LA-ICP-MS dating of high‑uranium columbite from no. 1 pegmatite at Dakalasu, the Chinese Altay orogen: Assessing effect of metamictization on age concordance

Feng, Yonggang; Liang, Ting; Linnen, Robert L.; Zhang, Ze; Zhou, Yi; Zhang, Zhongli; Gao, Jinggang

doi:10.1016/j.lithos.2020.105461

Cited by 12 publications

(36 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our results did not reveal any differences in the behaviour of the U-Pb system in the four minerals of the columbite group, and we were able to use these minerals to date the emplacement of several distinct ore bodies. This is in agreement with observation of other studies dedicated to columbite-group minerals dating (Che et al, 2019;Feng et al, 2020). Moreover, metamictization processes do not seem to affect U-Pb isotopic systematics in CGM (Feng et al, 2020).…”

Section: Implications For Rare-element Melts Generationsupporting

confidence: 93%

“…This is in agreement with observation of other studies dedicated to columbite-group minerals dating (Che et al, 2019;Feng et al, 2020). Moreover, metamictization processes do not seem to affect U-Pb isotopic systematics in CGM (Feng et al, 2020).…”

Section: Implications For Rare-element Melts Generationsupporting

confidence: 93%

“…However, in many cases, this can prove very difficult because of the particular nature of some mineral assemblages. Previous geochronological studies based on U-Pb dating of CGM demonstrated the validity of the method used to date emplacement of pegmatite from the Paleoproterozoic to the Cretaceous (Romer and Wright, 1992;Romer and Smeds, 1994, 1996Romer and Lehmann, 1995;Glodny et al, 1998;Melcher et al, 2008;Melleton et al, 2012;Deng et al, 2013;Che et al, 2015Che et al, , 2019Van Lichtervelde et al, 2017;Zhou et al, 2016;Legros et al, 2019;Feng et al, 2020;Garate-Olave et al, 2020). Moreover, assimilation of common Pb and loss of radiogenic Pb seem to occur more rarely in CGM than in zircon (Melleton et al, 2012).…”

Section: Implications For Rare-element Melts Generationmentioning

confidence: 99%

“…Moreover, Pb diffusion is considered to be very low, making these minerals resistant to isotopic system resetting, together with generally very low amount of common Pb (Romer and Wright, 1992;Melleton et al, 2012;Legros et al, 2019). In this context, CGM are the most suitable magmatic minerals for constraining emplacement ages of rare-element granites and pegmatites and is more and more used (Romer and Wright, 1992;Romer and Smeds, 1994, 1996Melcher et al, 2008;Melleton et al, 2012;Deng et al, 2013;Van Lichtervelde et al, 2017;Yan et al, 2018;Legros et al, 2019;Feng et al, 2020;Garate-Olave et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Polyphased rare-element magmatism during late orogenic evolution: geochronological constraints from NW Variscan Iberia

Melleton

Gloaguen

Frei

et al. 2022

BSGF - Earth Sci. Bull.

View full text Add to dashboard Cite

Rare-element granites and pegmatites represent important sources of raw materials for “clean, green and high technologies”, such as lithium and tantalum, for example. However, mechanisms of rare-element granites and pegmatite’s origin are still far from being fully understood. Several rare-element pegmatite fields and a rare-element granite are known in the Variscan realms located in Iberia (Spain and Portugal), enhancing the interest of this area for studying the formation of these extremely fractionated melts. In situ U-Pb dating by LA-SF-ICP-MS of columbite-group minerals from rare-element granites and pegmatites of the Iberian Variscan belt provides new constraints on the generation of rare-element melts. Three events have been recognized: (i) Emplacement of the Argemela rare-element granite, in the Central Iberian Zone (CIZ), with an age of 326 ± 3 Ma; (ii) Emplacement of rare-element pegmatites from the Galicia-Trás-os-Montes Zone (GTOMZ), at an average age of 310 ± 5 Ma; (iii) Emplacement of rare-element pegmatites in the CIZ and in the southern GTOMZ at about 301 ± 3 Ma. These two last events are coeval with the two peaks of ages for the late orogenic magmatism at ca. 308 Ma and 299 Ma, and all dated rare-element pegmatites clearly emplaced during the late-orogenic evolution of the Variscan belt. Contemporaneous fields of rare-element pegmatites are arranged in belts following those formed by similar granitoid suites. Pegmatite fields from both the GTOMZ and the CIZ reveal a southward propagation of ages of emplacement, which matches the observed propagation of deformation, metamorphism and magmatism in the two different geotectonic zones. Existence of three successive rare-element events in the Iberian Massif argues against the involvement of lower crustal HP-HT metamorphism in the generation of rare-element melts. Possible sources of rare-element-enriched melts are more likely located in the middle to upper crust, as are the major components of granitic magmatism. Analyses of U and Pb isotopes from columbite-group minerals are very robust and reproducible, making them good candidates for dating ore deposits related to peraluminous magmatism as well as REE- and Nb-bearing deposits.

show abstract

Section: Implications For Rare-element Melts Generationsupporting

confidence: 93%

Section: Implications For Rare-element Melts Generationsupporting

confidence: 93%

Section: Implications For Rare-element Melts Generationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Polyphased rare-element magmatism during late orogenic evolution: geochronological constraints from NW Variscan Iberia

Melleton

Gloaguen

Frei

et al. 2022

BSGF - Earth Sci. Bull.

View full text Add to dashboard Cite

show abstract

“…Furthermore, we discussed the correlation between the degrees of metamictization and the key Raman spectral parameters of columbite samples. According to the LA-ICP-MS data and electron probe data obtained in this study and previous studies [3,4] , the alpha decay dose (D) of columbite in Kalu'an 802 pegmatite (corrected based on a mean life of 200 Ma for the alpha-recoil tracks) is 0.169×10 15 α-events×mg -1 , which indicates that the columbite is well crystalline; the alpha decay doses (D) of the columbites from Jingerquan No. 1 pegmatite, Kalu'an 803 pegmatite, DKLS 107 and DKLS 108 are 0.638×10 15 , 0.268×10 15 , 3.119×10 15 and 2.748×10 15 α-events×mg -1 respectively, indicating all the columbites are in a transitional stage from being crystalline to metamict state.…”

supporting

confidence: 64%

Quantitative evaluation on metamictization of columbite-group minerals from pegmatites based on Raman spectroscopy.

Hao¹,

Feng²,

Liang³

et al. 2022

Goldschmidt2022 Abstracts

View full text Add to dashboard Cite

Mineralogy of columbite-group minerals from the rare-element pegmatite dykes in the East-Qinling orogen, central China: Implications for formation times and ore genesis

Zhou

Qin

Tang

2021

Journal of Asian Earth Sciences

View full text Add to dashboard Cite

LA-ICP-MS dating of high‑uranium columbite from no. 1 pegmatite at Dakalasu, the Chinese Altay orogen: Assessing effect of metamictization on age concordance

Cited by 12 publications

References 48 publications

Polyphased rare-element magmatism during late orogenic evolution: geochronological constraints from NW Variscan Iberia

Polyphased rare-element magmatism during late orogenic evolution: geochronological constraints from NW Variscan Iberia

Quantitative evaluation on metamictization of columbite-group minerals from pegmatites based on Raman spectroscopy.

Mineralogy of columbite-group minerals from the rare-element pegmatite dykes in the East-Qinling orogen, central China: Implications for formation times and ore genesis

Contact Info

Product

Resources

About