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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.10
- 수록면
- 605 - 617 (13page)
- DOI
- 10.1007/s12303-020-0062-3
이용수
초록· 키워드
오류제보하기
In recent years, several Nb-rare-earth-element (REE) deposits have been discovered in trachyte from the Pingli?Zhenping area of the North Daba Mountain. Of these, the Zhujiayuan Nb (-REE) deposit is particularly rich in monazite. In this study, electron probe microanalysis (EPMA) and laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) were used to better understand the genesis of the deposit and constrain the timing of Nb-REE mineralization. The results show that most monazite in the deposit is closely related to various alteration minerals (biotite, sericite, albite, quartz, pyrite, and calcite), and monazite often has a lower ThO2 content (0.09?1.32 wt%), indicating its hydrothermal origin. Monazite and the dominant Nb-bearing mineral (columbite) have a close paragenetic relationship, indicating that Nb and REE were mineralized in the same period. LA-ICP-MS U-Pb dating on hydrothermal monazite grains shows a weighted average 206Pb/238U age of 237.2 ± 7.9 Ma, which represents the timing of REE mineralization. The origin of monazite, in combination with the alteration mineralogy and ore-forming age, suggests that fluid exsolved from the Early Mesozoic alkaline felsic melt induced widespread hydrothermal alteration and the formation of the Zhujiayuan Nb-REE deposit.
목차
등록된 정보가 없습니다.
참고문헌 (96)
참고문헌 신청
Aleinikoff, J. N. / 2006 / Deciphering igneous and metamorphic events in high-grade rocks of the Wilmington Complex, Delaware: morphology, cathodoluminescence and backscattered electron zoning, and SHRIMP U-Pb geochronology of zircon and monazite / Geological Society of America Bulletin 118:39~64
Broska, I. / 2005 / Alteration and breakdown of xenotime-(Y) and monazite-(Ce) in granitic rocks of the Western Carpathians, Slovakia / Lithos 82:71~83
Cimen, O. / 2018 / Boron, carbon, oxygen and radiogenic isotope investigation of carbonatite from the Miaoya complex, central China: evidences for late-stage REE hydrothermal event and mantle source heterogeneity / Lithos 322:225~237
Dilles, J.H. / 1992 / Wall-rock alteration and hydrothermal flow paths about the Ann-Mason porphyry copper deposit, Nevada; a 6-km vertical reconstruction / Economic Geology 87:1963~2001
Dong, Y. P. / 1998 / Geochemistry of the Caledonian basic volcanic rocks in the south margin of Qinling orogenic belt and their tectonic implications / Geochimaca 5:432~441
Broska, I. / 2005 / Alteration and breakdown of xenotime-(Y) and monazite-(Ce) in granitic rocks of the Western Carpathians, Slovakia / Lithos 82:71~83
Cimen, O. / 2018 / Boron, carbon, oxygen and radiogenic isotope investigation of carbonatite from the Miaoya complex, central China: evidences for late-stage REE hydrothermal event and mantle source heterogeneity / Lithos 322:225~237
Dilles, J.H. / 1992 / Wall-rock alteration and hydrothermal flow paths about the Ann-Mason porphyry copper deposit, Nevada; a 6-km vertical reconstruction / Economic Geology 87:1963~2001
Dong, Y. P. / 1998 / Geochemistry of the Caledonian basic volcanic rocks in the south margin of Qinling orogenic belt and their tectonic implications / Geochimaca 5:432~441
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