the geology of hydrothermal gold deposits in chile

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the geology of hydrothermal gold deposits in chile

The geology of hydrothermal gold deposits in Chile ...

1990-2-1 · A mix- GEOLOGY OF HYDROTHERMAL GOLD DEPOSITS IN CHILE TABLE 13 Summary of available fluid-inclusion data 221 District Measured Selected T Salinity- T Salinity- ( C ) equiv. ( C ) equiv. (wt.%) (wt.%) Evidence Paleodepth of estimation boilingb ( m ) Reference Faride 180-270 1.5- 7.6 190-250 3.5 Yes 150- 200 (90) (75) ElIndio 190-280 0.1-40 220 ...

The geology of hydrothermal gold deposits in Chile ...

A detailed geologic study has been undertaken of the characteristics of 20 of the best known hydrothermal gold deposits in Chile. Characteristics include production and reserve data, metal grades, geotectonic setting, morphology, mineralogy, zonation, alteration assemblages and fluid-inclusion studies.

Gold deposits in Chile - Andean Geology

A review of gold and gold bearing base metals deposits in Chile, indicate the existence of at least six different type of ore deposits, most largely formed during the Cenozoic with predominance in the Miocene. Mesozoic deposits are common but less relevant regarding their size and gold content. These hydrothermal ore deposits are

Regional geologic setting of epithermal gold deposits, Chile

Abstract. Epithermal gold deposits in Chile are Cretaceous to Cenozoic in age. The ores and the volcanic rocks with which they are associated were generated at a noncollisional, ocean-continent convergent plate margin. They are related to long, slightly sinuous north-northeast-trending magmatic belts roughly parallel to the Pacific coast.

Hydrothermal Evolution of the El Teniente Deposit, Chile ...

The magmatic-hydrothermal evolution of the El Teniente porphyry Cu-Mo deposit in the Central Andes in Chile is reconstructed based on field relationships, scanning electron microscopy cathodoluminescence, petrography, and fluid inclusion analysis by microthermometry and laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS).

The porphyry gold deposit at Marte, northern Chile ...

A porphyry gold deposit has been documented for the first time at Marte in the Maricunga belt of the Andean Cordillera, northern Chile. Exploration conducted from 1981 through 1987 resulted in definition of 66 metric tons of contained gold.

Geological and geochemical characteristics of

Hydrothermal alteration commonly occurs in lode gold deposits, and contributes to metal precipitation through water–rock interactions. In the Wangu gold deposit in northeastern Hunan, South China, bleaching of slates enclosing auriferous quartz veins widespreadly occur, with the colour transformed from dark-grey into pale yellow-grey.

Geochemistry of hydrothermal gold deposits: A review ...

2011-7-1 · 3. The geochemical behavior of gold in hydrothermal systems. The occurrence of gold mainly depends on temperature, pressure, pH values, Cl − concentration, and fugacity of H 2 S in a hydrothermal system. Gold mostly occurs as AuCl − 2 in a system with temperature higher than 400 °C (Gammons and Williams-Jones, 1997), and with decreasing temperature being the primary

Gold-rich porphyry systems in the Maricunga Belt,

1991-10-1 · The Maricunga belt is a linear metallogenic unit defined by at least 14 zones of gold and/or silver mineralization between latitudes 26 degrees and 28 degrees S in the Andean Cordillera of northern Chile. After 10 years of exploration, three precious metal deposits are in production, two more have proven reserves, and others are being drilled.

Gold Deposits and Their Geological Classification

2016-11-20 · A rational geological classification of the commonly recognized lode gold deposits is feasible if it is based on the geological settings of the deposits, host rocks, nature of mineralization and geoche m-ical signature. Sixteen common types of bedrock gold deposits are distinguished from one another and their main geological attributes are ...

Gold deposits in Chile - Andean Geology

A review of gold and gold bearing base metals deposits in Chile, indicate the existence of at least six different type of ore deposits, most largely formed during the Cenozoic with predominance in the Miocene. Mesozoic deposits are common but less relevant regarding their size and gold content. These hydrothermal ore deposits are

La Candelaria (Record #1117) Hydrothermal deposit in

Haynes, D.W., 2002, Giant iron oxide-copper-gold deposits: are they in distinctive geological settings?, in Cooke, D.R., and Pongratz, June, eds., Giant ore deposits ...

Magmatic-hydrothermal gold deposits of the Maricunga

Magmatic-hydrothermal gold deposits of the Maricunga belt, northern Chile. Responsibility John Leon Muntean. Imprint ... Department of Geological and Environmental Sciences. ... Hydrothermal deposits. Ore deposits > Chile > Maricunga Belt. Bibliographic information. Publication date 1998 Note Submitted to the Department of Geological and ...

Hydrothermal Evolution of the El Teniente Deposit, Chile ...

The magmatic-hydrothermal evolution of the El Teniente porphyry Cu-Mo deposit in the Central Andes in Chile is reconstructed based on field relationships, scanning electron microscopy cathodoluminescence, petrography, and fluid inclusion analysis by microthermometry and laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS).

(PDF) The Geology of the El Soldado Manto Type Cu (Ag ...

