The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan
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...
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| Format: | Article |
| Language: | English |
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Society of Economic Geologists and Mineral Technologists
2021-02-01
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| Series: | International Journal of Economic and Environment Geology |
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| Online Access: | https://www.econ-environ-geol.org/index.php/ojs/article/view/550/346 |
| _version_ | 1818437855489294336 |
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| author | Fida Murad, Abdul Ghaffar, Innayat Ullah, Abdul Shakoor Mastoi, Muhammad Tariq Zaman |
| author_facet | Fida Murad, Abdul Ghaffar, Innayat Ullah, Abdul Shakoor Mastoi, Muhammad Tariq Zaman |
| author_sort | Fida Murad, Abdul Ghaffar, Innayat Ullah, Abdul Shakoor Mastoi, Muhammad Tariq Zaman |
| collection | DOAJ |
| description | 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, Tanjeel, H35, H8 and medium Dasht-e-Kain porphyry deposits and many small porphyry copper deposits. These porphyry deposits were developed within the phase of calc-alkaline type magmatism in the Chagai arc. Tonalite, quartz diorite, and monzonite host the porphyry deposits within the adjacent sedimentary wall rock units of Sinjrani Volcanic Group, Juzzak, Saindak, and Amalaf Formations. The concentric zonal pattern of hydrothermal alteration in these porphyry deposits of the Chagai magmatic arc follows the world's major porphyry deposits' alteration pattern. Zones of hydrothermal alteration from distal to proximal part includesa potassic alteration, sericitic-clay-chlorite alteration, sericitic alteration, argillic alteration and propylitic alteration. Major ore mineralization in these deposits is of copper, gold, silver, molybdenum, and minor constituents of other base metals that have been reported to occur within hydrothermal alteration zones in the Miocene porphyry Chagai magmatic arc. |
| first_indexed | 2024-12-14T17:31:18Z |
| format | Article |
| id | doaj.art-4edf9efe2b9b46c69093bcb3128d7039 |
| institution | Directory Open Access Journal |
| issn | 2223-957X |
| language | English |
| last_indexed | 2024-12-14T17:31:18Z |
| publishDate | 2021-02-01 |
| publisher | Society of Economic Geologists and Mineral Technologists |
| record_format | Article |
| series | International Journal of Economic and Environment Geology |
| spelling | doaj.art-4edf9efe2b9b46c69093bcb3128d70392022-12-21T22:53:05ZengSociety of Economic Geologists and Mineral TechnologistsInternational Journal of Economic and Environment Geology2223-957X2021-02-0112010108https://doi.org/10.46660/ijeeg.Vol12.Iss1.2021.550The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, PakistanFida Murad, Abdul Ghaffar, Innayat Ullah, Abdul Shakoor Mastoi, Muhammad Tariq Zaman0Centre of Excellence in Mineralogy, University of Balochistan, Quetta, Pakistan.Department of Earth Sciences, Kunming University of Science and Technology, Kunming, China,Department of Geology, University of Karachi, Pakistan,Centre for Pure and Applied Geology,University of Sindh, Jamshoro, Pakistan.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, Tanjeel, H35, H8 and medium Dasht-e-Kain porphyry deposits and many small porphyry copper deposits. These porphyry deposits were developed within the phase of calc-alkaline type magmatism in the Chagai arc. Tonalite, quartz diorite, and monzonite host the porphyry deposits within the adjacent sedimentary wall rock units of Sinjrani Volcanic Group, Juzzak, Saindak, and Amalaf Formations. The concentric zonal pattern of hydrothermal alteration in these porphyry deposits of the Chagai magmatic arc follows the world's major porphyry deposits' alteration pattern. Zones of hydrothermal alteration from distal to proximal part includesa potassic alteration, sericitic-clay-chlorite alteration, sericitic alteration, argillic alteration and propylitic alteration. Major ore mineralization in these deposits is of copper, gold, silver, molybdenum, and minor constituents of other base metals that have been reported to occur within hydrothermal alteration zones in the Miocene porphyry Chagai magmatic arc.https://www.econ-environ-geol.org/index.php/ojs/article/view/550/346chagai magmatic beltporphyryhydrothermal alterationmineralization |
| spellingShingle | Fida Murad, Abdul Ghaffar, Innayat Ullah, Abdul Shakoor Mastoi, 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 Environment Geology chagai magmatic belt porphyry hydrothermal alteration mineralization |
| title | The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan |
| title_full | The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan |
| title_fullStr | The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan |
| title_full_unstemmed | The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan |
| title_short | The Alteration and Mineralization Characteristics of Miocene Porphyry Cu-Au Deposits of Chagai Magmatic Belt, District Chagai, Balochistan, Pakistan |
| title_sort | alteration and mineralization characteristics of miocene porphyry cu au deposits of chagai magmatic belt district chagai balochistan pakistan |
| topic | chagai magmatic belt porphyry hydrothermal alteration mineralization |
| url | https://www.econ-environ-geol.org/index.php/ojs/article/view/550/346 |
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