Geostandards and Geoanalytical Research最新文献

{"title":"Two New Potential Apatite Reference Materials for In Situ Sr-Nd Isotope Measurement","authors":"Li-Jun Duan,&nbsp;Liang-Liang Zhang,&nbsp;Di-Cheng Zhu,&nbsp;Jin-Cheng Xie,&nbsp;Qing Wang,&nbsp;Wen-Tan Xu,&nbsp;Li-Juan Xu,&nbsp;Margaret L. Odlum,&nbsp;Chen-Xu Pan,&nbsp;Guang-Hai Shi","doi":"10.1111/ggr.70013","DOIUrl":"https://doi.org/10.1111/ggr.70013","url":null,"abstract":"<p>Apatite supergroup minerals are common in diverse lithologies and rich in strontium and neodymium making them optimal minerals for <i>in situ</i> Sr-Nd isotopic tracing in geological studies. We present detailed spectroscopy, major and trace element compositional determinations, and Sr-Nd isotopic measurement results for two natural apatite samples (MAP-1 and MAP-4) to assess their chemical homogeneity and suitability as Sr and Sm-Nd reference materials (RMs). The results reveal that both samples display remarkably uniform trace element distributions, and nearly consistent major element chemistry and Sr-Nd isotope ratios. They are particularly characterised by high Sr mass fractions (&gt; 8000 μg g^-1) and relatively high Nd mass fractions (~ 3000 μg g^-1). For MAP-1, the ⁸⁷Sr/⁸⁶Sr and ¹⁴³Nd/¹⁴⁴Nd values determined by (ID-)TIMS are 0.704340 ± 0.000029 (2<i>s</i>, <i>n</i> = 3) and 0.511978 ± 0.000008 (2<i>s</i>, <i>n</i> = 3). MAP-4 yielded ⁸⁷Sr/⁸⁶Sr of 0.704354 ± 0.000010 (2<i>s</i>, <i>n</i> = 4) and ¹⁴³Nd/¹⁴⁴Nd of 0.511956 ± 0.000005 (2<i>s</i>, <i>n</i> = 7). Reproducibility tests using LA-MC-ICP-MS were consistent or nearly consistent with the results of (ID-)TIMS measurements, demonstrating that both fluorapatites are suitable new RMs for <i>in situ</i> ⁸⁷Sr/⁸⁶Sr and ¹⁴³Nd/¹⁴⁴Nd isotopic measurements, providing new benchmarks of apatite RMs for laser-based Sr-Nd isotopic measurements.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 4","pages":"885-900"},"PeriodicalIF":3.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145480121","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":"IAG Membership Information","authors":"","doi":"10.1111/ggr.70012","DOIUrl":"https://doi.org/10.1111/ggr.70012","url":null,"abstract":"","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 3","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894454","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}

{"title":"A Simple Procedure for Separating Tungsten from Silicate Rocks Prior to Tungsten Isotope Ratio Determination by MC-ICP-MS","authors":"Ai-qun Xiao,&nbsp;Pei-pei Zhao,&nbsp;Lu Yin,&nbsp;Bei Xu","doi":"10.1111/ggr.70009","DOIUrl":"https://doi.org/10.1111/ggr.70009","url":null,"abstract":"<p>A single-column extraction chromatographic purification method for tungsten using the N-benzoyl-N-phenylhydroxylamine (BPHA) resin was investigated in this study. This method greatly simplifies the W purification procedure, and only 10 ml of acid (5 ml 3 mol l^-1 HCl-0.1 mol l^-1 HF and 5 ml 1 mol l^-1 HF) is required to separate W from Ti, Zr, Hf, Ta and other matrix elements. The blank in the separation step was less than 0.1 ng, and the recovery of W was ~ 99%. Six independent digestion measurements of reference materials BHVO-2, BCR-2, RGM-2 and JB-2 yielded μ¹⁸²W values (mean value with intermediate precision, 95% confidence level) of -10.3 ± 4.0 (<i>n</i> = 6, 2<i>s</i>)，-1.2 ± 5.3 (<i>n</i> = 6, 2<i>s</i>)，-1.4 ± 4.4 (<i>n</i> = 6, 2<i>s</i>) and 0.6 ± 3.8 (<i>n</i> = 6, 2<i>s</i>), respectively, which are in good agreement with the previously reported values.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 4","pages":"727-735"},"PeriodicalIF":3.4,"publicationDate":"2025-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145480056","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":"Kuppusami Govindaraju (1928–2025) – Founding editor of Geostandards Newsletter","authors":"Edward A. Williams,&nbsp;Philip J. Potts","doi":"10.1111/ggr.70011","DOIUrl":"https://doi.org/10.1111/ggr.70011","url":null,"abstract":"","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 3","pages":"445-453"},"PeriodicalIF":3.4,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894182","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":"Potential