, Y and REE. The post-ore stage accompanied

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Helicopter EM (ZTEM-VTEM) Survey Results over the Nuqrah Cu-Pb- Zn-Au ...

The Nuqrah Sedex cu-pb-zn-au deposit, deposit comprises two mineralized bodies (North and South) that are north- ... 332 g/t Ag, 0.75% Cu, 1.22% Pb and 6.0% Zn; Nuqrah South 1.0Mt deposit averages 4.3 g/t Au, 220 g/t Ag, 0.82% ... cross-cutting geologic features. Figure 2b presents the VTEM and ZTEM line locations, and showing how the geology ...

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Department of The Interior Descriptive and Grade-tonnage Models for ...

U.S. GEOLOGICAL SURVEY DESCRIPTIVE AND GRADE-TONNAGE MODELS FOR DISTAL DISSEMINATED Ag-Au DEPOSITS: A SUPPLEMENT TO U.S. GEOLOGICAL SURVEY BULLETIN 1693 By Dennis P. Cox and Donald A. Singer Open-File Report 90-282 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards.

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Geology and Evolution of The Copper Flat Porphyry System, Sierra County ...

The CFQM porphyry-copper deposit forms the center of mineralization and is characterized by Cu, Mo, and minor Au (McLemore et al., 1999) and depleted in Ag, As, Pb, Zn, Ba, Bi, Mn, and V. Trending outward radially from the CFQM are Laramide Au-Ag-Cu veins hosted by many of the latite and quartz latite dikes.

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Geochemical Characterization of Magnetite and Geological Setting of the ...

The ore field hosts Pb- (Ag) -Zn- (Fe) epithermal deposits of the vein and stockwork type, and manto‐type deposits at depth replacing marbles from the Nevado Filábride Complex (Figs 2 a, 3 b). Hydrothermal activity was triggered by the emplacement of dacitic domes of Tortonian age (9.7 ± 1.2 Ma; Esteban‐Arispe et al., 2015 ).

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Empress Josephine Mine (MRDS #10012538) AG, PB, ZN, AU

of mines reports no production in 1946-47, but 67 ton ore in 1948 at grade of 0.1 oz/ton au, 10 oz/ton ag, 3% pb, 3% zn, 0.001% cu. Comments on the workings information MINE DEVELOPED BY 500-FT-DEEP INCLINED SHAFT WITH SEVEN LEVELS, ON WHICH TOTAL EXTENT OF DRIFTING IS UNKNOWN.

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Origin and K-Ar age of the phreatomagmatic breccia at the Trepča Pb-Zn ...

Syn-ore carbonates are enriched in Fe, Mg, Mn, many chalcophile elements, including Ag, As, Bi, Cd, Cu, Pb, Sb and Zn, as well as in Au, Y and REE. The post-ore stage accompanied the precipitation of significant amount of Ca-rich carbonates including the travertine deposits at the deposit surface.

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The Characters of Bairendaba - Scientific.Net

The paper systematically analyzed the relationships between geological conditions including strata and magmatic rock, etc and lead-zinc deposits, and found out their control action and features on Pb-Zn and Fe-Sn deposits, then established the comprehensive prospecting model for Pb-Zn and Fe-Sn deposits that consisted of geological, geochemical and mineralization information, which will ...

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The first Cu deposit of main collisional stage on the northern ... - CNKI

Through nearly ten years of geological exploration,several ore deposits with high economic values in the northern Gangdese have been developed and utilized;therefore,this belt has become another hot spot of geological exploration and research in Tibet.The Chengba deposit is the only medium-large sized Curich deposit newly discovered in the northern Gangdese belt.It is typical of a skarn ...

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Morphology and composition of alluvial gold from the Meiganga area ...

These features essentially indicate proximal primary source mineralizations and transportation of gold grains under high-energy conditions. ... analysis targeted a wide range of trace elements including: Au, Ag, Hg, Cu, Pb, Zn, Fe, S, Bi, Mo, As, Sb, Se, Te, Sn, Cr, Co, Ni, Pd. The following reference materials were used as calibration ...

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Silver Spruce Mobilizes Geological Team and Collars First Hole Of 2,000 ...

Jun 21, 2022Specifically, geochemical results from surface and underground sampling of eight target areas reported precious metals (Au to 51.5 g/t, Ag to 2,270 g/t), base metals (Pb to 42.3 wt.%, Zn to 22.9...

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Geophysical Responses over the Cannington Ag-Zn-Pb Deposit- Queensland

The Cannington deposit is a high grade Ag-Zn-Pb deposit found in 1990 by BHP Minerals drilling an isolated 1,000 nT aeromagnetic feature. Following the discovery of Cannington, numerous airborne, ground and borehole surveys have been carried out which overall, provided some assistance at better defining the ore system but did

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New Mexico Geological Society

Hidalgo County has many features of unusual geo-logic interest, among then (1) the Lordsburg district, the most important example of the copper-tourmaline class of ore deposits in the United States, (2) several examples of hypogene zoning, especially in the Lords-burg and San Simon districts, (3) the association of

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Silver Spruce and Colibri Hit Mineralization at El Pillado and La ...

