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Journal articles on the topic 'Babin Porphyry Cu District'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2025

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1

Real, Irene del, Farhad Bouzari, Amelia Rainbow, et al. "Spatially and Temporally Associated Porphyry Deposits with Distinct Cu/Au/Mo Ratios, Woodjam District, Central British Columbia." Economic Geology 112, no. 7 (2017): 1673–717. http://dx.doi.org/10.5382/econgeo.2017.4526.

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Abstract The Woodjam district is a cluster of porphyry Cu-Au deposits of Early Jurassic age (~196 Ma) and is located in the Quesnel terrane in central British Columbia. Porphyry centers include the Southeast zone Cu-Mo porphyry, the Deerhorn and Megabuck Au-Cu porphyries, and the Takom and Three Firs Cu-Au porphyries. The Takomkane batholith, which intruded strata of the Nicola Group and is host to the Southeast zone, has characteristics of a calc-alkalic Cu-Mo porphyry. The Deerhorn, Megabuck, and Takom deposits are centered on narrow monzonite bodies with pencil-like geometries that intruded

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2

Díaz Castro, Carlos, David R. Cooke, Ivan Belousov, et al. "The Cascabel Porphyry Cu-Au-Ag District, Northern Ecuador." Economic Geology 120, no. 2 (2025): 335–62. https://doi.org/10.5382/econgeo.5147.

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Abstract The Cascabel Cu-Au-Ag porphyry cluster is part of the Eocene metallogenic belt of the northern Western Cordillera of Ecuador, and formed during east-directed, low-angle subduction and eastward migration of the Macuchi arc. Cascabel is part of the Imbaoeste mining district, a NE-trending mineralized belt located between the regional-scale Chimbo-Toachi shear zone to the west and the Calacalí-Pujilí-Pallatanga fault to the east. The basement rocks of the Cascabel district are gabbros and mafic volcanic breccias. They are overlain by late Eocene volcanic and volcanosedimentary rocks inte

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3

Du, Jingguo, and Andreas Audétat. "Early sulfide saturation is not detrimental to porphyry Cu-Au formation." Geology 48, no. 5 (2020): 519–24. http://dx.doi.org/10.1130/g47169.1.

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Abstract Ore-forming magmas are commonly considered to have been unusually metal rich. Because Cu and Au are strongly chalcophile, early sulfide saturation has been regarded as detrimental to porphyry Cu-Au mineralization. Here we demonstrate, based on amphibole-rich cumulate xenoliths and amphibole megacrysts from the Tongling porphyry(-skarn) Cu-Au mining district in southeastern China, that this view is not necessarily correct. Age data combined with petrological and geochemical evidence suggest that the mineralizing magmas at Tongling underwent significant fractional crystallization of amp

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4

Bensaman, Benny, Mega Fatimah Rosana, and Euis Tintin Yuningsih. "High Sulphidation Mineralization and Advanced Argillic Alteration within Concealed Gajah Tidur Porphyry, Grasberg District, Papua." Indonesian Journal on Geoscience 11, no. 1 (2024): 15–33. http://dx.doi.org/10.17014/ijog.11.1.15-33.

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High sulphidation (HS) mineralization and associated advanced argillic alteration have been intersected by three drill holes below the Grasberg porphyry Cu-Au deposit, known as the Gajah Tidur prospect. The prospect is located between 1,500 ̶ 2,750 m level, in Grasberg District, Papua, Indonesia. The holes are of KL98-10-21, KL98-10-22, and GRD39-08 which intersected 3.4 Ma Gajah Tidur monzonite, Grasberg Igneous Complex, the wall rocks of Kembelangan, and New Guinea Limestone Group. This research aims to determine the characteristics of high sulphidation mineralization associated with advance

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5

Ouyang, Yongpeng, Qi Chen, Runling Zeng, and Tongfei Li. "Chronological and Geochemical Characteristics of a Newly Discovered Biotite Granite Porphyry in the Zhuxi W-Cu Polymetallic Deposit, Jiangxi Province, South China: Implications for Cu Mineralization." Minerals 15, no. 6 (2025): 624. https://doi.org/10.3390/min15060624.

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Multiple occurrences of adakitic rocks, with crystallization ages clustering around ~160 Ma, have been documented in the Zhuxi district, northeast Jiangxi Province, South China. This research identifies a new adakitic biotite granite porphyry within the Zhuxi W-Cu polymetallic deposit. Zircon U-Pb geochronology of this porphyry yields a crystallization age of 161.6 ± 2.1 Ma. Integrated with previously published data, the adakitic rocks in the study area—comprising diorite porphyrite, biotite quartz monzonite porphyry, and the newly identified biotite granite porphyry—are predominantly calc-alk

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6

Murad, Fida, Abdul Ghaffar, Innayat Ullah, Abdul Shakoor Mastoi, and Muhammad Tariq Zaman. "The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan." International Journal of Economic and Environmental Geology 12, no. 1 (2021): 1–8. http://dx.doi.org/10.46660/ijeeg.vol12.iss1.2021.550.

