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Title: | Assessing the U-Pb, Sm-Nd and Sr-Sr isotopic compositions of the sume apatite as a reference material for LA-ICP-MS analysis. |
Authors: | Lana, Cristiano de Carvalho Gonçalves, Guilherme de Oliveira Mazoz, Ariela Oliveira Buick, Ian S. Kamo, Sandra L. Cipriano, Ricardo Augusto Scholz Wang, Hao Moreira, Hugo Souza Babinski, Marly Queiroga, Gláucia Nascimento |
Keywords: | Geochronology Laser ablation Inductively coupled plasma mass spectrometry |
Issue Date: | 2022 |
Citation: | LANA, C. de C. et al. Assessing the U-Pb, Sm-Nd and Sr-Sr isotopic compositions of the sume apatite as a reference material for LA-ICP-MS analysis. Geostandards and Geoanalytical Research, v. 46, n. 1, p. 71-95, 2022. Disponível em: <https://onlinelibrary.wiley.com/doi/full/10.1111/ggr.12413>. Acesso em: 29 abr. 2022. |
Abstract: | This study has determined the trace element and the U-Pb, Sm-Nd and Sr-Sr isotope composition of the Sume apatite (from NE Brazil) to assess its suitability as a primary/secondary reference material for LA-ICP-MS. Reproducibility tests demonstrate that one batch (~ 100 g) of the Sume apatite (Sum e-570) is uniform in terms of Nd-Nd and U-Pb isotope compositions. Bulk isotope dilution TIMS/ICP-MS and LA-MC-ICP-MS analyses confirm that the apatite is well suited for use as quality control material for Nd isotopes and U-Pb geochronology. U-Pb ID-TIMS analyses yield weighted mean ratios of 0.09211 0.00053 (2s; 206Pb*/238U) and 0.06120 0.00063 (2s; 207Pb*/206Pb*) and a weighted mean 206Pb*/238U date of 568 3 Ma (95% c.l.). U-Pb LA-(SF/MC)-ICP-MS runs using Sume-570 as a primary RM and reproduces the dates of other established RMs within 1% deviation (except for Durango 2–4%). Major and trace element abundances show that Sume-570 is a fluorapatite derived from a syenitic source. It also strongly shows LREE-enriched chondrite-normalised REE patterns with significant negative Eu anomalies, due to crystallisation of plagioclase in the residue. |
URI: | http://www.repositorio.ufop.br/jspui/handle/123456789/15258 |
metadata.dc.identifier.uri2: | https://onlinelibrary.wiley.com/doi/full/10.1111/ggr.12413 |
metadata.dc.identifier.doi: | https://doi.org/10.1111/ggr.12413 |
ISSN: | 1751-908X |
Appears in Collections: | DEGEO - Artigos publicados em periódicos |
Files in This Item:
File | Description | Size | Format | |
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ARTIGO_AssessingU-PbSm.pdf Restricted Access | 2,83 MB | Adobe PDF | View/Open |
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