Natural Scapolite Reference Materials for In Situ Cl and Br Measurement by LA-ICP-MS","authors":"Zheng-Jie Qiu,&nbsp;Qin-Di Wei,&nbsp;Liang-Liang Huang,&nbsp;Di Zhang,&nbsp;Yin-Zhi Wang,&nbsp;Jia-Long Hao,&nbsp;Hong-Rui Fan","doi":"10.1111/ggr.70010","DOIUrl":"https://doi.org/10.1111/ggr.70010","url":null,"abstract":"<p>The mass fractions of Cl and Br in melt, fluid and mineral phases are crucial for tracing geological processes, exploring ore deposits and assessing environmental impacts of volcanic halogen degassing. However, the scarcity of well-characterised reference materials for <i>in situ</i> Cl and Br measurement remains a significant challenge. Here, a suite of gem-quality scapolite samples from world-wide was characterised by laser ablation ICP-MS, electron probe microanalysis (EPMA) and instrumental neutron activation analysis (INAA). The results revealed reproducible mass fractions in scapolite samples TSNY (3.63 ± 0.13% <i>m/m</i> Cl; 319 ± 12 μg g^-1 Br), MDJ (3.01 ± 0.20% <i>m/m</i> Cl; 225 ± 16 μg g^-1 Br), and BX (2.76 ± 0.07% <i>m/m</i> Cl; 251 ± 15 μg g^-1 Br), which were identified as optimal calibration materials across a broad range of Br mass fractions. Additionally, samples SM (2.76 ± 0.13% <i>m/m</i> Cl; 1186 ± 146 μg g^-1 Br), AFH (3.92 ± 0.14% <i>m/m</i> Cl; 44 ± 3 μg g^-1 Br), and XJ (3.82 ± 0.10% <i>m/m</i> Cl; 42 ± 3 μg g^-1 Br) served as effective secondary reference materials for quality monitoring purposes. Ablations were conducted with a 90 μm spot size, 5 Hz repetition rate and 100 ms dwell time, with ³⁵Cl and ⁸¹Br identified as the preferred isotopes for accurate Cl-Br quantification. The scapolite samples demonstrated excellent calibration performance, with 2 RSD and bias values between 6 to 7% and 0.8 to 1.6%. This work provides a reliable set of reference materials for Cl-Br measurement, enhancing the precision and accuracy of LA-ICP-MS in geological research.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 4","pages":"871-883"},"PeriodicalIF":3.4,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145480154","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":"GGR Handbook of Rock and Mineral Analysis Chapter 16 Nano-Imaging for Advanced X-Ray Fluorescence and Absorption Spectroscopy Applications","authors":"Alexandre S. Simionovici,&nbsp;Laurence Lemelle","doi":"10.1111/ggr.70007","DOIUrl":"https://doi.org/10.1111/ggr.70007","url":null,"abstract":"<p>This chapter (Nano-Imaging for Advanced X-ray Fluorescence and Absorption Spectroscopy Applications) is a contribution to the <i>Geostandards and Geoanalytical Research Handbook of Rock and Mineral Analysis</i> – an online textbook that is a fully revised and updated edition of <i>A Handbook of Silicate Rock Analysis</i> (P. J. Potts, 1987, Blackie, Glasgow).</p><p>Chapter 16 (from Section 3 of the handbook devoted to microbeam techniques) has been designed to provide a coherent progression, starting with a brief introduction of the essential fundamentals and the practical information needed to understand the experimental specifics of nano-XRF imaging. This concise yet crucial information is followed by a comprehensive presentation of current applications of nano-XRF imaging, with examples showcasing elemental measurement and XAS applications based on nano-XRF imaging. To conclude, the final section offers a brief overview of emerging perspectives that should be of particular interest to young researchers at the beginning of their careers.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 3","pages":"495-533"},"PeriodicalIF":3.4,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894184","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}

