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characteristics of epithermal deposits

Epithermal Gold Deposits Characteristics

May 23, 2015 · Pamukkale’s Terraces. A fascinating group and characteristic of Epithermal gold deposits is that you can virtually see them forming today, simply by visiting hot springs. Like those with Yellowstone in Wyoming or Rotorua in New Zealand. This photo is Pamukkale, low sulfidation hot springs in Turkey, with a beautiful white centre terraces.

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Descriptive models for epithermal gold-silver deposits

Nov 07, 2018 · Epithermal gold-silver deposits are vein, stockwork, disseminated, and replacement deposits that are mined primarily for their gold and silver contents; some deposits also contain substantial resources of lead, zinc, copper, and (or) mercury. These deposits form in the uppermost parts of the crust, at depths less than about 1,500 meters below the water table, and at temperatures

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Epithermal Gold Deposits : their characteristics & modeling

Ore deposits: Classification vs Modeling Each ore deposit is unique like a person’s finger print This uniqueness arises out of : ¾fundamental differences in processes and environments ¾local, site-specific geologic variations And produces an extremely large variation in characteristics ¾If we group the deposits according to their characteristics, we get a

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(PDF) Epithermal gold deposits. Styles, characteristics ...

Figure 1. Generalized sketches showing the relation of fluid types to alteration zoning in the two styles of epithermal deposits. (a) In low-sulfidation systems, the fluid at 1-2 km depth is near ...

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(PDF) Epithermal gold deposits: Styles, characteristics ...

This is a 16-block poster on the styles of epithermal deposits, their characteristics, and exploration, based on our understanding in 1996 (i.e., now parts are out-of-date).

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(PDF) Epithermal gold deposits Styles characteristics an ...

Epithermal gold deposits Styles characteristics an. Published in SEG Newsletter, 1995, No. 23, pp. 1, 9-13 EPITHERMAL GOLD DEPOSITS: STYLES, CHARACTERISTICS AND EXPLORATION Noel C. White1 and Jeffrey W. Hedenquist 2 1 BHP Minerals International Exploration, 229 Shepherds Bush Road, London W6 7AN, U.K. 2 Mineral Resources Dept., Geological ...

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Epithermal deposits: geological characteristics and ...

Epithermal deposits are diverse and attractive exploration targets for precious metals because they can contain high metal grades and large resources, and they can overlie deep porphyry mineralization. This course focuses on the geological characteristics of epithermal deposits,

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Epithermal Deposits - Mining Geology HQ

sulphidation epithermal deposits. 1) Magmatic vapour condenses in meteoric water 2) Gold transported as Au (HS) 2-3) Water rises and boils, releasing H. 2. S and destabilizing Au(HS) 2-4) Gold deposits as the native metal Au(HS) 2-+ H + + 0.5 H. 2. O = Au + 0.25O. 2 + 2H 2S. Removed by boiling

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Epithermal Gold Deposits : their characteristics & modeling

Ore deposits: Classification vs Modeling Each ore deposit is unique like a person’s finger print This uniqueness arises out of : ¾fundamental differences in processes and environments ¾local, site-specific geologic variations And produces an extremely large variation in characteristics ¾If we group the deposits according to their characteristics, we get a

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Epithermal deposits: geological characteristics and ...

Epithermal deposits are diverse and attractive exploration targets for precious metals because they can contain high metal grades and large resources, and they can overlie deep porphyry mineralization. This course focuses on the geological characteristics of epithermal deposits,

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(PDF) Epithermal gold deposits Styles characteristics an ...

Epithermal gold deposits Styles characteristics an. Published in SEG Newsletter, 1995, No. 23, pp. 1, 9-13 EPITHERMAL GOLD DEPOSITS: STYLES, CHARACTERISTICS AND EXPLORATION Noel C. White1 and Jeffrey W. Hedenquist 2 1 BHP Minerals International Exploration, 229 Shepherds Bush Road, London W6 7AN, U.K. 2 Mineral Resources Dept., Geological ...

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Characteristics of some silver-, and base metal-bearing ...

The data collected for this compilation are presented in the following pages in summaries of the important characteristics of each deposit. This compilation, which shows the complexities in the geology of epithermal ore deposits in Mexico and Peru, serves as a basis for further comparisons among epithermal deposits throughout the world.

