trace elements associated with gold deposits

Trace-element geochemistry of pyrite and arsenopyrite: ore ,

2/1/2018· The distribution of Au and associated trace elements in pyrite and arsenopyrite from late Archean Hutti and Hira-Buddini orogenic gold deposits, eastern Dharwar Craton, southern India was investigated by laser ablation-inductively coupled plasma-mass spectrometry...

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Trace element distributions in (Cu)-Pb-Sb sulfosalts from ,

39 minor/trace element distributions in complex sulfide-sulfosalt assemblages can track a complex history 40 of Au deposition and enrichment 41 Keywords: Sulfosalts, trace elements, high-fineness native gold, gold deposits, Gutaishan 42 INTRODUCTION 43 In recent years, significant progress has been made in understanding the role played by ....

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Trace element remobilization at the Ok Tedi porphyry Cu-Au ,

ABSTRACT: The Ok Tedi Complex hosts a world-class porphyry copper-gold deposit Samples from the Ok Tedi Complex and the neighbouring Mount Ian Complex were analyzed for major and trace elements using XRF and HR-ICP-MS, and the isotopic composition of S in ,...

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Trace Element Analysis of Pyrite from the Zhengchong Gold ,

Gold deposits in metamorphic terranes can be classified as orogenic gold deposits or reduced , Here, we provide textural, EPMA and LA-ICP-MS data for Au and the other trace elements in the pyrite from the Zhengchong deposit In this contribution, , The gold mineralization is closely associated with carbonatization, sulfidation....

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Trace elements in fluid inclusions of sediment-hosted gold ,

GEOLOGY | Volume 44 | Number 12 | gsapubsorg 1015 Trace elements in fluid inclusions of sediment-hosted gold deposits indicate a magmatic-hydrothermal origin of the Carlin ore trend Simon JE Large1, Edine YN Bakker1, Philipp Weis1,2, Markus Wälle1, Mike Ressel3, and Christoph A Heinrich1,4 1Institute of Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, ,...

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Behaviour of trace elements in arsenian pyrite in ore deposits

Behaviour of trace elements in arsenian pyrite in ore deposits Artur P Deditius*, Stephen E Kesler, Rodney C Ewing, Department of Geological Sciences, University of Michigan, 2534 CC Little Bldg, Ann Arbor, MI 48109-1005, USA *Present address: CSIRO Exploration and Mining, 26 Dick Perry Ave, Kensington, Perth, WA 6151, Australia Satoshi Utsunomiya Department of Chemistry, Kyushu ....

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Accumulation of Trace Elements into Black Shale - AusIMM

It is inferred that sediments coeval with those where sedimentary pyrite is enriched in Au and associated trace elements are more likely to be source rocks of orogenic and Carlin-style gold deposits Factor analysis of the trace element content of pyrite through geologic time was conducted to investigate the multivariate relationships amongst ....

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Banded iron formations, pyritic black shale, and gold ,

This work demonstrates that certain trace elements, including those most commonly associated with sediment-hosted and greenstone-hosted gold deposits, were concentrated in upper-crustal siliciclastics during sedimentation or early diagenesis (that is, prior to later events that gave rise to sediment-hosted and greenstone-hosted gold deposits), and particularly in syn-sedimentary to early ....

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Multi-Stage Evolution of Gold-Bearing Hydrothermal Quartz ,

Abstract: We performed a detailed analysis of hydrothermal quartz at the Mokrsko gold deposit (Celina, Mokrsko-East, and Mokrsko-West deposits) Twenty-one samples were studied by scanningˇ electron microscopy cathodoluminescence (CL) imagining, CL emission spectra and trace elements were measured on six selected sampl...

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Distribution of trace elements between carbonaceous matter ,

This study provides significant new insights into the distribution and deportment of trace elements between multiple generations of CM and associated sulfides in a sediment-hosted gold system: (1) In unaltered black shales, As, Se, Ni, Pb, and Cu are enriched in pyrite polyframboids relative to co-located CM1 grains, whereas a small amount of As, Pb, Bi, and U is hosted by CM1...

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Trace element composition of scheelite in orogenic gold ,

Abstract Scheelite from 25 representative orogenic gold deposits from various geological settings was investigated by EPMA (electron probe micro-analyzer) and LA-ICP-MS (laser ablation-inductively coupled plasma-mass spectrometer) to establish discriminant geochemical features to constrain indicator mineral surveys for gold exploration...

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Trace element and REE geochemistry of the Zhewang gold ,

41 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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A STUDY CF THE THACE RLQffiNTS ASSOCIATED WITH GOL^i ,

CHARACTERISTICS 0? NATIVE GOLD (a) Introduction 5 (b) The associated minerals and elements in gold ore deposits 6 (c) The composition of native gold 1 1 (d) The fineness of gold THE ANALYSIS CF THE GOLD SAMPLER 15 THE FRE-ANALYTICAL TREATMENT OF THE Sampt 18 (a) The collection of the samples 18 (b) Ore microscopic examination of native gold 19...