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Subduction related Miocene porphyry type deposits are found in the east-west trending Chagai magmatic belt (CMB) in Pakistan's western margin, Balochistan. This arc exists on the west segment of the Tethyan metallogenic belt in the south-west of Pakistan. Tethyan metallogenic belt is widely spread over 12,000 km from east to west direction from Indochina, Tibet, Pakistan, Iran, Turkey and Alpine mountain range in Europe. During the last thirty to forty years several porphyry deposits have been reported in the Chagai magmatic arc, including the very large Reko Diq H14-H15, large Saindak, Tanjee

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7

Pan, Jun-Yi, Pei Ni, Zhei Chi, Wen-Bin Wang, Wen-Can Zeng, and Kai Xue. "Alunite 40Ar/39Ar and Zircon U-Pb Constraints on the Magmatic-Hydrothermal History of the Zijinshan High-Sulfidation Epithermal Cu-Au Deposit and the Adjacent Luoboling Porphyry Cu-Mo Deposit, South China: Implications for Their Genetic Association." Economic Geology 114, no. 4 (2019): 667–95. http://dx.doi.org/10.5382/econgeo.4658.

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AbstractThe large Zijinshan high-sulfidation epithermal Cu-Au deposit, together with the adjacent Luoboling porphyry Cu-Mo deposit, constitutes a major porphyry-epithermal ore district in South China. Current debate centers on whether the Zijinshan and the adjacent Luoboling deposits are cogenetic or represent separate ore-forming events, which is a question of importance for exploration in the district. In this contribution, the magmatichydrothermal history of the relationship between Zijinshan and Luoboling is reconstructed based on new alunite 40Ar/39Ar ages from Zijinshan and zircon U-Pb a

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8

Lunge, Moira, and Joseph O. Espi. "Trace Element Geochemistry of Chalcopyrites and Pyrites from Golpu and Nambonga North Porphyry Cu-Au Deposits, Wafi-Golpu Mineral District, Papua New Guinea." Geosciences 11, no. 8 (2021): 335. http://dx.doi.org/10.3390/geosciences11080335.

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Studying elemental geochemistry of hypogene sulphides can discriminate the hydrothermal fluids responsible for ore formation. To determine whether Golpu porphyry Cu-Au deposits are related to the Nambonga North porphyry system which is located 2.5 km apart in the Wafi-Golpu Mineral District, Papua New Guinea, we compare the trace element compositions of drill core chalcopyrites and pyrites analysed using Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS). The results for the Golpu chalcopyrites revealed high concentrations of Au, As, Se, Mo, Sb, Te and Bi and lower concentr

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9

Murad, Fida, Abdul Ghaffar, Inayat Ullah, Abdul Shakoor Mastoi, and Muhammad Tariq Zaman. "The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan." International Journal of Economic and Environmental Geology 12, no. 1 (2024): 1–8. http://dx.doi.org/10.46660/ijeeg.v12i1.139.

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Subduction related Miocene porphyry type deposits are found in the east-west trending Chagai magmaticbelt (CMB) in Pakistan's western margin, Balochistan. This arc exists on the west segment of the Tethyan metallogenicbelt in the south-west of Pakistan. Tethyan metallogenic belt is widely spread over 12,000 km from east to westdirection from Indochina, Tibet, Pakistan, Iran, Turkey and Alpine mountain range in Europe. During the last thirty toforty years several porphyry deposits have been reported in the Chagai magmatic arc, including the very large RekoDiq H14-H15, large Saindak, Tanjeel, H3

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10

Byrne, Kevin, Guillaume Lesage, Sarah A. Gleeson, Stephen J. Piercey, Philip Lypaczewski, and Kurt Kyser. "Linking Mineralogy to Lithogeochemistry in the Highland Valley Copper District: Implications for Porphyry Copper Footprints." Economic Geology 115, no. 4 (2020): 871–901. http://dx.doi.org/10.5382/econgeo.4733.

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Abstract The Highland Valley Copper porphyry deposits, hosted in the Late Triassic Guichon Creek batholith in the Canadian Cordillera, are unusual in that some of them formed at depths of at least 4 to 5 km in cogenetic host rocks. Enrichments in ore and pathfinder elements are generally limited to a few hundred meters beyond the pit areas, and the peripheral alteration is restricted to narrow (1–3 cm) halos around a low density of prehnite and/or epidote veinlets. It is, therefore, challenging to recognize the alteration footprint peripheral to the porphyry Cu systems. Here, we document a wor

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11

Lang, Xing Hai, Ju Xing Tang, and Fu Wei Xie. "Elements Spatial Distribution and Ore Prospecting of the No.II Porphyry Copper - Gold Deposit in the Xiongcun District, Tibet." Advanced Materials Research 962-965 (June 2014): 1136–42. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.1136.