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Epithermal Gold Deposits Part 1! - USGS

Epithermal Gold Deposits Part II Geology and Gold Deposits of the Oatman District, Northwestern Arizona By Ed DeWitt, Jon P. Thorson,1 and Robert C. Smith2 Abstract Mines in the Oatman mineralized district, near Oatman in northwestern Arizona, have produced more than 1.98 million ounces of gold from mid-Tertiary, epithermal, silver-

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Epithermal | Mining Geology HQ

Key minerals and characteristics of HS epithermal deposits include the following: Alternation zone: Aerially extensive and visually prominent due to acidic alteration of volcanics to bleached clays. Alteration minerals: Alunite ( KAl 3 (SO 4 ) 2 (OH) 6 ), Jarosite, halloysite, kaolinite, dickite, diaspore, anatase, and prophyllite at deeper levels.

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Characteristics of High Sulphidation Epithermal Gold ...

Characteristics of High Sulphidation Epithermal Gold Deposits of the Mio-Pliocene Age Volcanic Belt, Chile and Argentina 2018. Mirasol Resources Ltd. 910-850 West Hastings Street Vancouver, BC Canada V6C 1E1 (604) 602-9989 mirasolresources. TSXV - MRZ

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Characteristics of High Sulphidation Epithermal Gold ...

This compilation presents a summary of the geological and exploration characteristics of some key Mio - Pliocene age (23 to 2.5 million year old) High Sulphidation Epithermal (HSE) gold- silver deposits of the Chile – Argentine Cordillera, including information on the

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Miocene and Early Pliocene Epithermal Gold-Silver Deposits ...

The contrasting types and characteristics of epithermal deposits and their affinities with as-sociated igneous rocks suggest that a genetic relationship is present between these Au-Ag deposits and their temporally associated magmatism, although available data do

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Characteristics and controls of the largest porphyry ...

May 09, 2007 · These large porphyry‐type deposits conform to a single overall model, whereas the large epithermal gold deposits are varied in both genetic type and mineralisation style. Most regional and local characteristics of the largest porphyry and epithermal deposits fail to explain convincingly their extremely high gold contents.

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A new hybrid method for epithermal gold exploration using ...

Jul 31, 2021 · Epithermal deposits are extremely variable in form, and much of this variability is caused by strong permeability differences in the near-surface environment, resulting from lithologic, structural ...

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Geochemical characteristics of igneous rocks associated ...

Jan 01, 2017 · Simmons et al. (2005) defined a representative subset of epithermal deposits whose characteristics exemplify this broad class of deposits . This subset, augmented by a few additional, subsequently discovered deposits, constitutes the group of epithermal deposits for which data were compiled (du Bray, 2014).

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Epithermal Gold Copper Deposits Corbett

Low sulphidation epithermal gold deposits are derived from reduced, near neutral pH, dilute fluids developed by the entrainment of magmatic components within deep circulating groundwaters, and are characterised by sulphur species reduced to H 2 S (Corbett and Leach, 1998 and references

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GEOLOGY AND GEOcHEMISTRY OF EPITHERMAL SYSTEMS

Characteristics of Volcanic-Hosted Epithermal Precious-Metal Deposits Geologic Characteristics of Sediment-Hosted, Disseminated W.C. Bagby and B.R. Berger Precious-Metal Deposits in the Western United States Relationship of Trace-Element Patterns to Alteration and M.L. Silberman and B.R. Berger Morphology in Epithermal Precious-Metal Deposits

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Epithermal Gold Deposits Part 1! - USGS

Epithermal Gold Deposits Part II Geology and Gold Deposits of the Oatman District, Northwestern Arizona By Ed DeWitt, Jon P. Thorson,1 and Robert C. Smith2 Abstract Mines in the Oatman mineralized district, near Oatman in northwestern Arizona, have produced more than 1.98 million ounces of gold from mid-Tertiary, epithermal, silver-

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"Characteristics of the major epithermal gold deposits in ...

Characteristics of the major epithermal gold deposits in the northern Sierra Madre Occidental, Mexico. Ruben Manriquez, University of Texas at El Paso. Abstract. The nine largest epithermal gold systems discovered so far in the northern Sierra Madre Occidental (SMO) were analyzed and compared in order to find their similarities, which are potentially influential in the development of these ...

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Geological characteristics of epithermal precious and base ...