{"title":"Lithium and Boron Isotope Ratios of Seven Glass Reference Materials (OJY-1, OH-1, OA-1, CGSG-1, CGSG-2, CGSG-4 and CGSG-5): New Reference Materials for In Situ δ7Li and δ11B Microanalysis","authors":"Jianhui Li,&nbsp;Shitou Wu,&nbsp;Ming Yang,&nbsp;Rolf L. Romer,&nbsp;Yueheng Yang,&nbsp;Dongyong Li,&nbsp;Jinlong Ma,&nbsp;Le Zhang,&nbsp;Jie Lin,&nbsp;Jan C.M. De Hoog,&nbsp;Ivan P. Savov,&nbsp;Samuele Agostini,&nbsp;Enrico Cannao,&nbsp;Xiuchun Zhan,&nbsp;Junlong Niu,&nbsp;Jingyuan Chen,&nbsp;Lei Xu,&nbsp;Chao Huang,&nbsp;Hao Wang,&nbsp;Liewen Xie","doi":"10.1111/ggr.70008","DOIUrl":"https://doi.org/10.1111/ggr.70008","url":null,"abstract":"<p>The geochemistry of lithium and boron isotopes is widely applied to a variety of Earth science disciplines. <i>In situ</i> measurement of Li and B isotope ratios requires matrix-matched reference materials for calibration, method validation and inter-laboratory data comparison. In this study, we characterise the Li and B isotope ratios (δ⁷Li and δ¹¹B) of the seven glass reference materials OJY-1, OH-1, OA-1, CGSG-1, CGSG-2, CGSG-4 and CGSG-5. These seven materials exhibit relative homogeneous δ⁷Li and δ¹¹B values at the spatial resolution of 10–120 μm, as revealed by multiple spot analyses using LA-MC-ICP-MS (<i>n</i> = 80–100) and SIMS (<i>n</i> = 8–12) on different grains. The 2<i>s</i> of δ⁷Li and δ¹¹B in these materials as determined by LA-MC-ICP-MS and SIMS ranges from ~ 0.40 to ~ 1.50‰. The recommended δ⁷Li and δ¹¹B values were determined using solution MC-ICP-MS techniques, and data from independent laboratories showed high precision with discrepancies within ~ 1.50‰. The Li and B mass fractions of the various glasses differ, ranging from ~ 40 μg g^-1 to 2000 μg g^-1 and ~ 40 μg g^-1 to 5000 μg g^-1, respectively. The various glasses also have different δ⁷Li and δ¹¹B values, ranging from +0.99 to +5.69‰ and -10.92 to +0.25‰, respectively. Notably, OA-1 and OH-1 are high-silica glasses (SiO₂ &gt; 75% <i>m/m</i>) and, therefore, may be particularly helpful for Li and B isotope analysis of highly evolved magmatic rocks. These investigated glasses have great potential as reference materials for the <i>in situ</i> measurement of Li and B isotope ratios.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 4","pages":"821-838"},"PeriodicalIF":3.4,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145479898","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":"GGR Handbook of Rock and Mineral Analysis Chapter 12 Laser Ablation-ICP-MS for the In Situ Analysis of Geological Samples","authors":"Leonid V. Danyushevsky,&nbsp;Jay M. Thompson","doi":"10.1111/ggr.70004","DOIUrl":"https://doi.org/10.1111/ggr.70004","url":null,"abstract":"<p>This chapter (Laser Ablation-ICP-MS for the <i>In Situ</i> Analysis of Geological Samples) is a contribution to the <i>Geostandards and Geoanalytical Research Handbook of Rock and Mineral Analysis</i> – an online textbook that is a fully revised and updated edition of <i>A Handbook of Silicate Rock Analysis</i> (P. J. Potts, 1987, Blackie, Glasgow).</p><p>This Chapter (from Section 3 of the handbook dealing with microbeam analytical techniques) presents an overview of fundamental aspects of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and its application relevant to multi-element measurement and U-Pb dating of geological samples. The chapter describes instrumentation currently used for LA-ICP-MS, physical processes that occur at the ablation site, during aerosol transport and in the ICP, and approaches to quantification of LA-ICP-MS data. Description of laser ablation microprobes focuses on their design aspects that affect analytical performance such as the source of laser light, configuration of the optical path of the laser beam, and the design of the sample cell. Description of ICP-MS instruments focuses on the implications of using single collector mass spectrometers, which are currently the most common type of ICP-MS instruments used for LA-ICP-MS. Description of the tubing connecting laser microprobes to ICP-MS instruments focuses on the impact of its configuration on the uncertainty of LA-ICP-MS measurement results. The description of physical processes includes aspects of the ablation process, digestion of laser ablation aerosol in a dry ICP, and down-hole fractionation during ablation at a fixed location on the sample. Description of approaches to quantification of LA-ICP-MS data covers internal standardisation, calibration of ICP-MS instrument response during analytical runs, matrix effects, use of secondary reference material, interferences and memory effects.