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Trace elements in fluid inclusions of sediment-hosted gold ...

Our distinction of fluid end members based on trace elements is supported by data reported from other hydrothermal ore deposits. Fluid inclusion analyses from Bingham Canyon and other porphyry Cu-Mo-Au deposits confirm selective enrichment of B and As in magmatic vapor, in contrast to enrichment of Rb, Cs, and K in magmatic brines ( Fig. 3 ...

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Trace element and REE geochemistry of the Zhewang

2014-2-26  4.1 Geochemical characteristics of trace elements The analytical results of trace elements for ar-senopyrite, ores and host rocks from the Zhewang gold deposit are presented in Table 1 and the spider diagram normalized to upper crust average value (Taylor and McLennan, 1985) is shown in Fig. 2. As viewed from Table 1 and Fig. 2, arsenopyrites are

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Trace element composition of scheelite in orogenic gold ...

2019-9-11  The association between gold and scheelite in orogenic gold deposits has long been recognized. Goldfarb et al. review the characteristics of orogenic gold deposits.In many deposits, scheelite predates and/or is contemporaneous with gold deposition, such as in the Val-d’Or district, Canada (Beaudoin and Pitre 2005), at Mt. Charlotte, Australia (Mueller 1991) or Charmitan,

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Texture and Trace Element Composition of Rutile in ...

2021-10-11  The trace element composition of rutile from orogenic gold deposits is compared with that from other deposit types and geologic settings, including deposits from hydrothermal, magmatic-hydrothermal, magmatic, and sedimentary environments, as well as metamorphic environments in Figures 15 and 16.

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Trace element composition of scheelite in orogenic gold ...

LA-ICP-MS trace element binary plots for scheelite from orogenic gold deposits and other deposits types a Sr vs Eu anomaly (Eu*), b Sr/Mo vs Eu*, c Mo vs As, and d Sr/Mo vs As. Data for orogenic ...

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Identifying Pathfinder Elements for Gold in Multi

2013-12-24  gold prospects in the Wa-Lawra gold belt, northwest Ghana. The objectives of the study were to define gold relation- ships with other trace elements to determine possible pathfinder elements for gold from the soil geochemical data. The study focused on seven elements, namely, Au, Fe, Pb, Mn, Ag, As and Cu. Factor analysis and hierarchical cluster

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Geochemistry of hydrothermal gold deposits: A review ...

2011-7-1  With increasing new data, studies on the geochemistry of gold deposits can be used to trace the origin of ore-forming fluids, the source of gold, and the transporting form of Au and other ore-forming elements, such as Si, S, F, Cl, As and Ag.

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List Minerals Associated with Gold

2016-10-25  To know what type of rock is gold associated with you must see that the minerals most common in placer deposits are platinum, iridosmine, magnetite, iron

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Gold Deposits and Their Geological Classification

2016-11-20  Robert, F., Poulsen, K.H., and Dubé, B. G OLD DEPOSITS AND THEIR GEOLOGICAL CLASSIFICATION 211 Table 1: Commonly recognized types of lode gold deposits and their main geological attributes (cont’d.) Deposit Type Associated Alteration Metal Association Size Grade of Deposits Selected References

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CU, AU, AND ZN-PB SKARN DEPOSITS (MODELS 18b,c;

2004-2-25  disseminated gold deposit in contact metamorphosed rocks (Hastings and Harrold, 1988; Meinert, 1989). ... Summary statistics for trace elements associated with selected Cu-Au skarn deposits are presented in tables 1 to 3. Ranges and means for elements (As, Cd, Se, Pb, Cr, and Hg) that are potentially harmful to aquatic biota ...

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Trace elements in fluid inclusions of sediment-hosted gold ...

Our distinction of fluid end members based on trace elements is supported by data reported from other hydrothermal ore deposits. Fluid inclusion analyses from Bingham Canyon and other porphyry Cu-Mo-Au deposits confirm selective enrichment of B and As in magmatic vapor, in contrast to enrichment of Rb, Cs, and K in magmatic brines ( Fig. 3 ...

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Trace elements in quartz vein of Gubong gold deposit ...

The Gubong gold deposit is located in the Cheonan metallogenic province which records a highest gold production areas in the Republic of Korea. The Gubong deposit is the richest gold deposit in the province and consists of five stages of massive quartz veins that fill fractures along fault shear zones orienting NE and NW hosted in Precambrian metasedimentary rocks (Gyeonggi massif).

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List Minerals Associated with Gold

2016-10-25  To know what type of rock is gold associated with you must see that the minerals most common in placer deposits are platinum, iridosmine, magnetite, iron pyrites, ilmenite, zircon, garnets, rutile and barytes; wolfram, scheelite, brookite and

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Trace element and REE geochemistry of the Zhewang

2014-2-26  4.1 Geochemical characteristics of trace elements The analytical results of trace elements for ar-senopyrite, ores and host rocks from the Zhewang gold deposit are presented in Table 1 and the spider diagram normalized to upper crust average value (Taylor and McLennan, 1985) is shown in Fig. 2. As viewed from Table 1 and Fig. 2, arsenopyrites are

more

Finding Gold Essentials - Plant Soil Indicators ...

