In-situ LA–ICP–MS U–Pb geochronology and trace elements analysis of polygenetic titanite from the giant Beiya gold–polymetallic deposit in Yunnan Province, Southwest China

Fu, Yu; Sun, Xiaoming; Zhou, Haoyang; Lin, Huan; Yang, Tianjian

doi:10.1016/j.oregeorev.2016.02.001

Cited by 85 publications

(26 citation statements)

References 49 publications

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“…As a whole, the skarn mineralization in the Beiya and Machangqing deposits are synchronous and temporally related to the magmatic hydrothermal activity in the Himalayan orogenic event. Besides, the marked similarity between our new Beiya allanite U-Th-Pb age (33.4 ± 4.6 Ma) and the published Beiya titanite U-Pb age (33.1 ± 1.0 Ma) [61] suggests that our U-Th-Pb dating and data reduction approach are reliable.…”

Section: Age Of Skarn Mineralization In the Beiya And Machangqing Depsupporting

confidence: 79%

“…33.1-34.1 Ma [61]. In this study, the skarn mineralization is determined to be largely coeval with the Au mineralization, and slightly younger than the porphyry emplacement.…”

Section: Age Of Skarn Mineralization In the Beiya And Machangqing Depmentioning

confidence: 59%

“…Most of the porphyries were emplaced at around 36.9 to 33.3 Ma [24][25][26]28,[56][57][58][59][60], except for the quartz albite porphyry (65 Ma) and the biotite orthoclase porphyry (3.8 Ma) [45]. The quartz syenite porphyry in the Beiya deposit has been LA-ICP-MS zircon U-Pb dated to be 36.07 ± 0.43 Ma [24], and the retrograde-stage hydrothermal titanite yielded a weighted average 206 Pb/ 238 U age of 33.1 ± 1.0 Ma [61]. Molybdenite from the Beiya Au skarn has yielded a Re-Os isochron age of 34.7 ± 1.6 Ma, which constrains the age of the quartz-sulfide stage mineralization [24].…”

Section: Beiyamentioning

confidence: 99%

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LA-ICP-MS U-Th-Pb Dating and Trace Element Geochemistry of Allanite: Implications on the Different Skarn Metallogenesis between the Giant Beiya Au and Machangqing Cu-Mo-(Au) Deposits in Yunnan, SW China

Sun

et al. 2017

Minerals

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Abstract:The giant Beiya Au skarn deposit and Machangqing porphyry Cu-Mo-(Au) deposit are located in the middle part of the Jinshajiang-Ailaoshan alkaline porphyry metallogenic belt. The Beiya deposit is the largest Au skarn deposit in China, whilst the Machangqing deposit comprises a well-developed porphyry-skarn-epithermal Cu-Mo-(Au) mineral system. In this paper, we present new allanite U-Th-Pb ages and trace element geochemical data from the two deposits and discuss their respective skarn metallogenesis. Based on the mineral assemblage, texture and Th/U ratio, the allanite from the Beiya and Machangqing deposits are likely hydrothermal rather than magmatic. Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) allanite U-Th-Pb dating has yielded Th-Pb isochron ages of 33.4 ± 4.6 Ma (MSWD = 0.22) (Beiya) and 35.4 ± 9.8 Ma (MSWD = 0.26) (Machangqing), representing the retrograde alteration and magnetite skarn mineralization age of the two deposits. The Beiya and Machangqing alkali porphyry-related mineralization are synchronous and genetically linked to the magmatic hydrothermal activities of the Himalayan orogenic event. Major and trace element compositions reveal that the Beiya allanite has higher Fe 3+ /(Fe 3+ + Fe 2+ ) ratios, U content and Th content than the Machangqing allanite, which indicate a higher oxygen fugacity and F content for the ore-forming fluids at Beiya. Such differences in the ore-forming fluids may have contributed to the different metallogenic scales and metal types in the Beiya and Machangqing deposit.

