An assessment of nuclear microprobe analyses of B in silicate minerals

H Skogby, Per Kristiansson, U Halenius

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Sammanfattning

With recent findings of substantial amounts of B in rock-forming minerals, it has become evident a need exists for microprobe techniques allowing quantitative B determinations in minerals. A microprobe method based on the nuclear reaction B-11(p,alpha)2alpha has the potential to become a powerful tool for analyses of minerals with B contents spanning a wide concentration range. In this paper, we present nuclear microprobe analyses of B in a set of silicate minerals containing stoichiometric concentrations of B in the range 1.9-8.8 wt%. Our results strongly indicate that nuclear reaction analyses of silicates utilizing the B-11(p,alpha)2alpha nuclear reaction are virtually matrix-insensitive, and saturation effects are negligible within the studied range of B concentrations. This finding suggests that it is adequate to use a single B standard for calibration purposes for analyses covering wide ranges of B concentrations in silicates. In addition, we demonstrate how B-concentration maps of high contrast and resolution may be produced by scanning the proton beam over the samples.
Originalspråkengelska
Sidor (från-till)1601-1604
TidskriftAmerican Mineralogist
Volym88
Utgåva10
StatusPublished - 2003

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Nuclear Physics (Faculty of Technology) (011013007)

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