Julio C. Chávez-Ambriz, Juan Pablo Bernal, Bodo Weber, Carlos Ortega-Obregón, Liliana Corona-Martínez, Óscar Carranza-Castañeda
{"title":"Accuracy Improvement in the LA-MC-ICP-MS Measurement of 87Sr/86Sr in Bioapatite Using Dentin of Carcharinus leucas (Bull shark) to Estimate 87Rb/85Rb Instrument Induced Fractionation","authors":"Julio C. Chávez-Ambriz, Juan Pablo Bernal, Bodo Weber, Carlos Ortega-Obregón, Liliana Corona-Martínez, Óscar Carranza-Castañeda","doi":"10.1111/ggr.12576","DOIUrl":"10.1111/ggr.12576","url":null,"abstract":"<p><i>In situ</i> <sup>87</sup>Sr/<sup>86</sup>Sr microanalysis in bioapatite using laser ablation (LA-)MC-ICP-MS is an essential tool for provenance studies, as enamel tissue build-up records the regional Sr isotopic composition of ingested food and water sources. Several factors hamper the acquisition of reliable and precise <sup>87</sup>Sr/<sup>86</sup>Sr data: isobaric interferences, elemental and isotopic fractionation of Rb and Sr, and the lack of certified reference materials. Here we thoroughly characterise several teeth from <i>Carcharinus leucas</i> (Bull shark) for the spatial distribution of Sr and Rb mass fraction by LA-ICP-Q-MS, and their <sup>87</sup>Sr/<sup>86</sup>Sr ratio by solution MC-ICP-MS, MC-TIMS and LA-MC-ICP-MS, and which were used subsequently as a reference material during laser ablation measurement of Sr isotope ratios in bioapatite. We establish a protocol to estimate the <sup>85</sup>Rb/<sup>87</sup>Rb mass bias from the analysis of shark teeth that demonstrates that the common assumption of equal Sr and Rb instrument induced fractionation can lead to a systematic bias in <sup>87</sup>Sr/<sup>86</sup>Sr isotope ratios. Using the shark teeth as an \"external\" reference material to measure β<sub>Rb</sub> yielded <sup>87</sup>Sr/<sup>86</sup>Sr compositions in unknown samples that are within approximately -42 ppm to +66 ppm of expected values, instead of approximately -50 ppm to +190 ppm if assuming β<sub>Rb</sub> = β<sub>Sr</sub>. Finally, this methodology was tested on fossil gomphotherid (<i>Rhynchotherium sp.)</i> enamel, allowing us to make preliminary inferences about its palaeobiogeography.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 3","pages":"595-612"},"PeriodicalIF":2.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.12576","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141803460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yves Moussallam, William Henry Towbin, Terry Plank, Hélène Bureau, Hicham Khodja, Yunbin Guan, Chi Ma, Michael B. Baker, Edward M. Stolper, Fabian U. Naab, Brian D. Monteleone, Glenn A. Gaetani, Kenji Shimizu, Takayuki Ushikubo, Hyun Joo Lee, Shuo Ding, Sarah Shi, Estelle F. Rose-Koga
{"title":"ND70 Series Basaltic Glass Reference Materials for Volatile Element (H2O, CO2, S, Cl, F) Measurement and the C Ionisation Efficiency Suppression Effect of Water in Silicate Glasses in SIMS","authors":"Yves Moussallam, William Henry Towbin, Terry Plank, Hélène Bureau, Hicham Khodja, Yunbin Guan, Chi Ma, Michael B. Baker, Edward M. Stolper, Fabian U. Naab, Brian D. Monteleone, Glenn A. Gaetani, Kenji Shimizu, Takayuki Ushikubo, Hyun Joo Lee, Shuo Ding, Sarah Shi, Estelle F. Rose-Koga","doi":"10.1111/ggr.12572","DOIUrl":"10.1111/ggr.12572","url":null,"abstract":"<p>We present a new set of reference materials, the ND70-series, for <i>in situ</i> measurement of volatile elements (H<sub>2</sub>O, CO<sub>2</sub>, S, Cl, F) in silicate glass of basaltic composition. The materials were synthesised in piston cylinders at pressures of 1 to 1.5 GPa under volatile-undersaturated conditions. They span mass fractions from 0 to 6% <i>m/m</i> H<sub>2</sub>O, from 0 to 1.6% <i>m/m</i> CO<sub>2</sub> and from 0 to 1% <i>m/m</i> S, Cl and F. The materials were characterised by elastic recoil detection analysis for H<sub>2</sub>O, by nuclear reaction analysis for CO<sub>2</sub>, by elemental analyser for CO<sub>2</sub>, by Fourier transform infrared spectroscopy for H<sub>2</sub>O and CO<sub>2</sub>, by secondary ion mass spectrometry for H<sub>2</sub>O, CO<sub>2</sub>, S, Cl and F, and by electron probe microanalysis for CO<sub>2</sub>, S, Cl and major elements. Comparison between expected and measured volatile amounts across techniques and institutions is excellent. It was found however that SIMS measurements of CO<sub>2</sub> mass fractions using either Cs<sup>+</sup> or O<sup>−</sup> primary beams are strongly affected by the glass H<sub>2</sub>O content. Reference materials have been made available to users at ion probe facilities in the US, Europe and Japan. Remaining reference materials are preserved at the Smithsonian National Museum of Natural History where they are freely available on loan to any researcher.