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Section: Age Of Skarn Mineralization In the Beiya And Machangqing Depsupporting

confidence: 79%

“…33.1-34.1 Ma [61]. In this study, the skarn mineralization is determined to be largely coeval with the Au mineralization, and slightly younger than the porphyry emplacement.…”

Section: Age Of Skarn Mineralization In the Beiya And Machangqing Depmentioning

confidence: 59%

Section: Beiyamentioning

confidence: 99%

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LA-ICP-MS U-Th-Pb Dating and Trace Element Geochemistry of Allanite: Implications on the Different Skarn Metallogenesis between the Giant Beiya Au and Machangqing Cu-Mo-(Au) Deposits in Yunnan, SW China

Sun

et al. 2017

Minerals

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“…Several recent publications have explored minerals for which little or no LA-ICP-MS trace element data have been available until now: carbonates [157,158], titanite [98,159], calcite and tourmaline [90], Ti-spinels and perovskite [160], or native gold [161]. Despite these efforts, the distribution of trace elements in certain matrices remains relatively poorly understudied.…”

Section: Current Trends and Future Opportunitiesmentioning

confidence: 99%

Trace Element Analysis of Minerals in Magmatic-Hydrothermal Ores by Laser Ablation Inductively-Coupled Plasma Mass Spectrometry: Approaches and Opportunities

et al. 2016

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Laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) has rapidly established itself as the method of choice for generation of multi-element datasets for specific minerals, with broad applications in Earth science. Variation in absolute concentrations of different trace elements within common, widely distributed phases, such as pyrite, iron-oxides (magnetite and hematite), and key accessory minerals, such as apatite and titanite, can be particularly valuable for understanding processes of ore formation, and when trace element distributions vary systematically within a mineral system, for a vector approach in mineral exploration. LA-ICP-MS trace element data can assist in element deportment and geometallurgical studies, providing proof of which minerals host key elements of economic relevance, or elements that are deleterious to various metallurgical processes. This contribution reviews recent advances in LA-ICP-MS methodology, reference standards, the application of the method to new mineral matrices, outstanding analytical uncertainties that impact on the quality and usefulness of trace element data, and future applications of the technique. We illustrate how data interpretation is highly dependent on an adequate understanding of prevailing mineral textures, geological history, and in some cases, crystal structure.

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“…, Fu et al . ). Meanwhile, in situ Sm‐Nd isotopic analysis by multi‐collector (MC) ICP‐MS has also been recently proved feasible for titanite as well as other LREE‐enriched accessory minerals (Foster and Vance , McFarlane and McCulloch , Yang et al .…”

mentioning

confidence: 97%

Natural Titanite Reference Materials forIn SituU‐Pb and Sm‐Nd Isotopic Measurements byLA‐(MC)‐ICP‐MS

Evans

Ling

Yang

et al. 2019

Geostandard Geoanalytic Res

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Titanite is a common accessory mineral that preferentially incorporates considerable amounts of U and light rare earth elements in its structure, making it a versatile mineral for in situ U‐Pb dating and Sm‐Nd isotopic measurement. Here, we present in situ U‐Pb ages and Sm‐Nd isotope measurement results for four well‐known titanite reference materials (Khan, BLR‐1, OLT1 and MKED1) and eight titanite crystals that could be considered potential reference material candidates (Ontario, YQ‐82, T3, T4, TLS‐36, NW‐IOA, Pakistan and C253), with ages ranging from ~ 20 Ma to ~ 1840 Ma. Results indicate that BLR‐1, OLT1, Ontario, MKED1 and T3 titanite have relatively homogeneous Sm‐Nd isotopes and low common Pb and thus can serve as primary reference materials for U‐Pb and Sm‐Nd microanalysis. YQ‐82 and T4 titanite can be used as secondary reference materials for in situ U‐Pb analysis because of their low common Pb. However, internal structures and mineral inclusions in YQ‐82 will require careful selection of suitable target domains. Pakistan titanite is almost concordant with an age of 21 Ma and can be used as a reference material when dating Cenozoic titanite samples.

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In-situ LA–ICP–MS U–Pb geochronology and trace elements analysis of polygenetic titanite from the giant Beiya gold–polymetallic deposit in Yunnan Province, Southwest China

Cited by 85 publications

References 49 publications

LA-ICP-MS U-Th-Pb Dating and Trace Element Geochemistry of Allanite: Implications on the Different Skarn Metallogenesis between the Giant Beiya Au and Machangqing Cu-Mo-(Au) Deposits in Yunnan, SW China

LA-ICP-MS U-Th-Pb Dating and Trace Element Geochemistry of Allanite: Implications on the Different Skarn Metallogenesis between the Giant Beiya Au and Machangqing Cu-Mo-(Au) Deposits in Yunnan, SW China

Trace Element Analysis of Minerals in Magmatic-Hydrothermal Ores by Laser Ablation Inductively-Coupled Plasma Mass Spectrometry: Approaches and Opportunities

Natural Titanite Reference Materials forIn SituU‐Pb and Sm‐Nd Isotopic Measurements byLA‐(MC)‐ICP‐MS

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