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Xiongcun district is located in the western segment of the Gangdese porphyry copper belt, Tibet. Exploration activities in the No.I, No.II and No.III deposits in the past decade suggest that it would be a large prospective for porphyry copper-gold resources. In this paper, we focus on the systematical research of the elements spatial distribution of the No.II porphyry copper-gold deposit in the Xiongcun district. The results show, from center to the outer parts of the orebody, the elements distribution can be divided into Cu, Au, Ag, K, Mo and Ba → Co, Ni and Mn → Na and Ca → Pb, Zn, Cd, Bi, S

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12

Baker, Michael J., Jamie J. Wilkinson, Clara C. Wilkinson, David R. Cooke, and Tim Ireland. "Epidote Trace Element Chemistry as an Exploration Tool in the Collahuasi District, Northern Chile." Economic Geology 115, no. 4 (2020): 749–70. http://dx.doi.org/10.5382/econgeo.4739.

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Abstract The Collahuasi district of northern Chile hosts several late Eocene-early Oligocene world-class porphyry Cu-Mo deposits, including Rosario, Ujina, and Quebrada Blanca deposits, and associated high-sulfidation epithermal mineralization at La Grande. Mineralization is hosted by intermediate to felsic intrusive and volcanic rocks of the upper Paleozoic to Lower Triassic Collahuasi Group, which experienced lower greenschist facies regional metamorphism prior to mineralization. Extensive hydrothermal alteration zones surround the porphyry and epithermal deposits, associated with hypogene o

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13

Byrne, Kevin, Robert B. Trumbull, Guillaume Lesage, et al. "Mineralogical and Isotopic Characteristics of Sodic-Calcic Alteration in the Highland Valley Copper District, British Columbia, Canada: Implications for Fluid Sources in Porphyry Cu Systems." Economic Geology 115, no. 4 (2020): 841–70. http://dx.doi.org/10.5382/econgeo.4740.

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Abstract The Highland Valley Copper porphyry Cu (±Mo) district is hosted in the Late Triassic Guichon Creek batholith in the Canadian Cordillera. Fracture-controlled sodic-calcic alteration is important because it forms a large footprint (34 km2) outside of the porphyry Cu centers. This alteration consists of epidote ± actinolite ± tourmaline veins with halos of K-feldspar–destructive albite (1–20 XAn) ± fine-grained white mica ± epidote. The distribution of sodic-calcic alteration is strongly influenced by near-orthogonal NE- and SE-trending fracture sets and by proximity to granodiorite stoc

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14

Alva-Jimenez, Tatiana, Richard M. Tosdal, John H. Dilles, Gregory Dipple, Adam J. R. Kent, and Scott Halley. "Chemical Variations in Hydrothermal White Mica Across the Highland Valley Porphyry Cu-Mo District, British Columbia, Canada." Economic Geology 115, no. 4 (2020): 903–26. http://dx.doi.org/10.5382/econgeo.4737.

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Abstract Hydrothermal white mica in the Highland Valley district, British Columbia, is present in high-temperature alteration assemblages in early halo veins and in intermediate-temperature sericitic alteration assemblages in D-type veins. Pale-gray white micas characterize early halo veins in the Valley and Bethsaida zone porphyry Cu-Mo deposits, whereas pale-green white micas form texturally similar vein halos along the margin of the Valley deposit and at the Alwin vein. White micas in the Bethlehem porphyry Cu-Mo deposit form part of a sericitic alteration assemblage associated with D-type

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15

Sun, Yuqin, Xin Wang, Yan Zhang, et al. "Cu–S Isotopes of the Main Sulfides and Indicative Significance in the Qibaoshan Cu–Au Polymetallic Ore District, Wulian County, Shandong Province, North China Craton." Minerals 13, no. 6 (2023): 723. http://dx.doi.org/10.3390/min13060723.

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With a focus on the Cu isotope geochemistry of chalcopyrite, this paper analyzed the Cu isotope geochemistry of the Qibaoshan crypto-explosive breccia-type Cu–Au polymetallic ore district in Wulian, Shandong Province, North China Craton (NCC). Combined with the results of the in situ sulfur isotope analysis of sulfides, a certain reference and evidence for the study of the genetic mechanism of the epithermal-porphyry Cu polymetallic metallogenic system were provided. The results of the in situ isotope analysis show that the δ34S values of the main sulfides in the Qibaoshan Cu–Au polymetallic o

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16

Hart-Madigan, Lisa, Jamie J. Wilkinson, Stephanie Lasalle, and Robin N. Armstrong. "U-Pb DATING OF HYDROTHERMAL TITANITE RESOLVES MULTIPLE PHASES OF PROPYLITIC ALTERATION IN THE OYU TOLGOI PORPHYRY DISTRICT, MONGOLIA." Economic Geology 115, no. 8 (2020): 1605–18. http://dx.doi.org/10.5382/econgeo.4780.