2017-12-28  Soils Associated with Gold Deposits By far, the best-known type of soil which may indicate the presence of gold is known as “ black sand .” Black sands are certainly not proof of the existence of nearby gold, only that the soil has a lot of

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Trace elements in fluid inclusions of sediment-hosted

2020-6-25  Trace elements in fluid inclusions of sediment-hosted gold deposits indicate a magmatic-hydrothermal origin of the Carlin ore trend Simon J.E. Large 1 , Edine Y.N. Bakker 1 , Philipp Weis 1,2 , Markus Wälle 1 , Mike Ressel 3 , and Christoph A. Heinrich 1,4

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DEPARTMENT OF THE INTERIOR - pubs.usgs.gov

2010-10-30  gold deposits has been ongoing for almost a decade now, and most exploration geochemists recognize the existence of a suite of elements associated with this type of deposit. This suite is often called the volatile or Carlin suite and is characterized by the elements Hg, As, Sb, W, and sometimes, but not always, Au. Many

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TRACE ELEMENT ANALYSIS OF PLACER GOLD SAMPLES

2016-3-31  Trace element analysis of placer gold can be used as a valuable exploration tool in order to determine the original deposit source and locating lode gold deposits. Placer gold collected from multiple districts in New Mexico and Alaska, coupled with a broad database of previously analyzed placer gold samples indicate correlations between

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Geochemical patterns of hydrothermal mineral deposits ...

Six alkalinity and oxidation classes of fresh igneous rocks were correlated with trace elements in rock chip samples from temporally and spatially associated ore deposits. Learning vector quantization and back-propagation artificial neural networks correctly classified 100 percent of whole rock oxides and 99 percent of mineralized samples ...

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Metal source of gold deposits in the Jiaoxibei area ...

2021-9-29  The metal source of gold deposits in the Jiaoxibei area, eastern China, has been investigated by many researchers, but no consensus has been reached so far. In this study, three typical gold deposits, the Xinli, Jiaojia, and Dayingezhuang deposits, were selected for trace element analysis of gold and pyrite to constrain the metal source.

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Trace element and REE geochemistry of the Zhewang

2014-2-26  4.1 Geochemical characteristics of trace elements The analytical results of trace elements for ar-senopyrite, ores and host rocks from the Zhewang gold deposit are presented in Table 1 and the spider diagram normalized to upper crust average value (Taylor and McLennan, 1985) is shown in Fig. 2. As viewed from Table 1 and Fig. 2, arsenopyrites are

more

Trace elements in fluid inclusions of sediment-hosted

2020-6-25  Trace elements in fluid inclusions of sediment-hosted gold deposits indicate a magmatic-hydrothermal origin of the Carlin ore trend Simon J.E. Large 1 , Edine Y.N. Bakker 1 , Philipp Weis 1,2 , Markus Wälle 1 , Mike Ressel 3 , and Christoph A. Heinrich 1,4

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Trace elements and C-O isotopes of calcite from Carlin ...

Trace elements and C-O isotopes of calcite from Carlin-type gold deposits in the Youjiang Basin, SW China: Constraints on ore-forming fluid compositions and sources TEXT SIZE: A A A The Carlin-type gold deposits in the Youjiang Basin, SW China can be further classified into three sub-types; strata-bound, fault-controlled, and diabase-associated.

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Metal source of gold deposits in the Jiaoxibei area ...

2021-9-29  The metal source of gold deposits in the Jiaoxibei area, eastern China, has been investigated by many researchers, but no consensus has been reached so far. In this study, three typical gold deposits, the Xinli, Jiaojia, and Dayingezhuang deposits, were selected for trace element analysis of gold and pyrite to constrain the metal source.

more

Textures and trace element geochemistry of magnetite in ...

2021-5-31  The Beiya gold deposit (323t of gold @ 2.47 g/t) ... View the article PDF and any associated supplements and figures for a period of 48 hours. ... plots in discriminant diagrams constrain the Beiya magnetite a hydrothermal origin. Trace elements in magnetite vary with respect to different textures. Titanium concentrations are similar in all ...

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Major and trace element geochemistry and 40 Ar/ 39 Ar ...

Fe-Au skarn deposits related to intrusive centers, mostly of granodioritic composition, are widespread in southern Mexico's Guerrero state. These intrusive rocks are largely associated with the NW-SE-oriented Laramide magmatic belt that extends across most of western Mexico. The geochemical composition and ages of representative rocks from the Mezcala mining district in central Guerrero are ...

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Finding Gold Essentials - Plant Soil Indicators ...

2017-12-28  Soils Associated with Gold Deposits By far, the best-known type of soil which may indicate the presence of gold is known as “ black sand .” Black sands are certainly not proof of the existence of nearby gold, only that the soil has a lot of

more

Geochemical patterns of hydrothermal mineral deposits ...

Six alkalinity and oxidation classes of fresh igneous rocks were correlated with trace elements in rock chip samples from temporally and spatially associated ore deposits. Learning vector quantization and back-propagation artificial neural networks correctly classified 100 percent of whole rock oxides and 99 percent of mineralized samples ...

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Locations of Deposits

2012-12-11  Locations of minable elements can be determined by the deposits of the associated rocks and minerals which, when deposited in significant and refinable concentrations, are called ores. The location of elements varies based on the minerals

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