Textural and compositional evolution of niobium minerals in the Miaoya carbonatite-hosted REE-Nb deposit from the South Qinling Orogen of central China

Ying, Yuancan; Chen, Wei; Chakhmouradian, Anton R.; Zhao, Kui-Dong; Jiang, Shao‐Yong

doi:10.1007/s00126-022-01126-y

Cited by 14 publications

(2 citation statements)

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“…(Zhang et al 2019a;Ying et al 2020;Ma et al 2021;Su et al 2022). However, the relative roles of the magmatic and late hydrothermal processes on producing the diverse Nb mineralization in both deposits are currently not fully understood (Walter et al 2018;Ying et al 2017Ying et al , 2023Wu et al 2021). In the following sub-sections, we will discuss the magmatic and hydrothermal controls on the diverse Nb mineralization styles in the two deposits.…”

Section: Bulk-sample Major and Trace Elemental Compositionsmentioning

confidence: 99%

Magmatic and hydrothermal controls on diverse Nb mineralization associated with carbonatite-alkaline complexes in the southern Qinling orogenic belt, Central China

Ma,

Chen,

Tang

2024

American Mineralogist

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Although carbonatite-alkaline complexes are the primary source of the world's Niobium (Nb) supply, the mineralization style is largely variable in these complexes and the processes behind are still poorly understood. Exemplifying with the ~430 Ma Miaoya and Shaxiongdong carbonatite-syenite complexes in the southern Qinling orogenic belt, central China, our new observations show that Nb mineralization in these two deposits is persuasively throughout the entire complexes on both syenite and carbonatite in disseminated form. Both the magmatic and hydrothermal processes have attributed to Nb mineralization in both deposits, despite different in the mineralization style. The Nb-bearing minerals in the mineralized Miaoya syenites include magmatic U-poor pyrochlore, rutile, and ilmenite with minor amounts of columbite, and hydrothermal columbite and rutile, whereas those in the mineralized carbonatites are mainly magmatic U-poor pyrochlore, uranpyrochlore, U-rich betafite, and rutile with minor amounts columbite, and hydrothermal columbite and rutile. On the other hand, the Nb-bearing minerals in the mineralized Shaxiongdong syenites include magmatic U-poor pyrochlore, titanite, rutile, and ilmenite, and hydrothermal fersmite, rutile, and ilmenite, whereas those in the mineralized carbonatites are mainly magmatic U-poor pyrochlore without any hydrothermal Nb-bearing minerals. Field observations, whole-rock chemical and Sr-Nd isotopic compositions strongly constrained that assimilation of U-rich rocks (e.g., the hosting Yaolinghe and Meiziya Groups) and magma differentiation are responsible for diverse magmatic Nb mineralization in the two deposits. On the other hand, the diverse This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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Section: Bulk-sample Major and Trace Elemental Compositionsmentioning

confidence: 99%

Magmatic and hydrothermal controls on diverse Nb mineralization associated with carbonatite-alkaline complexes in the southern Qinling orogenic belt, Central China

Ma,

Chen,

Tang

2024

American Mineralogist

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“…Niobium and tantalum (Nb-Ta) are strategic critical metals, which are widely used in modern industry, new energy, information technology, aeronautics and astronautics, electronics, atomic energy and defense fields. There are mainly four types of Nb-Ta deposits (Pollard, 1986;Wang et al, 2012;Jiang et al, 2020): (1) carbonatite related Nb-REE deposits, such as the dominant Nb with REE-Fe mineralization (e.g., the Bayan Obo deposit, or Nb with REE mineralization in south Qinling (Xu et al, 2015;Ying et al, 2017Ying et al, , 2022; (2) alkaline rock related Nb-Ta deposits, including intrusive rock and volcanic rock related, the former contains alkaline granite type (e.g., the Baerzhe Zr-Nb-Be-REE deposit, Su et al, 2021, Wu et al, 2021 and the syenite type (e.g., the Saima Nb deposit, Ju et al, 2019;Wu et al, 2019); (3) highlyfractionated granite related, such as the Yichun Nb-Ta-Li deposit (Lin et al, 1995;Belkasmi et al, 2000;Li et al, 2016;Wu et al, 2018;Jiang et al, 2020) and the Limu Ta-Nb-Sn-W deposit (Zhu et al, 2001;Huang et al, 2020); (4) pegmatite related Ta or Nb-Ta deposits, including both LCT and NYF subtypes (Černý, 1991;Kendall-Langley, 2019;Jiang et al, 2020), but in China, most are LCT-type, such as the Keketuohai pegmatite Ta deposit in Xinjiang (Zou and Li, 2006), the Nanping pegmatite Nb-Ta deposit in Fujian (Chen, 2014), and Renli pegmatite Nb-Ta deposit in Hunan (Liu et al, 2018;Xiong et al, 2020). Both the alkaline granite and syenite usually contain enrichment of Zr, Nb, U and REE，while relatively depletion in Ta.…”

Section: Introductionmentioning

confidence: 99%

A New Type of Rare Metal Deposit: The Yushishan Leptynite‐Type Nb‐Ta Deposit in Eastern Altun, Gansu Province, NW China

Jiang

Liu

ZHANG

et al. 2022

Acta Geologica Sinica (Eng)

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The Yusishan deposit is a newly found leptynite‐type niobium and tantalum (Nb‐Ta) deposit, which is located in the Eastern Altun of Gansu Province. The leptynite of the Neoproterozoic Aoyougou Formation occurs more than 10 km long and 3 km wide. In this paper, we carried out a detailed study of the leptynite and related mineralization. The U‐Pb dating of zircon reveals ages of 831 ± 5 Ma and 790 ± 5 Ma for the unmineralized leptynite and 491 ± 4 Ma and 455 ± 4 Ma for the mineralized leptynite. The petrographic and geochemical evidence identified the protolith of the leptynite as alkaline volcanic rocks that erupted during Neoproterozoic at ca. 830 Ma. At ca. 490 Ma, the tectono‐magmatic and metamorphic event triggered remobilization and enrichment of Nb‐Ta as well as other critical metals (REE, Zr, Hf etc) with the formation of industry orebodies in the leptynite strata. The Yushishan deposit presents many similarities with the alkaline volcanic rocks related rare metal deposits in the south Qinling of China and the Brochman, Toogni and Southern Peak Range deposits in Australian. We therefore propose that the Yushishan deposit is a new type (sub‐type) of Nb‐Ta deposit and termed as leptynite type that represents the metamorphic counterpart of the alkaline volcanic rocks related rare metal deposits.

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2024

Mineral Systems, Earth Evolution, and Global Metallogeny

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Textural and compositional evolution of niobium minerals in the Miaoya carbonatite-hosted REE-Nb deposit from the South Qinling Orogen of central China

Cited by 14 publications

References 81 publications

Magmatic and hydrothermal controls on diverse Nb mineralization associated with carbonatite-alkaline complexes in the southern Qinling orogenic belt, Central China

Magmatic and hydrothermal controls on diverse Nb mineralization associated with carbonatite-alkaline complexes in the southern Qinling orogenic belt, Central China

A New Type of Rare Metal Deposit: The Yushishan Leptynite‐Type Nb‐Ta Deposit in Eastern Altun, Gansu Province, NW China

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