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Abstract Oyu Tolgoi is a world-class, Late Devonian porphyry district in southern Mongolia. Because of its age and geodynamic setting, it has undergone a complex geological history that includes major postmineralization magmatic-hydrothermal events in close proximity to the porphyry deposits. The propylitic alteration halos that surround the Cu-Au deposits contain widespread hydrothermal titanite, as do the younger altered volcanic and intrusive rocks. Here, we present a comprehensive laser ablation-inductively coupled plasma-mass spectrometry U-Pb study on in situ, propylitic titanite from th

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17

Meng, Xuyang, Jeremy Richards, Jingwen Mao, et al. "The Tongkuangyu Cu Deposit, Trans-North China Orogen: A Metamorphosed Paleoproterozoic Porphyry Cu Deposit." Economic Geology 115, no. 1 (2020): 51–77. http://dx.doi.org/10.5382/econgeo.4693.

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Abstract The Tongkuangyu copper deposit in the Zhongtiaoshan region, southern Trans-North China orogen, is hosted by a poorly constrained sequence of Paleoproterozoic volcano-sedimentary (quartz-sericite schist and biotite schist) and granitic rocks that have been metamorphosed to lower greenschist facies and variably deformed. The deposit has previously been proposed to be either a porphyry-type or a sediment-hosted stratiform Cu deposit, and its age of formation has been debated. The quartz-sericite schist is interpreted to be a felsic crystal tuff and consists of angular quartz crystals in

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18

Li, Yi, Ke-Zhang Qin, Guo-Xue Song, Yu Fan, Fang-Yue Wang, and Le Wang. "The Genetic Link between Iron-Oxide–Apatite and Porphyry Cu–Au Mineralization: Insight from the Biotite–Pyroxene–Zircon Study of the Nihe Fe Deposit and the Shaxi Cu–Au Deposit in the Lower Yangtze Valley, SE China." Minerals 13, no. 3 (2023): 451. http://dx.doi.org/10.3390/min13030451.

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Different ore deposit types may evolve from a common magmatic-hydrothermal system. Establishing a genetic link between different deposit types in an ore cluster can not only deepen the understanding of the magmatic-hydrothermal mineralization process but can also guide exploration. Both the Nihe iron-oxide–apatite (IOA) deposit and the Shaxi porphyry Cu–Au deposit in the Lower Yangtze Valley, Anhui, Southeast China, formed in the Luzong Cretaceous volcanic basin at ~130 Ma. We examined a temporal–spatial and potential genetic link between these deposits based on stratigraphic lithofacies secti

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Song, Yang, Chao Yang, Shaogang Wei, Huanhuan Yang, Xiang Fang, and Hongtao Lu. "Tectonic Control, Reconstruction and Preservation of the Tiegelongnan Porphyry and Epithermal Overprinting Cu (Au) Deposit, Central Tibet, China." Minerals 8, no. 9 (2018): 398. http://dx.doi.org/10.3390/min8090398.

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The newly discovered Tiegelongnan Cu (Au) deposit is a giant porphyry deposit overprinted by a high-sulfidation epithermal deposit in the western part of the Bangong–Nujiang metallogenic belt, Duolong district, central Tibet. It is mainly controlled by the tectonic movement of the Bangong–Nujiang Oceanic Plate (post-subduction extension). After the closure of the Bangong–Nujiang Ocean, porphyry intrusions emplaced at around 121 Ma in the Tiegelongnan area, which might be the result of continental crust thickening and the collision of Qiangtang and Lhasa terranes, based on the crustal radiogeni

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Imai, Akira, Yukiko Ohbuchi, Takayuki Tanaka, Seiya Morita, and Kentaro Yasunaga. "Characteristics of Porphyry Cu Mineralization at Waisoi (Namosi District), Viti Levu, Fiji." Resource Geology 57, no. 4 (2007): 374–85. http://dx.doi.org/10.1111/j.1751-3928.2007.00031.x.

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21

M�ller, D., D. I. Groves, and P. S. Heithersay. "The shoshonite porphyry Cu-Au association in the Goonumbla District, N.S.W., Australia." Mineralogy and Petrology 51, no. 2-4 (1994): 299–321. http://dx.doi.org/10.1007/bf01159734.

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22

Braxton, David P., David R. Cooke, Allan M. Ignacio, and Patrick J. Waters. "Geology of the Boyongan and Bayugo Porphyry Cu-Au Deposits: An Emerging Porphyry District in Northeast Mindanao, Philippines." Economic Geology 113, no. 1 (2018): 83–131. http://dx.doi.org/10.5382/econgeo.2018.4545.

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23

Hovakimyan, Samvel, Robert Moritz, Rodrik Tayan, Rafael Melkonyan, and Marianna Harutyunyan. "Cenozoic Strike-Slip Tectonics and Structural Controls of Porphyry Cu-Mo and Epithermal Deposits During Geodynamic Evolution of the Southernmost Lesser Caucasus, Tethyan Metallogenic Belt." Economic Geology 114, no. 7 (2019): 1301–37. http://dx.doi.org/10.5382/econgeo.4662.

