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micro-X-ray fluorescence

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Journal Article
Published: 01 October 2009
European Journal of Mineralogy (2009) 21 (5): 927-945.
...Sylvia Schmitz; Andreas Möller; Max Wilke; Wolfgang Malzer; Birgit Kanngiesser; Romain Bousquet; Alfons Berger; Senecio Schefer Abstract A confocal set-up for three-dimensional (3D) micro X-ray fluorescence (micro-XRF) was used at the mySpot beamline at BESSY II, which allows compositional depth...
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Journal Article
Published: 01 November 2005
American Mineralogist (2005) 90 (11-12): 1740-1747.
... the petrogenetic sources of diamonds in a given deposit. The objective of the present work is to develop semi-quantitative analytical tools for non-destructive in situ identification and characterization of mineral inclusions in diamonds using synchrotron micro-X-ray Fluorescence (μSXRF) spectroscopy and micro-X...
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Image
Schematic of a synchrotron-based <b>micro</b>-<b>X</b>-<b>ray</b> <b>fluorescence</b>&#x2F;<b>X</b>-<b>ray</b> powder diff...
in > Elements
Published: 01 February 2016
F igure 4 Schematic of a synchrotron-based micro-X-ray fluorescence/X-ray powder diffraction (μ-XRF/μ-XRPD) combined scanning experiment. The primary X-ray beam (21 keV, focused to 0.4 × 0.4 μm 2 diameter) scans the paint cross section and irradiates a cylinder of material from which XRF
Image
Fe <b>micro</b>-<b>X</b>-<b>ray</b> <b>fluorescence</b> (<b>micro</b>-XRF) tri-colored map of characteristic c...
in > Elements
Published: 01 June 2017
Figure 4 Fe micro-X-ray fluorescence (micro-XRF) tri-colored map of characteristic coatings on primary quartz grains in a polished thin section. The map shows the distribution of silicon (green), iron plus manganese (red), and arsenic (blue). The white-dashed rectangle indicates the area shown
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<b>Micro</b>-<b>X</b>-<b>ray</b> <b>fluorescence</b> compositional maps of Ca (blue) and K (yellow) in ...
Published: 09 November 2017
Figure 7. Micro-X-ray fluorescence compositional maps of Ca (blue) and K (yellow) in plagioclase phenocrysts (Plag, outlined in white) from two granitoid samples. Other phases present include quartz (Qtz), hornblende (Hbl), biotite (Bt), and K-feldspar.
Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.267.01.02
EISBN: 9781862395152
... describes an innovative micro-X-ray fluorescence spectrometer that can measure spot sizes in the range of 50 μm, with incremental step sizes down to 10 μm. The analysis is non-destructive so the sediment core is preserved and available for other investigations. This paper describes the new instrument...
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Journal Article
Published: 01 June 2011
The Canadian Mineralogist (2011) 49 (3): 809-822.
... of boron products. Most previous studies and remediation efforts of arsenic contamination in borate deposits have focused on sulfarsenides. Inductively coupled plasma – mass spectrometry (ICP–MS) analysis and synchrotron micro-X-ray fluorescence (μ-SXRF) mapping reveal that colemanite, a major borate ore...
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Series: Clay Minerals Society Workshop Lectures
Published: 01 January 2016
DOI: 10.1346/CMS-WLS-21-6
EISBN: 9781881208471
... Abstract The development of complementary imaging techniques at beamline I18 at Diamond Light Source (Didcot, UK) to investigate the microstructure of inorganic materials is described. In particular, the use of X-ray micro-imaging techniques to understand the effect of alpha radiation...
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Series: Clay Minerals Society Workshop Lectures
Published: 01 January 2016
DOI: 10.1346/CMS-WLS-21-9
EISBN: 9781881208471
... of the preface for this volume. A typical diamond wire-cut section of a secondary drill-core is depicted in Figure 1 a. The interface between the quartz-filled injection borehole (left side) and the rock matrix is clearly visible. At first, synchrotron-based microscopic X-ray fluorescence (micro-XRF) and LA...
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Journal Article
Journal: Geosphere
Published: 01 February 2011
Geosphere (2011) 7 (1): 79-86.