Aug 3, 2022Geological features of epithermal Au, low to intermediate sulphidation Ag-Au (Pb-Zn), high sulphidation Au-Cu, and potential porphyry style Au-Cu occur as disseminated, stockwork and vein styles....

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Intermediate sulfidation epithermal Pb - Zn (± Ag ± Cu ± In) and low ...

The first has a main-stage pyrite - In-rich sphalerite - chalcopyrite - galena ore assemblage in scarce quartz - carbonates gangue. The second shows disseminated pyrite ± sphalerite ± chalcopyrite ± galena with economic grades of Au in abundant quartz - adularia ± fluorite gangue.

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Co-Cu-Au Deposits in Metasedimentary Rocks A Preliminary Report - USGS

As defined herein, the Co-Cu-Au deposits contain 0.1 percent or more by weight of Co in ore or mineralized rock, comprising disseminated to semi-massive Co-bearing sulfide minerals with associated Fe- and Cu-bearing sulfides, and local gold, concentrated predominantly within rift-related, siliciclastic metasedimentary rocks of Proterozoic age.

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Lucky Friday Mine (MRDS #10257227) PB, AG

The New Vein Will Be Mined Using Overhand Cut-And-Fill. In Addition, Hecla Plans To Upgrade Its Backfill Plant And Expand Its Concentrate Storage Facilities. Total Proven And Probable Ag Reserves At The Lucky Friday Mine Are 18.5 Moz. Property Includes The Golden Hunter Mine (Past Producer) Mas Seq# 0160790063.

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Frontiers | Multistage Genesis of the Haerdaban Pb-Zn Deposit, West ...

The Haerdaban Pb-Zn deposit is located on the western edge of the Chinese Western Tianshan Orogen. This deposit consists of stratiform and veined mineralization hosted in Proterozoic carbonaceous and dolomitic limestone. Three metallogenic stages were recognized: an early sedimentary exhalative stage (stage 1), an intermediate metamorphic remobilization stage (stage 2), and a late magmatic ...

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Equity Metals Continues to Identify High-Grade Silver at the Camp Vein ...

an 8.6 metre interval averaging 361g/t Ag, 0.3g/t Au, 0.8% Cu, 0.6% Pb and 1.2% Zn (522g ... which features interviews with experts in ... the hole has established four key geological domains ...

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Mapping the footprint of ore deposits in 3D using geophysical data

Linking geology and geophysical data. ... In a project conducted between 2006 and 2008 for the Predictive Mineral Discovery Co-operative Research Centre ... Cobar-style polmetallic Au-Cu-Ag-Pb-Zn deposits. AGSO Journal of Australian Geology and Geophysics 17. Shi P. 1992. Fluid fugacities and phase equilibria in the Fe-Si-O-H-S system.

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Ore genesis of the Huangshaping skarn W-Mo-Pb-Zn deposit, southern ...

Ault, KM and Williams-Jones, AE (2004) Sulfur and lead isotope study of the El Mochito Zn-Pb-Ag deposit. Economic Geology 99, 1223 -31. ... CA and Pettke, T (2005) Magma evolution and the formation of porphyry Cu-Au ore fluids: evidence from silicate and ... Huang, XD (2018) Middle-Late Jurassic Cu-Pb-Zn-Bearing and W-bearing granitoids ...

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Substitution mechanisms in In-, Au-, and Cu-bearing sphalerites studied ...

Institute of Geology of Ore Deposits (IGEM RAS), 35, Staromonetnyi per., 119017 Moscow, Russia. ... Zn, Fe, In, Cu, Au and Cd local atomic structure in sphalerite determined by EXAFS fitting using the IFEFFIT package ... 2Zn 2+ ↔(Cu,Ag,Au) 1+ +In 3+, may take place in sphalerite without formation of roquesite (CuInS 2) and, probably for Ag, ...

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Metallogenic Model of the Trepča Pb-Zn-Ag Skarn Deposit, Kosovo ...

Whereas there is no direct contact between magmatic rocks and the mineralization, the deposit is classified as a distal Pb-Zn-Ag skarn. Abundant pyroxene reflects low oxygen fugacity (<10 −31 bar) and anhydrous environment. Fluid inclusion data and mineral assemblage limit the prograde stage within a temperature range between 390° and 475°C.

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MASSIVE SULPHIDE DEPOSITS - Earth Sci

Cu is usually high relative to Zn + Pb in the core of the pipe and in the spine of the massive sulphides.The ratio of Zn + Pb to Cu increases around the outside of the pipe and towards the upper part and margins of the massive zone. Au and Ag usually are highest in the fringe areas. Barite also tends to occur at fringes.

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