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Abstract The Zangezur-Ordubad mining district of the southernmost Lesser Caucasus is located in the central segment of the Tethyan metallogenic belt and consists of porphyry Cu-Mo and epithermal Au and base metal systems hosted by the composite Cenozoic Meghri-Ordubad pluton. Ore-hosting structures and magmatic intrusions are predominantly confined to a central N-S–oriented corridor 40 km long and 10 to 12 km wide, located between two regional NNW-oriented right-lateral faults, the Khustup-Giratagh and Salvard-Ordubad faults. The anatomy and kinematics of the main fault network are consistent

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Fadlin, Fadlin, Hernani Nhatinombe, Wildan Hamzah, Ardhan Farisan, Raden Asfaro, and Maulana Aditama. "Excess Alumina of Plagioclase Related to Copper-Gold Enrichment: Study Case at the Humpa Leu East (HLE) Porphyry CU-AU Prospect in HU’U District, Sumbawa Island, Indonesia." Iraqi Geological Journal 57, no. 2B (2024): 188–204. http://dx.doi.org/10.46717/igj.57.2b.13ms-2024-8-23.

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The formation of porphyry copper deposits is controlled by water available in magma to form a deposit since Cu ligands and S have finite solubilities. The high amount of water in magma allows the magma to reach saturation earlier and causes more Au to be drawn from the melt into volatile aqueous phases. High water content in magma is conducive to the migration and enrichment of metal elements, which are very important for mineralization. This study is aimed to examine trace element compositions of plagioclase related to early, intermediate and late causative intrusions of the Humpa Leu East (H

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Bogdanov, K., D. Tsonev, and K. Popov. "MINERAL ASSEMBLAGES AND GENESIS OF THE Cu-Au EPITHERMAL DEPOSITS IN THE SOUTHERN PART OF THE PANAGUYRISHTE ORE DISTRICT, BULGARIA." Bulletin of the Geological Society of Greece 36, no. 1 (2004): 406. http://dx.doi.org/10.12681/bgsg.16726.

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Epithermal Cu-Au deposits hosted within volcanic rocks (Radka, Elshitsa, Krassen) are related to Late Cretaceous andesite-dacite volcanic terrain in the Panagyurishte ore district. The Cu-Au ores are linked by a similar mineralogy and differ by the ratio of tennantite, bornite, enargite and discrete trace minerals of Ga, Ge, In and Bi (e.g., roquesite, germanite, betekhtinite, renierite, vinciennite, aikinite). Bi-Se-Te and Ga-Ge-ln-Sn signature with pronounced Au-enrichment of the bornite rich ores is a characteristic feature underlying the increasing role of the fS2/f02 control during the tr

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Sutarto, Sutarto, Arifudin Idrus, Agung Harijoko, et al. "Hydrothermal Alteration and Mineralization of the Randu Kuning Porphyry Cu-Au and Intermediate Sulphidation Epithermal Au-Base Metals Deposits in Selogiri, Central Java, Indonesia." Journal of Applied Geology 1, no. 1 (2016): 1. http://dx.doi.org/10.22146/jag.26951.

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The Randu Kuning Porphyry Cu-Au prospect area is situated in the Selogiri district, Wonogiri regency, Central Java, Indonesia, about 40 km to the South-East from Solo city, or approximately 70 km east of Yogyakarta city. The Randu Kuning area and its vicinity is a part of the East Java Southern Mountain Zone, mostly occupied by both plutonic and volcanic igneous rocks, volcaniclastic, silisiclastic and carbonate rocks. Magmatism-volcanism products were indicated by the abundant of igneous and volcaniclastic rocks of Mandalika and Semilir Formation. The Alteration zones distribution are general

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Lypaczewski, Philip, Benoit Rivard, Guillaume Lesage, Kevin Byrne, Michael D’Angelo, and Robert G. Lee. "Characterization of Mineralogy in the Highland Valley Porphyry Cu District Using Hyperspectral Imaging, and Potential Applications." Minerals 10, no. 5 (2020): 473. http://dx.doi.org/10.3390/min10050473.

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The Highland Valley Copper (HVC) district in British Columbia, Canada, is host to at least four major porphyry Cu systems: Bethlehem (~209 Ma), and Valley, Lornex, and Highmont (~208 to 207 Ma). High spatial resolution (0.2–1.0 mm/pixel) hyperspectral imagery in the shortwave infrared (SWIR) were acquired on 755 rock samples and 400 m of continuous drill core. Spectral metrics are used to measure the relative abundance of 12 minerals and an additional metric is derived to estimate white mica grain size. In the Valley and Lornex deposits, coarse-grained white mica is associated with mineralizat

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Cooke, David R., Jamie J. Wilkinson, Mike Baker, et al. "Using Mineral Chemistry to Aid Exploration: A Case Study from the Resolution Porphyry Cu-Mo Deposit, Arizona." Economic Geology 115, no. 4 (2020): 813–40. http://dx.doi.org/10.5382/econgeo.4735.