The Geology of the El Soldado Manto Type Cu (Ag) Deposit, Central Chile January 2002 In book: Hydrothermal Iron Oxide Copper-Gold & Related Deposits: A Global Perspective, Volume 2 (pp.185-205)

(PDF) GEOLOGY AND HYDROTHERMAL ALTERATION OF

PDF | On Aug 31, 2018, Conrado Permuy Vidal and others published GEOLOGY AND HYDROTHERMAL ALTERATION OF THE SIERRA INESPERADA LITHOCAP, GUANACO DISTRICT, CHILE | Find, read and cite all the ...

Geological and geochemical characteristics of

Hydrothermal alteration commonly occurs in lode gold deposits, and contributes to metal precipitation through water–rock interactions. In the Wangu gold deposit in northeastern Hunan, South China, bleaching of slates enclosing auriferous quartz veins widespreadly occur, with the colour transformed from dark-grey into pale yellow-grey.

Hydrothermal Deposits | SpringerLink

2020-2-29 · Reynolds, L.J. 2000. Geology of the Olympic Dam Cu-U-Au-Ag-REE deposit. In Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, vol. 1, ed. T.M. Porter, Adelaide. Google Scholar

Introduction to Geology and Resources of Gold, and ...

2010-9-19 · Introduction to Geology and Resources of Gold, and Geochemistry of Gold The Case for Gold An Introduction to Geology and Resources of Gold in the United States By DANIEL R. SHAWE Geochemistry of Gold in Hydrothermal Deposits By SAMUEL B. ROMBERGER U.S. GEOLOGICAL SURVEY BULLETIN 1857 GEOLOGY AND RESOURCES OF GOLD IN THE UNITED STATES

The Origin of Epigenetic Gold Deposits—the Magmatic ...

The hydrothermal theory of the origin of epigenetic mineral deposits has had a long gestation and has many variants. Hydrothermal origin without qualifiers means simply transport and deposition of the mineral matter of veins and similar deposits by and from hot waters. With qualifiers such as meteoric, metamorphic, or magmatic the theory is ...

Gold Deposits in Chile | Cabello | Andean Geology

Gold bearing copper deposits constitute an important part of Chile’s total gold production. Both IOCG type but especially porphyry copper deposits are and will remain as a substantial source to supplement the future output of the gold in the country. The 82 deposits with their tonnage and grade studied, represent a total gold content of ...

La Candelaria (Record #1117) Hydrothermal deposit in

Haynes, D.W., 2002, Giant iron oxide-copper-gold deposits: are they in distinctive geological settings?, in Cooke, D.R., and Pongratz, June, eds., Giant ore deposits ...

Magmatic-hydrothermal gold deposits of the Maricunga

Magmatic-hydrothermal gold deposits of the Maricunga belt, northern Chile. Responsibility John Leon Muntean. Imprint ... Department of Geological and Environmental Sciences. ... Hydrothermal deposits. Ore deposits > Chile > Maricunga Belt. Bibliographic information. Publication date 1998 Note Submitted to the Department of Geological and ...

(PDF) The Geology of the El Soldado Manto Type Cu (Ag ...

The Geology of the El Soldado Manto Type Cu (Ag) Deposit, Central Chile January 2002 In book: Hydrothermal Iron Oxide Copper-Gold & Related Deposits: A Global Perspective, Volume 2 (pp.185-205)

(PDF) GEOLOGY AND HYDROTHERMAL ALTERATION OF

PDF | On Aug 31, 2018, Conrado Permuy Vidal and others published GEOLOGY AND HYDROTHERMAL ALTERATION OF THE SIERRA INESPERADA LITHOCAP, GUANACO DISTRICT, CHILE | Find, read and cite all the ...

Hydrothermal Deposits | SpringerLink

2020-2-29 · Reynolds, L.J. 2000. Geology of the Olympic Dam Cu-U-Au-Ag-REE deposit. In Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, vol. 1, ed. T.M. Porter, Adelaide. Google Scholar

Felsic magmatism and hydrothermal gold deposits: A ...

Archean hydrothermal gold deposits have much in common with their Cenozoic counterparts, especially their association with felsic magmatism, and they are regarded here as metamorphosed equivalents of the Cenozoic deposits. The concentration of productive gold systems in the Cenozoic is surpassed only by that of the late Archean.

Genesis of hydrothermal gold mineralization in the Qianhe ...

2021-2-15 · Genesis of hydrothermal gold mineralization in the Qianhe deposit, central China: Constraints from in situ sulphur isotope and trace elements of pyrite Jia‐Ying Feng School of Earth Sciences and Resources & State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences Beijing, Beijing, China

Introduction to Geology and Resources of Gold, and ...

2010-9-19 · Introduction to Geology and Resources of Gold, and Geochemistry of Gold The Case for Gold An Introduction to Geology and Resources of Gold in the United States By DANIEL R. SHAWE Geochemistry of Gold in Hydrothermal Deposits By SAMUEL B. ROMBERGER U.S. GEOLOGICAL SURVEY BULLETIN 1857 GEOLOGY AND RESOURCES OF GOLD IN THE UNITED STATES

The Origin of Epigenetic Gold Deposits—the Magmatic ...

The hydrothermal theory of the origin of epigenetic mineral deposits has had a long gestation and has many variants. Hydrothermal origin without qualifiers means simply transport and deposition of the mineral matter of veins and similar deposits by and from hot waters. With qualifiers such as meteoric, metamorphic, or magmatic the theory is ...