Texture and trace element characteristics of quartz in the Dongyuan porphyry W deposit, eastern China
Most W mineralization in the world is genetically related with highly fractionated granites, but little is known about ore-forming fluid evolution of W mineralization associated with weakly fractionated granites. To reveal the ore-forming fluid evolution of W mineralization related to the weakly fra...
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Elsevier
2023-12-01
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| Series: | Solid Earth Sciences |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2451912X23000405 |
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| author | Liu Yang Yuanyuan Tian Quanzhong Li Jun Yan Jiancheng Xie |
| author_facet | Liu Yang Yuanyuan Tian Quanzhong Li Jun Yan Jiancheng Xie |
| author_sort | Liu Yang |
| collection | DOAJ |
| description | Most W mineralization in the world is genetically related with highly fractionated granites, but little is known about ore-forming fluid evolution of W mineralization associated with weakly fractionated granites. To reveal the ore-forming fluid evolution of W mineralization related to the weakly fractionated granites, a combined study of field and petrographic observations, mineralogical, morphological, and in-situ geochemical data of different-type quartz from Dongyuan porphyry W deposit in the world-class Jiangnan W belt, China, was carried out. The petrographic observation and cathodoluminescence (CL) imaging revealed the quartz in the Dongyuan W deposit can be divided into hydrothermal quartz (Qz1 with core-edge structure, and Qz2 with oscillating zone) in the mineralized alteration zone, and magmatic quartz (Qz3 with inherited core) in granodiorite porphyry. The LA-ICP-MS results of the Dongyuan quartz samples show that Al may enter the quartz structure with trivalent Al3+ instead of Si4+, monovalent alkali metals and bivalent (Ge2+, Sr2+) cations is mainly of charge compensators in quartz, while Ti possibly is in the form of microinclusions of titanium-containing minerals in quartz. The integrated interpretation of the trace element compositions (e.g., Al and Ti contents, Al/Na ratios) and CL texture of quartz indicate high temperature (>400 °C) and uniform Al-rich acidic fluid are conducive to W precipitation of the Dongyuan deposit. Furthermore, trace element compositions (e.g., Ge, Al) and micro-textures of quartz have the potential for distinguishing magmatic and hydrothermal quartz in the Dongyuan W deposit. |
| first_indexed | 2024-03-08T21:12:28Z |
| format | Article |
| id | doaj.art-7adb7abb7e0d4f2dba742ccb696c4ed8 |
| institution | Directory Open Access Journal |
| issn | 2451-912X |
| language | English |
| last_indexed | 2024-03-08T21:12:28Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Solid Earth Sciences |
| spelling | doaj.art-7adb7abb7e0d4f2dba742ccb696c4ed82023-12-22T05:33:51ZengElsevierSolid Earth Sciences2451-912X2023-12-0184305318Texture and trace element characteristics of quartz in the Dongyuan porphyry W deposit, eastern ChinaLiu Yang0Yuanyuan Tian1Quanzhong Li2Jun Yan3Jiancheng Xie4School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, ChinaSchool of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, ChinaSchool of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, ChinaSchool of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, ChinaCorresponding author.; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, ChinaMost W mineralization in the world is genetically related with highly fractionated granites, but little is known about ore-forming fluid evolution of W mineralization associated with weakly fractionated granites. To reveal the ore-forming fluid evolution of W mineralization related to the weakly fractionated granites, a combined study of field and petrographic observations, mineralogical, morphological, and in-situ geochemical data of different-type quartz from Dongyuan porphyry W deposit in the world-class Jiangnan W belt, China, was carried out. The petrographic observation and cathodoluminescence (CL) imaging revealed the quartz in the Dongyuan W deposit can be divided into hydrothermal quartz (Qz1 with core-edge structure, and Qz2 with oscillating zone) in the mineralized alteration zone, and magmatic quartz (Qz3 with inherited core) in granodiorite porphyry. The LA-ICP-MS results of the Dongyuan quartz samples show that Al may enter the quartz structure with trivalent Al3+ instead of Si4+, monovalent alkali metals and bivalent (Ge2+, Sr2+) cations is mainly of charge compensators in quartz, while Ti possibly is in the form of microinclusions of titanium-containing minerals in quartz. The integrated interpretation of the trace element compositions (e.g., Al and Ti contents, Al/Na ratios) and CL texture of quartz indicate high temperature (>400 °C) and uniform Al-rich acidic fluid are conducive to W precipitation of the Dongyuan deposit. Furthermore, trace element compositions (e.g., Ge, Al) and micro-textures of quartz have the potential for distinguishing magmatic and hydrothermal quartz in the Dongyuan W deposit.http://www.sciencedirect.com/science/article/pii/S2451912X23000405Cathodoluminescence textureTrace elementsQuartzDongyuan W depositSouthern Anhui Province |
| spellingShingle | Liu Yang Yuanyuan Tian Quanzhong Li Jun Yan Jiancheng Xie Texture and trace element characteristics of quartz in the Dongyuan porphyry W deposit, eastern China Solid Earth Sciences Cathodoluminescence texture Trace elements Quartz Dongyuan W deposit Southern Anhui Province |
| title | Texture and trace element characteristics of quartz in the Dongyuan porphyry W deposit, eastern China |
| title_full | Texture and trace element characteristics of quartz in the Dongyuan porphyry W deposit, eastern China |
| title_fullStr | Texture and trace element characteristics of quartz in the Dongyuan porphyry W deposit, eastern China |
| title_full_unstemmed | Texture and trace element characteristics of quartz in the Dongyuan porphyry W deposit, eastern China |
| title_short | Texture and trace element characteristics of quartz in the Dongyuan porphyry W deposit, eastern China |
| title_sort | texture and trace element characteristics of quartz in the dongyuan porphyry w deposit eastern china |
| topic | Cathodoluminescence texture Trace elements Quartz Dongyuan W deposit Southern Anhui Province |
| url | http://www.sciencedirect.com/science/article/pii/S2451912X23000405 |
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