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Abstract The giant, high-grade Resolution porphyry Cu-Mo deposit in the Superior district of Arizona is hosted in Proterozoic and Paleozoic basement and in an overlying Cretaceous volcaniclastic breccia and sandstone package. Resolution has a central domain of potassic alteration that extends more than 1 km outboard of the ore zone, overlapping with a propylitic halo characterized by epidote, chlorite, and pyrite that is particularly well developed in the Laramide volcaniclastic rocks and Proterozoic dolerite sills. The potassic and propylitic assemblages were overprinted in the upper parts of

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Pacey, Adam, Jamie J. Wilkinson, and David R. Cooke. "Chlorite and Epidote Mineral Chemistry in Porphyry Ore Systems: A Case Study of the Northparkes District, New South Wales, Australia." Economic Geology 115, no. 4 (2020): 701–27. http://dx.doi.org/10.5382/econgeo.4700.

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Abstract Propylitic alteration, characterized by the occurrence of chlorite and epidote, is typically the most extensive and peripheral alteration facies developed around porphyry ore deposits. However, exploration within this alteration domain is particularly challenging, commonly owing to weak or nonexistent whole-rock geochemical gradients and the fact that similar assemblages can be developed in other geologic settings, particularly during low-grade metamorphism. We document and interpret systematic spatial trends in the chemistry of chlorite and epidote from propylitic alteration around t

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Perelló, JoséA. "Geology, porphyry CuAu, and epithermal CuAuAg mineralization of the Tombulilato district, North Sulawesi, Indonesia." Journal of Geochemical Exploration 50, no. 1-3 (1994): 221–56. http://dx.doi.org/10.1016/0375-6742(94)90026-4.

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Pan, Zongdong, Hesheng Hou, Wei Fu, Xiaofan Deng, Jiaduo Zhang, and Hengcheng Ying. "Velocity Structure and Cu-Au Mineralization of the Duobaoshan Ore District, NE China: Constrained by First-Arrival Seismic Tomography." Minerals 12, no. 8 (2022): 959. http://dx.doi.org/10.3390/min12080959.

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The genesis of deeply buried deposits in the Duobaoshan ore district, the largest porphyry-related Cu-Mo-Au ore field in northeastern China, is not well understood and their exploration is lacking because the fine velocity structure of this region is not comprehensively understood. Herein, first-arrival seismic travel times were picked along a deep seismic reflection profile and inverted using the tomographic method to obtain a detailed velocity profile of the upper 2900 m of the crust beneath this region. The profile showed that the velocity varied from 1900 to 6100 m/s and that the crust was

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Wu, Mengjuan, Kefa Zhou, Quan Wang, and Jinlin Wang. "Mapping Hydrothermal Zoning Pattern of Porphyry Cu Deposit Using Absorption Feature Parameters Calculated from ASTER Data." Remote Sensing 11, no. 14 (2019): 1729. http://dx.doi.org/10.3390/rs11141729.

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Identifying hydrothermal zoning pattern associated with porphyry copper deposit is important for indicating its economic potential. Traditional approaches like systematic sampling and conventional geological mapping are time-consuming and labor extensive, and with limitations for providing small scale information. Recent developments suggest that remote sensing is a powerful tool for mapping and interpreting the spatial pattern of porphyry Cu deposit. In this study, we integrated in situ spectral measurement taken at the Yudai copper deposit in the Kalatag district, northwestern China, informa

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Orovan, Evan A., David R. Cooke, Anthony C. Harris, Ben Ackerman, and Erin Lawlis. "Geology and Isotope Geochemistry of the Wainaulo Cu-Au Porphyry Deposit, Namosi District, Fiji." Economic Geology 113, no. 1 (2018): 133–61. http://dx.doi.org/10.5382/econgeo.2018.4546.

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Cao, Kang, Zhi-Ming Yang, John Mavrogenes, et al. "Geology and Genesis of the Giant Pulang Porphyry Cu-Au District, Yunnan, Southwest China." Economic Geology 114, no. 2 (2019): 275–301. http://dx.doi.org/10.5382/econgeo.2019.4631.

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Drobe, John, Darryl Lindsay, Holly Stein, and Janet Gabites. "Geology, Mineralization, and Geochronological Constraints of the Mirador Cu-Au Porphyry District, Southeast Ecuador." Economic Geology 108, no. 1 (2013): 11–35. http://dx.doi.org/10.2113/econgeo.108.1.11.

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Tafti, R., J. R. Lang, J. K. Mortensen, J. L. Oliver, and C. M. Rebagliati. "Geology and Geochronology of the Xietongmen (Xiongcun) Cu-Au Porphyry District, Southern Tibet, China." Economic Geology 109, no. 7 (2014): 1967–2001. http://dx.doi.org/10.2113/econgeo.109.7.1967.