... chemical information. The combination of μCT with micro-X-ray fluorescence (μXRF) and X-ray diffraction (XRD) allows segmentation and identification of the different minerals at the surface of the sample. Combining this information with the 3D density model obtained through μCT scanning of the granite...
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Journal Article
Published: 01 June 2010
Clays and Clay Minerals (2010) 58 (3): 377-387.
... microscopy (SEM), synchrotron based micro-X-ray diffraction (μ-XRD), and micro X-ray fluorescence (μ-SXRF) spectroscopy were used to investigate precipitates from the surface horizon of an organic soil (Histosol) at a site that once contained a lead smelter. Soil samples were collected from 0 to ~10 cm depth...
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Journal Article
Published: 01 October 2016
Clays and Clay Minerals (2016) 64 (5): 523-536.
...Seungyeol Lee; Huifang Xu Abstract Freshwater ferromanganese nodules (FFN) from Green Bay, Lake Michigan have been investigated by X-ray powder diffraction (XRD), micro X-ray fluorescence (XRF), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM...
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Journal Article
Published: 01 February 2015
American Mineralogist (2015) 100 (2-3): 451-458.
... peak centroids correlate well with lattice size, as measured by X-ray diffraction (XRD). Additional analyses of the feldspar samples by electron microprobe analysis (EMP), particle-induced X-ray emission spectroscopy (PIXE), energy-dispersive micro-X-ray fluorescence spectroscopy (μXRF), and/or laser...
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Journal Article
Published: 24 August 2018
Journal of the Geological Society (2018) 175 (6): 903-914.
... destroyed by bioturbation. Here we use a novel combination of techniques to relate microscopic sediment fabric features to processes at the lake basin scale. X-radiography and micro-X-ray fluorescence analysis of cores are complemented by back-scattered electron imagery and energy-dispersive X-ray...
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Journal Article
Published: 01 February 2018
Clays and Clay Minerals (2018) 66 (1): 1-8.
... electron diffraction (SAED) patterns, energy dispersive spectroscopy (EDS), electron energy loss spectroscopy (EELS), and micro X-ray fluorescence (µ-XRF). In the yellow sediment, K-nontronite and feroxyhyte (δ’-FeO(OH)) were the dominant mineral phases, while Mg-rich smectite (saponite), chlorite...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 2014
GSA Bulletin (2014) 126 (3-4): 481-498.
... sequences extracted from two lakes, Villarrica and Calafquén, in the volcanically and seismically active Chilean Lake District. Using a combination of microX-ray fluorescence (µXRF) scanning, microfacies analysis, grain-size analysis, color analysis, and magnetic-susceptibility measurements, we detect...
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Journal Article
Journal: PALAIOS
Published: 01 February 2013
PALAIOS (2013) 28 (2): 99-115.
... a combination of high-resolution petrography, micro X-ray fluorescence and wavelength dispersive spectroscopy, C isotopes, and sedimentary context to provide information on geobiological processes occurring at the sediment-water interface. Interestingly, both of these Proterozoic examples are associated...
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Journal Article
Journal: Geology
Published: 01 November 2012
Geology (2012) 40 (11): 1047-1050.
... sediment microfacies analyses and high-resolution micro-X-ray fluorescence element scanning allow us to identify 157 detrital event layers deposited in spring–summer and to discriminate between regional flood and local debris flow deposits. Higher spring–summer flood activity with a mean event recurrence...
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Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP336.16
EISBN: 9781862395848
... by bulk ICP-MS analysis, ion microprobe and synchrotron-based micro-X-ray fluorescence. Vadose water penetrates 70 m through Triassic limestones (with some Pb–Zn mineralization) to the chamber Säulenhalle where the stalagmites were collected. Strong seasonal ventilation in the cave leads to low PCO 2...
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Journal Article
Published: 01 November 2009
Vadose Zone Journal (2009) 8 (4): 1004-1012.
.... Using a novel diffusion cell, coupled with micro-x-ray fluorescence and absorption spectroscopies, we determined that diffusion-controlled gradients in Fe 2+ (aq) result in a complex array of spatially distributed secondary mineral phases. At the diffusive pore entrance, where Fe 2+ concentrations...
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