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 3","pages":"457-493"},"PeriodicalIF":3.4,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894483","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 Sm, Nd Mass Fractions and 143Nd/144Nd Ratios in Mafic-Ultramafic Rock Reference Materials by MC-ICP-MS","authors":"Qindi Wei,&nbsp;Yueheng Yang,&nbsp;Zhuyin Chu,&nbsp;Shitou Wu,&nbsp;Hao Wang,&nbsp;Chao Huang,&nbsp;Lei Xu,&nbsp;Liewen Xie,&nbsp;Jinhui Yang,&nbsp;Fuyuan Wu","doi":"10.1111/ggr.70006","DOIUrl":"https://doi.org/10.1111/ggr.70006","url":null,"abstract":"<p>In this work, we describe a measurement procedure that provides high precision measurement results of samarium (Sm) and neodymium (Nd) mass fractions, as well as ¹⁴³Nd/¹⁴⁴Nd ratios in mafic–ultramafic rock reference materials, using isotope dilution (ID) multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS). This technique is superior in terms of intermediate measurement precision, simplicity and rapidity compared with thermal ionisation mass spectrometry (TIMS) based on high-sensitivity NdO⁺ techniques. Samples were spiked with a ¹⁴⁹Sm-¹⁵⁰Nd enriched tracer and then digested using a commonly used protocol involving HF, HNO₃ and HClO₄. The sample solution was directly purified using a single DGA resin column to obtain Sm and Nd fractions with high purity and recovery. The samples including five serpentinised dunites (DZE-1, DZE-2, NIM-D, JP-1, DTS-2b), a harzburgite (HARZ01), a serpentinised harzburgite (MUH-1; certified reference material according to ISO Guides for major and trace elements), two serpentinised lherzolites (WPR-1a, UB-N), a komatiite (OKUM; certified reference material according to ISO Guides), a pyroxenite (NIM-P) and a norite (NIM-N), which encompass various rock types with very low Sm and Nd mass fractions (from ng g^-1 to sub-ng g^-1 levels), were analysed. The measurement results of these reference materials (RMs), demonstrate that the measured ¹⁴⁷Sm/¹⁴⁴Nd and ¹⁴³Nd/¹⁴⁴Nd ratios are in good agreement with previously published values obtained by the TIMS and MC-ICP-MS techniques. Notably for OKUM, HARZ01, DZE-1, DZE-2 and NIM-D, this study provides the first reported data on ¹⁴³Nd/¹⁴⁴Nd ratios. This protocol has great potential for Sm–Nd analysis of ultra-low Nd abundance samples in geochemistry, cosmochemistry and environmental sciences (e.g., peridotite, garnet, meteorites, dust, etc.). Therefore, the high sample throughput inherent to MC-ICP-MS can be fully exploited in these research fields.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 4","pages":"839-855"},"PeriodicalIF":3.4,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145480075","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":"The Effect of Crystal Orientation on In Situ Rb-Sr Mica Geochronology","authors":"Kyle P. Larson,&nbsp;Sudip Shrestha,&nbsp;Mark Button,&nbsp;John M. Cottle,&nbsp;Christopher J. Barnes","doi":"10.1111/ggr.70005","DOIUrl":"https://doi.org/10.1111/ggr.70005","url":null,"abstract":"<p>Mica crystals have a highly asymmetric structure, arranged in sheets of two tetrahedral layers bonded to a single octahedral layer. The individual sheets are only weakly bonded, leading to perfect basal cleavage. The recent proliferation of <i>in situ</i> laser ablation-based Rb-Sr geochronology of mica makes it critical to understand if orientation of the crystal lattice relative to the laser beam may impart a differential ‘matrix’ effect on Rb-Sr ratios during ablation. Analyses of mica crystals from eight different samples, including biotite, muscovite and phlogopite, mounted with their <i>c</i>-axes approximately parallel (flat-mounted) and perpendicular (vertically mounted) to the incident laser beam, result in dates that are statistically indistinguishable. Moreover, and consistent with previous work, analysis of vertically mounted crystals generally resulted in less within-spot variation in ⁸⁷Rb/⁸⁶Sr, and is, therefore, the recommended orientation for Rb-Sr geochronology measurements, where practical.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 4","pages":"705-713"},"PeriodicalIF":3.4,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145479897","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}