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Chen, Yinhan. "On the formation conditions of porphyry Cu-Mo polymetallic deposits in the Xiaosigou district." Chinese Journal of Geochemistry 6, no. 2 (1987): 140–52. http://dx.doi.org/10.1007/bf02872215.

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Tang, Pan, Juxing Tang, Xinghai Lang, et al. "Biotite Geochemistry and Its Implication for the Difference in Mineralization in the Xiongcun Porphyry Cu–Au Ore District, Tibet." Minerals 13, no. 7 (2023): 876. http://dx.doi.org/10.3390/min13070876.

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The Xiongcun Cu–Au ore district is in the southern middle Gangdese Metallogenic Belt, Tibet, and formed during Neo-Tethyan oceanic subduction. The Xiongcun ore district mainly comprises two deposits, the No. I and No. II deposits, which were formed by two individual mineralization events according to deposit geology and Re–Os isotopic dating of molybdenite. The No. I deposit is similar to a reduced porphyry copper–gold deposit, given the widespread occurrence of primary and/or hydrothermal pyrrhotite and common CH4-rich and rare N2-rich fluid inclusions. The No. II deposit, similar to classic

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Feng, Zheng-Zheng, Zhong-Jie Bai, Hong Zhong, Wei-Guang Zhu, and Shi-Ji Zheng. "Genesis of Volcanic Rocks in the Zijinshan Ore District, SE China: Implications for Porphyry-Epithermal Mineralization." Minerals 10, no. 2 (2020): 200. http://dx.doi.org/10.3390/min10020200.

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Volcanic rocks, as the extrusive counterparts of the mineralized intrusions, can provide important information on the magma source, petrogenesis, and metallogenic conditions of the coeval porphyry-epithermal system. Shanghang Basin volcanic rocks are spatially and temporally related to a series of adjacent porphyry-epithermal Cu–Au deposits, and they can be used as a window to study the related deposits. Two laser-ablation–inductively coupled plasma–mass spectrometry zircon U–Pb analyses of the volcanic rocks yield weighted mean ages of ~105 Ma, identical to the age of the coeval porphyry-epit

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Xie, Guiqing, Jingwen Mao, Ruiting Wang, et al. "Origin of the Lengshuigou porphyry–skarn Cu deposit in the Zha-Shan district, South Qinling, central China, and implications for differences between porphyry Cu and Mo deposits." Mineralium Deposita 52, no. 4 (2016): 621–39. http://dx.doi.org/10.1007/s00126-016-0688-2.

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Qi, Huasheng, Sanming Lu, Xiaoyong Yang, et al. "The Role of Magma Mixing in Generating Granodioritic Intrusions Related to Cu–W Mineralization: A Case Study from Qiaomaishan Deposit, Eastern China." Minerals 10, no. 2 (2020): 171. http://dx.doi.org/10.3390/min10020171.

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The newly exploited Qiaomaishan Cu−W deposit, located in the Xuancheng ore district in the MLYRB, is a middle-sized Cu–W skarn-type polymetallic deposit. As Cu–W mineralization is a rare and uncommon type in the Middle-Lower Yangtze River Belt (MLYRB), few studies have been carried out, and the geochemical characteristics and petrogenesis of Qiaomaishan intrusive rocks related to Cu–W mineralization are not well documented. We studied two types of ore-bearing intrusive rocks in the Qiaomaishan region, i.e., pure granodiorite porphyry and granodiorite porphyry with mafic microgranular enclaves

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Tang, Juxing, Xinghai Lang, Fuwei Xie, et al. "Geological characteristics and genesis of the Jurassic No. I porphyry Cu–Au deposit in the Xiongcun district, Gangdese porphyry copper belt, Tibet." Ore Geology Reviews 70 (October 2015): 438–56. http://dx.doi.org/10.1016/j.oregeorev.2015.02.008.

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Zhang, F., B. J. Williamson, H. R. Hughes, and C. V. Ullmann. "Isotopic constraints on the processes favouring endoskarn- over porphyry-style mineralisation in Cu porphyry systems: an example from the Daye district, China." Applied Earth Science 128, no. 2 (2019): 65–67. http://dx.doi.org/10.1080/25726838.2019.1607196.

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Markovic, Sava, Manuel Brunner, Lukas Müller, et al. "Zircon Petrochronology of Au-Rich Porphyry and Epithermal Deposits in the Golden Quadrilateral (Apuseni Mountains, Romania)." Economic Geology 119, no. 4 (2024): 967–88. http://dx.doi.org/10.5382/econgeo.5073.