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Trace element associations in magnetite and hydrothermal ,

Gold mineralization in the Geita Hill deposit is associated with pyrite formed along microfracture networks and sulfidation fronts together with K-feldspar and biotite The sulfidation fronts are best developed in magnetite-bearing ironstone The gold is present mainly as electrum and gold tellurides along grain boundaries, and as inclusions in pyrite, quartz, biotite and K-feldspar...

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Pyrite as a record of hydrothermal fluid evolution in a ,

hosted copper/uranium deposits, Archean to Mesozoic lode, epithermal and Carlin-type gold deposits, among oth-ers In hydrothermal systems, pyrite is not only a sink for iron and sulfur as it also plays an important role in super-gene Cu enrichment and acid mine drainage Additionally, pyrite can contain minor elements such as Au, Ag, Cu, Pb....

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Ore genesis - Wikipedia

Placer deposits are sourced from pre-existing gold deposits and are secondary deposits Placer deposits are formed by alluvial processes within rivers and streams, and on beaches Placer gold deposits form via gravity , with the density of gold causing it to sink into trap sites within the river bed, or where water velocity drops, such as bends in rivers and behind boulders...

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Plutonic-Related Gold Deposits of Interior Alaska ,

Plutonk-relcttcd gold deposits in interior Alaska occur in the apexes of middle Cretaceous (mostly 93-86 Ma) reduced plutons and in spatially associated sedimentary and metamorphic rocks Hydrothermal micas from these deposits have cooling ages 0 to 2 my younger than those of magmatic micas and amphiboles from hosting intrusions...

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Iron oxide copper gold ore deposits - Wikipedia

Iron oxide copper-gold deposits are also often associated with other valuable trace elements such as uranium, bismuth and rare-earth metals, although these accessories are typically subordinate to copper and gold in economic terms Some examples include the Olympic Dam, South Australia, and Candelaria, Chile, deposits...

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Gold, Mining and Prospecting: Trace Minerals found with Gold

There are many minerals that are found in nature with gold, one of the most common found in placer deposits is small grains of magnetite This and other minerals have been used to find gold that can be recovered by the use of the pan Other minerals have been used in locating gold in lode deposits...

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Metals and Other Trace Elements - USGS

Trace elements tend to concentrate in sediment, but also can dissolve to some degree in water, and can present a risk to human and aquatic health Learn about trace elements in groundwater in Principal Aquifers of the United States, our invisible, vital resource METALS Many people might not realize that most elements are metals...

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Elements Associated with Gold

On a Periodic Table, elements often found to associate with gold have been group/classified Elements Universally Associated with Gold Elements Typical in Minerals Commonly Associated with Gold Elements Concentrated in Gold Bearing Mineral Associations of Individual Orebodies Elements Characteristic of Gold Only Ores Elements with Traces Commonly found in Gold and its Compounds This does not ....

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The trace element chemistry of arsenopyrite and its ,

13 Orogenic Gold Deposits 22 131 Gold Bearing Hydrothermal Fluids 24 132 Gold Mineralizing Processes 28 133 Orogenic Gold Deposit Morphology 30 134 Gold Deposit Endowment 33 14 Arsenopyrite in Gold Deposits 37 141Trace Elements 41 15 Gold Deposit Exploration 45 16 Research Objectives 47 161 Arsenopyrite LA-ICP-MS 48...

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In-situ trace elements on pyrite and arsenopyrite of the ,

1 Introduction Laser ablation inductively-coupled plasma mass spectrometry (LA-ICPMS) has been widely applied to investigate gold and associated trace elements in auriferous pyrite and arsenopyrite from lode-gold deposits (Large et al, 2009, Cook et al, 2013, Li et al, 2014, Deng et al, 2020a)Studies of gold occurrence in these sulfides revealed that gold is concentrated with some ....

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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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Mineral hosts for gold and trace elements in the regolith ,

Mineral-trace element associations have been investigated in the regolith developed onmineralised rocks, at the Boddington Cu-Au deposit and Mt Percy gold deposit, WesternAustralia A detailed characterisation of the mineralogy and geochemistry has been achievedusing in situ microanalyses on regolith materials The use of Laser Ablation-InductivelyCoupled Plasma-Mass Spectrometry (LA-ICP ,...

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(PDF) Accumulation of Trace Elements into Black Shale ,

It is inferred that sediments coeval with those where sedimentary pyrite is enriched in Au and associated trace elements are more likely to be source rocks of orogenic and Carlin-style gold deposits...

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Platinum-group element and gold contents , - Cambridge Core

Concentrations in trace elements such as platinum-group elements (PGEs), Au and other metals was obtained by laser ablation inductively coupled plasma mass spectroscopy analys Results show that variations in PGEs and Au compositions can be related to the magmatic vs hydrothermal origin of the grains; and to their provenance from deposits enriched in either Ni, Au or both...

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Trace element-mineral associations in the regolith ,

The association between trace elements and regolith minerals has been studied at the Scuddles Cu-Znsulphide deposit, Golden Grove, Western Australia The mineralogy and the trace element abundancewere characterised using a combination of bulk and in situ micro-analytical techniqu The determination of low abundance elements in the minerals was carried out with in situ Laser ....

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Identifying Pathfinder Elements for Gold in Multi-Element ,

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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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 ; Heinrich et al, 1999 ; Landtwing et al, 2010 )...

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