Analysis of hydrogen in olivine by SIMS: Evaluation of standards and protocol
-
Jed L. Mosenfelder
,
Marion Le Voyer
Abstract
We measured hydrogen concentrations in 12 olivines using secondary ion mass spectrometry (SIMS and NanoSIMS), cross-calibrated against Fourier transform infrared (FTIR) spectroscopy and nuclear reaction analysis (NRA). Five of these samples are routinely used for calibration in other laboratories. We assess the suitability of these olivines as standards based on over 300 SIMS analyses, comprising 22 separate calibrations. Seven olivines with 0-125 ppm H2O give highly reproducible results; in contrast to previous studies, the data are fit to well-constrained calibration lines with high correlation coefficients (r2 = 0.98-1). However, four kimberlitic megacrysts with 140-245 ppm H2O sometimes yield 16O1H/30Si ratios that have low internal precision and can vary by up to a factor of two even in sequential analyses. A possible cause of this behavior is the presence of sub-microscopic inclusions of hydrous minerals, such as serpentine. In most cases, however, we link the anomalous results to the presence of sub-micrometer to micrometer-scale pores (as small as 100 nm), which we imaged using SEM and NanoSIMS. These pores are interpreted to be fluid inclusions containing liquid H2O, other volatiles (including fluorine), and/or hydrous phase precipitates. Ionization of the contents of the pores contributes variably to the measured 16O1H, resulting in analyses with erratic depth profiles and corresponding high uncertainties (up to 16%, 2σmean). After filtering of these analyses using a simple criterion based on the error predicted by Poisson counting statistics, all the data fit well together. Our results imply that the Bell et al. (2003) calibration can be applied accurately to all olivines with IR bands from -3400-3700 cm-1, without the need for band-specific IR absorption coefficients.
© 2015 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- In situ stress-strain measurements in a deformation-DIA apparatus at P-T conditions of the upper part of the mantle transition zone
- Element diffusion rates in lunar granulitic breccias: Evidence for contact metamorphism on the Moon
- The crystal structure of franckeite, Pb21.7Sn9.3Fe4.0Sb8.1S56.9
- Ammonium vermiculite in schists from the Betic Cordillera (Spain)
- Natrolite is not a “soda-stone” anymore: Structural study of alkali (Li+), alkaline-earth (Ca2+, Sr2+, Ba2+) and heavy metal (Cd2+, Pb2+, Ag+) cation-exchanged natrolites
- Analysis of hydrogen in olivine by SIMS: Evaluation of standards and protocol
- New accurate elastic parameters for the forsterite-fayalite solid solution
- In-situ mid/far micro-FTIR spectroscopy to trace pressure-induced phase transitions in strontium feldspar and wadsleyite
- Structural study of the coherent dehydration of wadsleyite
- An atomic force microscopy study of diamond dissolution features: The effect of H2O and CO2 in the fluid on diamond morphology
- Unraveling the stacking structure in tubular halloysite using a new TEM with computer-assisted minimal-dose system
- High-pressure structural behavior of α-Fe2O3 studied by single-crystal X-ray diffraction and synchrotron radiation up to 25 GPa
- The IR vibrational properties of six members of the garnet family: A quantum mechanical ab initio study
- On the presence of OH defects in the zircon-type phosphate mineral xenotime, (Y,REE)PO4
- Cesium and strontium incorporation into zeolite-type phases during homogeneous nucleation from caustic solutions
- Electrical conductivity of albite at high temperatures and high pressures
- Crystal-chemical and structural characterization of fluorapatites in ejecta from Somma-Vesuvius volcanic complex
- In situ ion-microprobe determination of trace element partition coefficients for hornblende, plagioclase, orthopyroxene, and apatite in equilibrium with natural rhyolitic glass, Little Glass Mountain Rhyolite, California
- In situ FTIR investigations at varying temperatures on hydrous components in rutile
- Methods to analyze metastable and microparticulate hydrated and hydrous iron sulfate minerals
- Crystal chemistry of Ti-rich ferriallanite-(Ce) from Cape Ashizuri, Shikoku Island, Japan
- Replacement of pyrrhotite by pyrite and marcasite under hydrothermal conditions up to 220 °C: An experimental study of reaction textures and mechanisms
- Argandite, Mn7(VO4)2(OH)8, the V analogue of allactite from the metamorphosed Mn ores at Pipji, Turtmann Valley, Switzerland
- Murchisite, Cr5S6, a new mineral from the Murchison meteorite
Articles in the same Issue
- In situ stress-strain measurements in a deformation-DIA apparatus at P-T conditions of the upper part of the mantle transition zone
- Element diffusion rates in lunar granulitic breccias: Evidence for contact metamorphism on the Moon
- The crystal structure of franckeite, Pb21.7Sn9.3Fe4.0Sb8.1S56.9
- Ammonium vermiculite in schists from the Betic Cordillera (Spain)
- Natrolite is not a “soda-stone” anymore: Structural study of alkali (Li+), alkaline-earth (Ca2+, Sr2+, Ba2+) and heavy metal (Cd2+, Pb2+, Ag+) cation-exchanged natrolites
- Analysis of hydrogen in olivine by SIMS: Evaluation of standards and protocol
- New accurate elastic parameters for the forsterite-fayalite solid solution
- In-situ mid/far micro-FTIR spectroscopy to trace pressure-induced phase transitions in strontium feldspar and wadsleyite
- Structural study of the coherent dehydration of wadsleyite
- An atomic force microscopy study of diamond dissolution features: The effect of H2O and CO2 in the fluid on diamond morphology
- Unraveling the stacking structure in tubular halloysite using a new TEM with computer-assisted minimal-dose system
- High-pressure structural behavior of α-Fe2O3 studied by single-crystal X-ray diffraction and synchrotron radiation up to 25 GPa
- The IR vibrational properties of six members of the garnet family: A quantum mechanical ab initio study
- On the presence of OH defects in the zircon-type phosphate mineral xenotime, (Y,REE)PO4
- Cesium and strontium incorporation into zeolite-type phases during homogeneous nucleation from caustic solutions
- Electrical conductivity of albite at high temperatures and high pressures
- Crystal-chemical and structural characterization of fluorapatites in ejecta from Somma-Vesuvius volcanic complex
- In situ ion-microprobe determination of trace element partition coefficients for hornblende, plagioclase, orthopyroxene, and apatite in equilibrium with natural rhyolitic glass, Little Glass Mountain Rhyolite, California
- In situ FTIR investigations at varying temperatures on hydrous components in rutile
- Methods to analyze metastable and microparticulate hydrated and hydrous iron sulfate minerals
- Crystal chemistry of Ti-rich ferriallanite-(Ce) from Cape Ashizuri, Shikoku Island, Japan
- Replacement of pyrrhotite by pyrite and marcasite under hydrothermal conditions up to 220 °C: An experimental study of reaction textures and mechanisms
- Argandite, Mn7(VO4)2(OH)8, the V analogue of allactite from the metamorphosed Mn ores at Pipji, Turtmann Valley, Switzerland
- Murchisite, Cr5S6, a new mineral from the Murchison meteorite