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Abstract The Golden Quadrilateral of the Apuseni Mountains (Romania) represents the richest Au(-Cu-Te) porphyry and epithermal district of Europe and the Western Tethyan metallogenic belt. The Au(-Cu-Te) mineralization is associated with Neogene calc-alkaline magmatism along graben structures growing during the late stages of the Alpine-Carpathian orogeny. We use zircon petrochronology to study the time-space distribution, sources, composition, and timescales of the Au(-Cu-Te)-mineralizing magmatism and explore its link to regional tectonics. Our own and published U-Pb zircon ages document ore

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Berdnikov, Nikolai, Pavel Kepezhinskas, Natalia Konovalova, and Nikita Kepezhinskas. "Formation of Gold Alloys during Crustal Differentiation of Convergent Zone Magmas: Constraints from an AU-Rich Websterite in the Stanovoy Suture Zone (Russian Far East)." Geosciences 12, no. 3 (2022): 126. http://dx.doi.org/10.3390/geosciences12030126.

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Gold is typically transported by mafic and evolved magmas into the upper crust to be deposited in shallow oxidized porphyry and epithermal environments. However, the magmatic behavior of gold is still poorly understood and warrants further attention. Additional insights into the magmatic evolution of gold and other noble metals can be provided by investigations of primitive convergent zone magmas and products of their differentiation that contain primary-textured Au-alloys. One of the best examples of such Au-rich ultramafic cumulates is the Triassic (232–233 Ma) Ildeus intrusion, which was em

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Lin, Bin, Juxing Tang, Yuchuan Chen, et al. "Geology and geochronology of Naruo large porphyry-breccia Cu deposit in the Duolong district, Tibet." Gondwana Research 66 (February 2019): 168–82. http://dx.doi.org/10.1016/j.gr.2018.07.009.

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Stefanova, Elitsa, Stoyan Georgiev, Irena Peytcheva, et al. "Sulfide Trace Element Signatures and S- and Pb-Isotope Geochemistry of Porphyry Copper and Epithermal Gold-Base Metal Mineralization in the Elatsite–Chelopech Ore Field (Bulgaria)." Minerals 13, no. 5 (2023): 630. http://dx.doi.org/10.3390/min13050630.

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The Elatsite–Chelopech ore field in the northern part of the Panagyurishte district in Central Bulgaria comprises numerous spatially associated porphyry copper and epithermal gold deposits and prospects. In addition to the mineralization and alteration features, trace elements, lead and sulfur isotope signatures of sulfide minerals from porphyry copper, base metal and gold-base metal deposits/prospects have been studied. LA-ICP-MS analyses of pyrite, arsenopyrite and sulfosalt minerals validate them as major carriers for Au, Ag, Sb, Se and Co. Pyrite from the three types of mineralization has

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Anderson, Eric D., Wei Zhou, Yaoguo Li, et al. "Three-dimensional distribution of igneous rocks near the Pebble porphyry Cu-Au-Mo deposit in southwestern Alaska: Constraints from regional-scale aeromagnetic data." GEOPHYSICS 79, no. 2 (2014): B63—B79. http://dx.doi.org/10.1190/geo2013-0326.1.

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Aeromagnetic data helped us to understand the 3D distribution of plutonic rocks near the Pebble porphyry copper deposit in southwestern Alaska, USA. Magnetic susceptibility measurements showed that rocks in the Pebble district are more magnetic than rocks of comparable compositions in the Pike Creek–Stuyahok Hills volcano-plutonic complex. The reduced-to-pole transformation of the aeromagnetic data demonstrated that the older rocks in the Pebble district produce strong magnetic anomaly highs. The tilt derivative transformation highlighted northeast-trending lineaments attributed to Tertiary vo

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Habib, Juhair Al, Lucas Donny Setijadji, Adi Maryono, and Iryanto Rompo. "Identification of Paleovolcanic Centers in the Bima District, East Sumbawa Island (Indonesia) as Guidance for Future Exploration of Cu-Au Deposits." Journal of Applied Geology 9, no. 1 (2024): 64. http://dx.doi.org/10.22146/jag.98713.

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The formation of Cu-Au mineralization, such as porphyry and epithermal deposits, is strongly associated with volcanic processes in specific tectonic settings, such as subduction zones. The identification of the presence of ancient volcanoes is one of the important steps to finding mineral deposits. This study aims to identify the presence of ancient volcanoes in the Bima District, eastern part of Sumbawa Island, as a step toward determining the potential indication of Cu-Au mineralization. The methods used in this research consist of a literature study, image analysis and remote sensing, field

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Groves, David I., Liang Zhang, and M. Santosh. "Subduction, mantle metasomatism, and gold: A dynamic and genetic conjunction." GSA Bulletin 132, no. 7-8 (2019): 1419–26. http://dx.doi.org/10.1130/b35379.1.

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Abstract Global gold deposit classes are enigmatic in relation to first-order tectonic scale, leading to controversial genetic models and exploration strategies. Traditionally, hydrothermal gold deposits that formed through transport and deposition from auriferous ore fluids are grouped into specific deposit types such as porphyry, skarn, high- and low-sulfidation–type epithermal, gold-rich volcanogenic massive sulfide (VMS), Carlin-type, orogenic, and iron-oxide copper-gold (IOCG), and intrusion-related gold deposits (IRGDs). District-scale mineral system approaches propose interrelated group

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