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 3","pages":"637-660"},"PeriodicalIF":2.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.12572","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141804109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ségolène Rabin, Francois-Xavier d'Abzac, Jerome Chmeleff, Franck Poitrasson, Michel Grégoire
{"title":"High-Resolution In Situ Fe Isotope Measurements of Silicate Minerals and Glasses by Femtosecond Laser Ablation MC-ICP-MS","authors":"Ségolène Rabin, Francois-Xavier d'Abzac, Jerome Chmeleff, Franck Poitrasson, Michel Grégoire","doi":"10.1111/ggr.12577","DOIUrl":"10.1111/ggr.12577","url":null,"abstract":"<p>In this study, we present a high precision and high spatial resolution <i>in situ</i> Fe isotope protocol using femtosecond (fs) laser ablation multi-collector inductively coupled plasma-mass spectrometry (LA-MC-ICP-MS). The intermediate measurement precision obtained over a period of <i>ca</i>. 3 years for the USGS glass BIR-1G against the Puratronic reference material is 0.17‰ (2<i>s</i>) for δ<sup>56</sup>Fe. Uncertainties achieved on individual analyses of glass and olivines were < 0.15‰ for δ<sup>56</sup>Fe. This high precision is associated with high spatial resolution of about 170 × 25 μm. Our results display good consistency between LA-MC-ICP-MS and solution nebulisation MC-ICP-MS data from the literature. Obtained δ<sup>56</sup>Fe values on different USGS glasses (BIR-1G, BHVO-2G and BCR-2G) show that these reference materials have homogenous Fe isotope ratio and therefore can be used as bracketing calibrators during laser ablation measurement sessions. On the other hand, the San Carlos Olivine displays high Fe isotope heterogeneity, and therefore cannot be considered as a good bracketing standard (calibrator). We also applied our fs-LA-MC-ICP-MS protocol to olivines and pyroxene from the Kerguelen Archipelago. This technique appears to be a relevant tool to resolve isotopic zoning in chemically zoned silicate phenocrysts, even of small size (< 1 mm). We demonstrate that within single lavas, olivine crystals display various zoning depending on their size, related to their residence time in the magma. Both equilibrium and diffusive processes were observed in olivine crystals from Kerguelen, uncovering complex histories. Hence, iron isotope ratio measurements by fs-LA-MC-ICP-MS open new possibilities for studying highly zoned silicate minerals in magmatic rocks to better understand their formation.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 3","pages":"619-635"},"PeriodicalIF":2.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141802870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SIMS Data Correction Procedure for Quasi-Simultaneous Arrival (QSA) Under-counting and Ramifications of Misapplication","authors":"Clive Jones, David A. Fike","doi":"10.1111/ggr.12570","DOIUrl":"10.1111/ggr.12570","url":null,"abstract":"<p>Isotope geochemistry requires isotope ratios measured using secondary ion mass spectrometry (SIMS) to be made with optimal precision and accuracy. Under some analytical conditions when using electron multiplier detectors, secondary ions may be under-counted because of quasi-simultaneous arrival (QSA) at the first dynode. The relative magnitude of the associated QSA correction to raw measured isotopic ratios can be up to seventy permil or more. Therefore, not applying the correction, or misapplication of it could lead to significant inaccuracies in published isotope ratio data. Examples and ramifications of the latter are described in addition to a straightforward procedure for QSA under-counting correction.