Geological characteristics of epithermal precious and base metal deposits. Epithermal deposits are important sources of gold and silver that form at 20 wt percent NaCl equiv for Ag-Pb-Zn deposits. Stable isotope data indicate that hydrothermal solutions were composed mostly of deeply circulated meteoric water, with a nil to small and variable ...

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Characteristics and genesis of epithermal gold deposits

Citation. Cooke, DR and Simmons, SF, Characteristics and genesis of epithermal gold deposits, Reviews in Economic Geology, 13 pp. 221-244. ISSN 0741-0123 (2000) [Refereed Article]

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Epithermal Gold Deposits | Geology for Investors

Jul 12, 2013 · The term epithermal was coined to describe a relatively shallow deposit, hence the Greek word “epi” meaning shallow and the “thermal” part of the word referring to the heated fluid which is necessary for the deposit’s formation. There are two main types of epithermal gold deposits; low and high sulphidation (Figure 1).

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Characteristics of a Low-Sulfidation Epithermal Deposit in ...

Characteristics of a Low-Sulfidation Epithermal Deposit in the River Reef Zone and the Watuputih Hill, the Poboya Gold Prospect, Central Sulawesi, Indonesia: Host Rocks and Hydrothermal Alteration . by Syafrizal. 1, Tomy Alvin Rivai. 2, Kotaro Yonezu. 2, Damar Kusumanto. 3, Koichiro Watanabe. 2 and .

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Epithermal Au-Ag – The Magmatic Connection Comparisons ...

Although epithermal Au deposits associated with alkaline magmatism display some distinct metal abundance characteristics, mainly Te enrichment (Emperor, Tavatu Fiji; Cripple Ck, US), they should not be classed as a separate deposit style, but occur as a range of documented deposit types (Corbett and Leach, 1998) derived from a different magma type

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Geological and mineralization characteristics of the ...

Nov 22, 2019 · Kestanelik epithermal gold deposit is situated in the Biga Peninsula, which hosts numerous metallic deposits belonging to the Tethyan Metallogenic Belt. In the Biga peninsula the Tethyan Metallogenic Belt is represented by a Neo-Tethyan suture zone. Discovered deposits along the belt are commonly associated with Cenozoic magmatism ranging between 52 and 18 Ma in age,

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Characteristics of the Cibaliung gold deposit: Miocene low ...

Fingerprint Dive into the research topics of 'Characteristics of the Cibaliung gold deposit: Miocene low-sulfidation-type epithermal gold deposit in Western Java, Indonesia'. Together they form a unique fingerprint. Gold deposits Chemical Compounds

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A new hybrid method for epithermal gold exploration using ...

Jul 31, 2021 · Epithermal deposits are extremely variable in form, and much of this variability is caused by strong permeability differences in the near-surface environment, resulting from lithologic, structural ...

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Models and Exploration Methods for Major Gold Deposit Types

and high-sulfidation epithermal deposits, are associated with high-level, oxidized porphyry stocks in magmatic arcs. Other important deposit types include Carlin, low-sulfidation epithermal, Au-rich VMS and Witwatersrand deposits. The key geology features of the

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Physical setting and characteristics of high-sulfidation ...

Gold and silver mineralization in the vast majority of Andean high-sulfidation epithermal deposits occurs 200-700 m below low relief but high elevation landforms situated at 3500 to 5200 m a.s.l. Stratovolcanoes, in contrast, are uncommon ore hosts. Most deposits are middle Miocene and younger and include the California-Vetas mining district ( Colombia), Quimsaocha (Ecuador), Yanacocha ...

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Characteristics of a low-sulfidation epithermal deposit in ...

Fingerprint Dive into the research topics of 'Characteristics of a low-sulfidation epithermal deposit in the River Reef Zone and the Watuputih Hill, the Poboya gold prospect, Central Sulawesi, Indonesia: Host rocks and hydrothermal alteration'. Together they form a unique fingerprint.

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Low-sulfidation epithermal gold deposits in Java ...

All deposits show typical LS epithermal characteristics, i.e. quartz veins with crustiform-colloform textures, relatively high Au (Ag/Au ratio The Cibaliung veins seem to have genetic linkage with the dioritic intrusion and diatreme (phreatomagmatic) breccias, as well as with rhyolitic domes.

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