scholarly journals In Situ Oxygen Isotope Determination in Serpentine Minerals by Ion Microprobe: Reference Materials and Applications to Ultrahigh-Pressure Serpentinites

2018 ◽  
Vol 42 (4) ◽  
pp. 459-479 ◽  
Author(s):  
Maria Rosa Scicchitano ◽  
Daniela Rubatto ◽  
Jörg Hermann ◽  
Tingting Shen ◽  
José Alberto Padrón-Navarta ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Reference Materials ◽  
Ultrahigh Pressure ◽  
Ion Microprobe ◽  
Serpentine Minerals ◽  
Isotope Determination

High‐Mg# Olivine, Clinopyroxene and Orthopyroxene Reference Materials for In Situ Oxygen Isotope Determination

2019 ◽  
Vol 43 (4) ◽  
pp. 585-593 ◽  
Author(s):  
Guo‐Qiang Tang ◽  
Ben‐Xun Su ◽  
Qiu‐Li Li ◽  
Xiao‐Ping Xia ◽  
Jie‐Jun Jing ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Reference Materials ◽  
Isotope Determination

scholarly journals U-Pb isotopic dating of columbite-tantalite minerals: Development of reference materials and in situ applications by ion microprobe

2019 ◽  
Vol 512 ◽  
pp. 69-84 ◽  
Author(s):  
Hélène Legros ◽  
Julien Mercadier ◽  
Johan Villeneuve ◽  
Rolf L. Romer ◽  
Etienne Deloule ◽  
...  
Keyword(s):  
Reference Materials ◽  
Ion Microprobe ◽  
Isotopic Dating

Origin of Monte Rosa whiteschist from in-situ tourmaline and quartz oxygen isotope analysis by SIMS using new tourmaline reference materials

2019 ◽  
Vol 104 (10) ◽  
pp. 1503-1520 ◽  
Author(s):  
Katharina Marger ◽  
Cindy Luisier ◽  
Lukas P. Baumgartner ◽  
Benita Putlitz ◽  
Barbara L. Dutrow ◽  
...  
Keyword(s):  
High Pressure ◽  
Oxygen Isotope ◽  
Reference Materials ◽  
Secondary Ion Mass Spectrometry ◽  
Isotope Composition ◽  
Isotope Analysis ◽  
Oxygen Isotope Composition ◽  
The Matrix ◽  
Monte Rosa

Abstract A series of tourmaline reference materials are developed for in situ oxygen isotope analysis by secondary ion mass spectrometry (SIMS), which allow study of the tourmaline compositions found in most igneous and metamorphic rocks. The new reference material was applied to measure oxygen isotope composition of tourmaline from metagranite, meta-leucogranite, and whiteschist from the Monte Rosa nappe (Western Alps). The protolith and genesis of whiteschist are highly debated in the literature. Whiteschists occur as 10 to 50 m tube-like bodies within the Permian Monte Rosa granite. They consist of chloritoid, talc, phengite, and quartz, with local kyanite, garnet, tourmaline, and carbonates. Whiteschist tourmaline is characterized by an igneous core and a dravitic overgrowth (XMg > 0.9). The core reveals similar chemical composition and zonation as meta-leucogranitic tourmaline (XMg = 0.25, δ18O = 11.3–11.5‰), proving their common origin. Dravitic overgrowths in whiteschists have lower oxygen isotope compositions (8.9–9.5‰). Tourmaline in metagranite is an intermediate schorl-dravite with XMg of 0.50. Oxygen isotope data reveal homogeneous composition for metagranite and meta-leucogranite tourmalines of 10.4–11.3‰ and 11.0–11.9‰, respectively. Quartz inclusions in both meta-igneous rocks show the same oxygen isotopic composition as the quartz in the matrix (13.6–13.9‰). In whiteschist the oxygen isotope composition of quartz included in tourmaline cores lost their igneous signature, having the same values as quartz in the matrix (11.4–11.7‰). A network of small fractures filled with dravitic tourmaline can be observed in the igneous core and suggested to serve as a connection between included quartz and matrix, and lead to recrystallization of the inclusion. In contrast, the igneous core of the whiteschist tourmaline fully retained its magmatic oxygen isotope signature, indicating oxygen diffusion is extremely slow in tourmaline. Tourmaline included in high-pressure chloritoid shows the characteristic dravitic overgrowth, demonstrating that chloritoid grew after the metasomatism responsible for the whiteschist formation, but continued to grow during the Alpine metamorphism. Our data on tourmaline and quartz show that tourmaline-bearing white-schists originated from the related meta-leucogranites, which were locally altered by late magmatic hydrothermal fluids prior to Alpine high-pressure metamorphism.

Measurement of in-situ oxygen isotope ratios in monazite by SHRIMP ion microprobe: Standards, protocols and implications

2014 ◽  
Vol 380 ◽  
pp. 84-96 ◽  
Author(s):  
Daniela Rubatto ◽  
Benita Putlitz ◽  
Laure Gauthiez-Putallaz ◽  
Céline Crépisson ◽  
Ian S. Buick ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Isotope Ratios ◽  
Ion Microprobe ◽  
Oxygen Isotope Ratios

scholarly journals Beryl Reference Materials for In Situ Oxygen Isotope Determination

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1322
Author(s):  
Xiaoxiao Ling ◽  
Qiuli Li ◽  
Lianjun Feng ◽  
Di Zhang ◽  
Yu Liu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Oxygen Isotope ◽  
Reference Materials ◽  
Secondary Ion Mass Spectrometry ◽  
Isotope Analysis ◽  
High Sensitivity ◽  
Isotope Ratio Mass Spectrometry ◽  
Isotopic Analysis ◽  
Good Tool

The mineral beryl (Be3Al2(SiO3)6) has the most abundant phase with industrial value for extracting a critical metal—beryllium. Due to multi-stage, fluid-induced growth, individual beryl grains may yield complex geochemical records, revealing variations in the oxygen isotopes of the fluids from which they crystallize. Secondary ion mass spectrometry (SIMS) with high sensitivity and high spatial resolution represents a good tool for in situ isotopic analysis. SIMS oxygen analyses require matrix-matched reference materials to calibrate instrumental mass fractionations during measurement. In this work, the oxygen isotope homogeneities of six beryl samples with different compositions (BS1, BS2, BS3, BS4, BS5, and BS6) were documented by SIMS. These samples’ recommended oxygen isotope compositions were characterized by laser fluorination isotope ratio mass spectrometry (IRMS). This study suggests that there is no matrix effect related to composition variation in beryl SIMS oxygen isotope analysis. The recommended δ18O values of the four reference materials, BS1, BS2, BS4, and BS5, were 15.01 ± 0.34‰ (2 standard deviations, 2 SD), 7.53 ± 0.16‰ (2 SD), 2.38 ± 0.14‰ (2 SD), and 10.72 ± 0.44‰ (2 SD), respectively. Therefore, BS1, BS2, BS4, and BS5 are recommended as suitable reference materials for in situ mineral beryl oxygen isotope microanalysis.

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