Review of High-Precision Sr Isotope Analyses of Low-Sr Geological Samples

2015 ◽  
Vol 26 (5) ◽  
pp. 763-774 ◽  
Author(s):  
Jie Lin ◽  
Yongsheng Liu ◽  
Haihong Chen ◽  
Lian Zhou ◽  
Zhaochu Hu ◽  
...  
Keyword(s):  
High Precision ◽  
Geological Samples ◽  
Sr Isotope ◽  
Isotope Analyses

Rapid decomposition of geological samples by ammonium bifluoride (NH 4 HF 2 ) for combined Hf‐Nd‐Sr isotope analyses

2021 ◽  
Author(s):  
Gábor Újvári ◽  
Urs Klötzli ◽  
Monika Horschinegg ◽  
Wencke Wegner ◽  
Dorothee Hippler ◽  
...  
Keyword(s):  
Geological Samples ◽  
Sr Isotope ◽  
Rapid Decomposition ◽  
Ammonium Bifluoride ◽  
Isotope Analyses

An improved separation scheme for Sr through fluoride coprecipitation combined with a cation-exchange resin from geological samples with high Rb/Sr ratios for high-precision determination of Sr isotope ratios

2020 ◽  
Vol 35 (5) ◽  
pp. 953-960
Author(s):  
Wen-Gang Liu ◽  
Shuang Wei ◽  
Jian Zhang ◽  
Cong Ao ◽  
Fu-Tian Liu ◽  
...  
Keyword(s):  
Cation Exchange ◽  
High Precision ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Separation Scheme ◽  
Geological Samples ◽  
Sr Isotope ◽  
Precision Determination ◽  
High Precision Determination

A new separation method for Sr involving HF coprecipitation combined with AG50 resin from samples with high Rb/Sr ratios.

scholarly journals High precision Sr isotope analyses in apatite by LA-MC-ICP-MS: from mineral inclusions in zircon to crustal evolution models

2021 ◽  
Author(s):  
Anda Buzenchi ◽  
Hugo Moreira ◽  
Olivier Bruguier ◽  
Delphine Bosch ◽  
Bruno Dhuime
Keyword(s):  
High Precision ◽  
Crustal Evolution ◽  
Sr Isotope ◽  
Mineral Inclusions ◽  
Icp Ms ◽  
Isotope Analyses

785 nm femtosecond laser ablation for improved precision and reduction of interferences in Sr isotope analyses using MC-ICP-MS

2011 ◽  
Vol 26 (2) ◽  
pp. 341-351 ◽  
Author(s):  
Zhaoping Yang ◽  
Brian J. Fryer ◽  
Henry P. Longerich ◽  
Joel E. Gagnon ◽  
Iain M. Samson
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Sr Isotope ◽  
Icp Ms ◽  
Isotope Analyses

scholarly journals High-Precision In Situ 87Sr/86Sr Analyses through Microsampling on Solid Samples: Applications to Earth and Life Sciences

2018 ◽  
Vol 2018 ◽  
pp. 1-20 ◽  
Author(s):  
Sara Di Salvo ◽  
Eleonora Braschi ◽  
Martina Casalini ◽  
Sara Marchionni ◽  
Teresa Adani ◽  
...  
Keyword(s):  
High Precision ◽  
Life Sciences ◽  
Magma Ascent ◽  
Forensic Sciences ◽  
Sr Isotope ◽  
High Performing ◽  
Accuracy And Precision ◽  
Wide Range ◽  
Significant Case

An analytical protocol for high-precision, in situ microscale isotopic investigations is presented here, which combines the use of a high-performing mechanical microsampling device and high-precision TIMS measurements on micro-Sr samples, allowing for excellent results both in accuracy and precision. The present paper is a detailed methodological description of the whole analytical procedure from sampling to elemental purification and Sr-isotope measurements. The method offers the potential to attain isotope data at the microscale on a wide range of solid materials with the use of minimally invasive sampling. In addition, we present three significant case studies for geological and life sciences, as examples of the various applications of microscale 87Sr/86Sr isotope ratios, concerning (i) the pre-eruptive mechanisms triggering recent eruptions at Nisyros volcano (Greece), (ii) the dynamics involved with the initial magma ascent during Eyjafjallajökull volcano’s (Iceland) 2010 eruption, which are usually related to the precursory signals of the eruption, and (iii) the environmental context of a MIS 3 cave bear, Ursus spelaeus. The studied cases show the robustness of the methods, which can be also be applied in other areas, such as cultural heritage, archaeology, petrology, and forensic sciences.

Evaluation of Optimized Procedures for High-Precision Lead Isotope Analyses of Seawater by Multiple Collector Inductively Coupled Plasma Mass Spectrometry

2020 ◽  
Vol 92 (16) ◽  
pp. 11232-11241
Author(s):  
Alex Griffiths ◽  
Hollie Packman ◽  
Yee-Lap Leung ◽  
Barry J. Coles ◽  
Katharina Kreissig ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Precision ◽  
Inductively Coupled Plasma ◽  
Lead Isotope ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Isotope Analyses

Celestine discovered in Hawaiian basalts

2020 ◽  
Vol 105 (1) ◽  
pp. 52-57
Author(s):  
Michael O. Garcia ◽  
Eric Hellebrand
Keyword(s):  
Oceanic Islands ◽  
Sr Isotope ◽  
Fine Grained ◽  
Host Basalt ◽  
Mid Ocean Ridge ◽  
The Matrix ◽  
First Occurrence ◽  
Oceanic Basalts ◽  
Ocean Ridge ◽  
Isotope Analyses

Abstract We report here the first occurrence of celestine (SrSO4) in recent oceanic basalts. Celestine was found in moderately altered accidental volcanic blocks from Ka‘ula Island, a rejuvenated tuff cone in the northern Hawaiian Islands. This occurrence is novel not only for the presence of celestine but also for the absence of barite, the sulfate mineral most commonly found in oceanic hydrothermal deposits. Celestine was found lining vesicles and partially fillings voids within the matrix of several high Sr (2200–6400 ppm) Ka‘ula basalts. High-quality wavelength-dispersive microprobe analyses of celestine are reported here for near end-member celestine (>90%). The Ka‘ula celestine deposits are compositionally heterogeneous with large variations in Ba content (0.9–7.5 wt%) within single mineral aggregates. The most likely source of the Sr for celestine in the Ka‘ula basalts was the host basalt, which contains ~1200 ppm. This is about 10 times higher than normally found in mid-ocean ridge basalts and 4 times greater than commonly observed in Hawaiian basalts. Hydrothermal alteration by S-bearing fluids related to the eruption that transported these accidentally fragments probably mobilized Sr in the blocks. These S-rich solutions later precipitated celestine during or following the eruption. We were unable to confirm the origin for the Sr via Sr isotope measures because the Ka‘ula celestine was too fine grained, friable, and widely dispersed to be concentrated for Sr isotope analyses. Future studies of basalts from active volcanoes on oceanic islands, especially for basalts with elevated Sr contents (>1000 ppm), should be aware of the possible presence of celestine in moderately altered lavas.

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