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 3","pages":"613-618"},"PeriodicalIF":2.7,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141818734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Determination of Rare Earth Elements, Zirconium, Hafnium, Thorium and Uranium in Ultramafic Rocks by ICP-MS after RE-UTEVA Resin Columns for Separation and Pre-Concentration","authors":"Qiuyun Guan, Xudong Guo, Yali Sun, Xiaoming Liu, Shouqian Zhao","doi":"10.1111/ggr.12573","DOIUrl":"10.1111/ggr.12573","url":null,"abstract":"<p>A simple method was developed for the determination of REEs, Zr, Hf, Th and U in ultramafic rocks by inductively coupled plasma-mass spectrometry with a combination of RE and UTEVA extraction resins for their separation and pre-concentration. Ultramafic rocks were digested with HNO<sub>3</sub>-HF-HClO<sub>4</sub> and finally turned into 11 mol l<sup>−1</sup> HCl solutions together with H<sub>3</sub>BO<sub>3</sub> to remove insoluble fluorides. The removal of matrix elements was achieved during the loading procedure. Following this, REEs on RE resin, and Zr, Hf, Th and U on UTEVA resin were eluted with 10 ml of 0.24 mol l<sup>−1</sup> HCl, with recoveries better than 94.4%. This method was validated using reference materials JP-1, DTS-2B, OKUM, UB-N, MUH-1 and DZΣ-2, and the measurement results for target analytes were comparable to literature values, indicating its applicability to the determination of REEs, Zr, Hf, Th and U at ultra-trace level in ultramafic rocks.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 3","pages":"661-676"},"PeriodicalIF":2.7,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141818579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study of New CGSP-P Series Phosphate Matrix Reference Materials for LA-ICP-MS","authors":"Dongyang Sun, Chenzi Fan, Wei Guo, Linghao Zhao, Xiuchun Zhan, Mingyue Hu","doi":"10.1111/ggr.12557","DOIUrl":"10.1111/ggr.12557","url":null,"abstract":"<p>A series of three CGSP-P phosphate matrix reference materials, with variable element mass fractions, were synthesised by co-precipitation with CaCl<sub>2</sub> and (NH<sub>4</sub>)<sub>3</sub>PO<sub>4</sub> to form a hydroxylapatite matrix. Each powder sample was packaged into multiple bottles and pressed into tablets as replicates. The within-bottle homogeneity was evaluated by the repeatability of element mass fractions of six spots in per tablet of CGSP-Ps by LA-ICP-MS. For the between-bottle homogeneity evaluation, one approach adopted the % RSD of element mass fractions in twelve different tablets from twelve bottles in the same reference material in comparison with the repeatability field of LA-ICP-MS analyses obtained from homogeneous glasses, and the other used a one-way analysis of variance (ANOVA) approach. Most of the elements (e.g., Mg, Ca, P, Mn and REE) were homogenous within 10% RSD, and other elements (e.g., Si, Al, K, Rb, Cs and Ni) were considered heterogeneous (with > 20% RSD). All of the elements passed the <i>t</i>-test except Ni in CGSP-P3, and V, Cr, Ni, Zr, Gd, Dy and Th in CGSP-P4 after a 29-month period stability examination by LA-ICP-MS. The preliminary reference values and standard uncertainties for CGSP-Ps are given with a network of methods and eight laboratories by bulk analysis according to ISO Guide 35:2006 and JJF 1343-2012.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 3","pages":"677-695"},"PeriodicalIF":2.7,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141105195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Step Forward in Quantitative Automated Mineralogy in 2D and 3D","authors":"Richard J.M. Taylor, Eddy Hill, Matthew Andrew","doi":"10.1111/ggr.12552","DOIUrl":"10.1111/ggr.12552","url":null,"abstract":"<p>Automated mineralogy is a software addition usually seen on scanning electron microscopes designed to provide rapid insight into sample chemistry and texture in routine petrology workflows. The specific purpose of automated mineralogy is to provide mineral classifications to uniquely identified phases typically using energy dispersive spectroscopy, thus removing laborious and time-consuming human input for routine tasks. These mineral classifications