Fluid Inclusions and C–H–O–S–Pb Isotopes of the Huoluotai Porphyry Cu (Mo) Deposit in the Northern Great Xing’an Range, NE China: Implications for Ore Genesis
The Huoluotai Cu (Mo) deposit is a recently discovered porphyry Cu deposit in the northern Great Xing’an Range, NE China. Fluid inclusion (FI) micro-thermometry results and the C–H–O–S–Pb isotope compositions of the Huoluotai Cu (Mo) deposit are presented in this study. The ore-forming process consi...
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MDPI AG
2022-08-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/9/1072 |
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| author | Yonggang Sun Bile Li Xusheng Chen Fanbo Meng Qingfeng Ding Ye Qian Linlin Wang |
| author_facet | Yonggang Sun Bile Li Xusheng Chen Fanbo Meng Qingfeng Ding Ye Qian Linlin Wang |
| author_sort | Yonggang Sun |
| collection | DOAJ |
| description | The Huoluotai Cu (Mo) deposit is a recently discovered porphyry Cu deposit in the northern Great Xing’an Range, NE China. Fluid inclusion (FI) micro-thermometry results and the C–H–O–S–Pb isotope compositions of the Huoluotai Cu (Mo) deposit are presented in this study. The ore-forming process consists of the sulfide-barren quartz stage (I), the quartz + chalcopyrite ± pyrite ± molybdenite stage (II), the quartz + polymetallic sulfide stage (III), and the quartz + calcite ± pyrite ± fluorite stage (IV). Cu mineralization occurred mainly in stage II. Four types of FIs were recognized: liquid-rich two-phase FIs (L-type), vapor-rich two-phase FIs (V-type), daughter-mineral-bearing three-phase FIs (S-type), and CO<sub>2</sub>-bearing FIs (C-type). In stage I, the ore-forming fluids belong to an H<sub>2</sub>O−NaCl−CO<sub>2</sub> system. In stages II, III, and IV, the ore-forming fluids belong to an H<sub>2</sub>O−NaCl system. The results of the FI micro-thermometry and H–O isotope analysis show that the ore-forming fluids originated from a magmatic origin in stage I and mixed with meteoric water from stages II to IV. The S–Pb isotope results suggest that the source of the ore-forming materials has the characteristics of a crust–mantle-mixing origin. Fluid boiling occurred in stages I and II. The FI micro-thermometric data further show that Cu was mainly deposited below 400 °C in stage II, suggesting that fluid boiling occurring below 400 °C may be the primary factor for Cu precipitation in the Huoluotai Cu (Mo) deposit. |
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| spelling | doaj.art-85540f9a21254c6e8582ccffb757787a2023-11-23T17:54:58ZengMDPI AGMinerals2075-163X2022-08-01129107210.3390/min12091072Fluid Inclusions and C–H–O–S–Pb Isotopes of the Huoluotai Porphyry Cu (Mo) Deposit in the Northern Great Xing’an Range, NE China: Implications for Ore GenesisYonggang Sun0Bile Li1Xusheng Chen2Fanbo Meng3Qingfeng Ding4Ye Qian5Linlin Wang6School of Resources and Civil Engineering, Suzhou University, Suzhou 234000, ChinaCollege of Earth Sciences, Jilin University, Changchun 130061, ChinaQiqihaer Institute of Geological Exploration, Heilongjiang 161006, ChinaQiqihaer Institute of Geological Exploration, Heilongjiang 161006, ChinaCollege of Earth Sciences, Jilin University, Changchun 130061, ChinaCollege of Earth Sciences, Jilin University, Changchun 130061, ChinaCollege of Earth Sciences, Jilin University, Changchun 130061, ChinaThe Huoluotai Cu (Mo) deposit is a recently discovered porphyry Cu deposit in the northern Great Xing’an Range, NE China. Fluid inclusion (FI) micro-thermometry results and the C–H–O–S–Pb isotope compositions of the Huoluotai Cu (Mo) deposit are presented in this study. The ore-forming process consists of the sulfide-barren quartz stage (I), the quartz + chalcopyrite ± pyrite ± molybdenite stage (II), the quartz + polymetallic sulfide stage (III), and the quartz + calcite ± pyrite ± fluorite stage (IV). Cu mineralization occurred mainly in stage II. Four types of FIs were recognized: liquid-rich two-phase FIs (L-type), vapor-rich two-phase FIs (V-type), daughter-mineral-bearing three-phase FIs (S-type), and CO<sub>2</sub>-bearing FIs (C-type). In stage I, the ore-forming fluids belong to an H<sub>2</sub>O−NaCl−CO<sub>2</sub> system. In stages II, III, and IV, the ore-forming fluids belong to an H<sub>2</sub>O−NaCl system. The results of the FI micro-thermometry and H–O isotope analysis show that the ore-forming fluids originated from a magmatic origin in stage I and mixed with meteoric water from stages II to IV. The S–Pb isotope results suggest that the source of the ore-forming materials has the characteristics of a crust–mantle-mixing origin. Fluid boiling occurred in stages I and II. The FI micro-thermometric data further show that Cu was mainly deposited below 400 °C in stage II, suggesting that fluid boiling occurring below 400 °C may be the primary factor for Cu precipitation in the Huoluotai Cu (Mo) deposit.https://www.mdpi.com/2075-163X/12/9/1072northern Great Xing’an RangeHuoluotai Cu (Mo) depositfluid inclusionsC–H–O–S–Pb isotopefluid boiling |
| spellingShingle | Yonggang Sun Bile Li Xusheng Chen Fanbo Meng Qingfeng Ding Ye Qian Linlin Wang Fluid Inclusions and C–H–O–S–Pb Isotopes of the Huoluotai Porphyry Cu (Mo) Deposit in the Northern Great Xing’an Range, NE China: Implications for Ore Genesis Minerals northern Great Xing’an Range Huoluotai Cu (Mo) deposit fluid inclusions C–H–O–S–Pb isotope fluid boiling |
| title | Fluid Inclusions and C–H–O–S–Pb Isotopes of the Huoluotai Porphyry Cu (Mo) Deposit in the Northern Great Xing’an Range, NE China: Implications for Ore Genesis |
| title_full | Fluid Inclusions and C–H–O–S–Pb Isotopes of the Huoluotai Porphyry Cu (Mo) Deposit in the Northern Great Xing’an Range, NE China: Implications for Ore Genesis |
| title_fullStr | Fluid Inclusions and C–H–O–S–Pb Isotopes of the Huoluotai Porphyry Cu (Mo) Deposit in the Northern Great Xing’an Range, NE China: Implications for Ore Genesis |
| title_full_unstemmed | Fluid Inclusions and C–H–O–S–Pb Isotopes of the Huoluotai Porphyry Cu (Mo) Deposit in the Northern Great Xing’an Range, NE China: Implications for Ore Genesis |
| title_short | Fluid Inclusions and C–H–O–S–Pb Isotopes of the Huoluotai Porphyry Cu (Mo) Deposit in the Northern Great Xing’an Range, NE China: Implications for Ore Genesis |
| title_sort | fluid inclusions and c h o s pb isotopes of the huoluotai porphyry cu mo deposit in the northern great xing an range ne china implications for ore genesis |
| topic | northern Great Xing’an Range Huoluotai Cu (Mo) deposit fluid inclusions C–H–O–S–Pb isotope fluid boiling |
| url | https://www.mdpi.com/2075-163X/12/9/1072 |
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