can then be applied to image data to quantify which mineral is associated with any particular texture. Automated mineralogy systems were primarily designed to generate quantitative textural analysis of particle samples to the mining industry and have remained a critical technique in this setting for the last several decades. Automated mineralogy has become more widely used in academia, and this has changed the focus of the technique, applying it to a broader range of workflows and applications. Here we show petrology examples focussing where combined geochemical and textural analysis are widely used. Critically, the use of quantitative geochemical data means that mineral classifications are based on their quantitatively measured chemistry. By making both the chemical and textural analysis quantitative, automated mineralogy can become highly flexible and provide a unique system for petrologists in both industry and academia.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 3","pages":"579-593"},"PeriodicalIF":2.7,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.12552","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140968476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Philip J. Potts, Peter C. Webb, Charles J.B. Gowing, Axel D. Renno
{"title":"Certification of Meissen Granite IAG GMN-1 Using the GeoPT Proficiency Testing Certification Protocol","authors":"Philip J. Potts, Peter C. Webb, Charles J.B. Gowing, Axel D. Renno","doi":"10.1111/ggr.12553","DOIUrl":"10.1111/ggr.12553","url":null,"abstract":"<p>Following a full assessment of the Geo<i>PT</i> proficiency testing scheme against the recommendations in ISO Guide 35:2017 for the use of proficiency testing in the certification of reference materials, this paper presents the first application of the Geo<i>PT</i> certification protocol in the characterisation of a new geochemical CRM, IAG GMN-1, Meissen Granite. This protocol is applied to the measurement results reported in Round 51 of the Geo<i>PT</i> programme in which the candidate CRM was used as the test material, together with an established CRM (CGL 008 MGT-1 Granite) to provide validation of the results. Following the presentation of mineralogy, grain-size analysis and homogeneity testing data for IAG GMN-1, certified values for nine major elements and thirty-nine trace elements are reported.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 3","pages":"697-706"},"PeriodicalIF":2.7,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniel A. Coulthard Jr, Yoshiyuki Iizuka, Georg F. Zellmer, Raimundo Brahm
{"title":"Corrigendum to “Statistical Perspective on the Petrological Utility of Polyphase Groundmass Compositions Inferred via Defocused Beam Electron Probe Microanalysis” [Geostandards and Geoanalytical Research (2024)]","authors":"Daniel A. Coulthard Jr, Yoshiyuki Iizuka, Georg F. Zellmer, Raimundo Brahm","doi":"10.1111/ggr.12554","DOIUrl":"10.1111/ggr.12554","url":null,"abstract":"<p>Due to the incorrect speciation of iron during thermometry modelling, Coulthard <i>et al</i>. (2024) produced an incorrect olivine-liquid equilibrium diagram, which failed to identify multiple potential equilibrium olivine-melt pairs. With the new pairs identified here, the temperatures inferred from olivine-groundmass pairs move closer in temperature space to those inferred from olivine-glass pairs. Additionally, it is recognised that the most significant difference between these thermometry data is due to differences in inferred melt water mass fraction. If a mean value of water is used for all thermometry, the mean temperatures calculated for olivine-glass and olivine-groundmass pairs converge to within 10 °C of one another. This indicates that groundmass compositions inferred via the defocused beam analysis of a polyphase groundmass may reproduce enough information to confidently perform olivine-melt thermometry despite the glass and groundmass data representing significantly different compositions in multivariate space.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"48 2","pages":"359-362"},"PeriodicalIF":3.8,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141016290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}