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Found 29 dataset(s) matching "EPMA".
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This data dictionary describes most of the possible output options given in the Probe for EPMA software package developed by Probe Software. Examples of the data output options include sample...
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This data release comprises geochemical point analyses of magnetite by electron probe microanalyzer (EPMA) and sample imagery acquired by a combination of scanning electron, reflected light, and...
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This data release contains selected results of whole-rock and glass analyses of lava samples collected during the 2018 eruption of Kilauea’s lower East Rift Zone (LERZ). Included are sampling-site...
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In situ geochemical data were obtained for pyrite crystals and native gold from two distinct vein sets in the Grass Valley gold district, California. Samples of the N-S (north-south-trending)...
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Iron oxide-apatite (IOA) deposits of the Adirondack Mountains of New York locally contain elevated REE concentrations (e.g. Taylor and others, 2019). Critical to evaluating resource potential is...
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Kilauea volcano (Hawaii, USA) is a shield volcano that exhibits both effusive and explosive eruptive activity. Although Kilauea has been predominantly built through effusive eruptions, explosive...
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This data release includes geochemical, x-ray diffraction mineralogical, and electron probe microanalysis (EPMA) data on rocks, soils, and sediments collected near the Orange Hill and Bond Creek...
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Mine waste, including mill tailings, could host substantial critical mineral resources. Developing an understanding of the mineral hosts and occurrence of critical minerals in mine waste is...
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Major, minor, and trace element data, as well as backscattered electron images, were collected for clinopyroxene crystals in alkaline silicate rocks (phonolite, tephriphonolite, latite,...
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This dataset contains major and trace element compositions for a sample of basalt recovered from Rangitoto Island, New Zealand. Both bulk rock and microanalytical observations are made and...
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The table contains oxide and cation compositions of pyroxene grains from drill core in the Duluth Complex. The oxides were determined by electron probe microanalysis (EPMA) and are reported in...
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These data comprise chemical analyses in weight percent of oxides, as well as chlorine and fluorine, conducted using a JEOL JXA-8900 electron microprobe analyzer (EPMA) on amphiboles, pyroxenes,...
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The Goat Rocks volcanic cluster is a major andesitic locus in the southern Washington Cascade Range that persisted for approximately 3 million years (3.1 Ma to 115 ka) while coeval mafic volcanoes...
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The table contains oxide and cation compositions of olivine grains from drill core of the Duluth Complex, Minnesota. The oxides were determined by electron probe microanalysis (EPMA) and are...
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Conventional methods of assessing organic matter (OM) thermal maturity have limitations and often fail to reflect the geochemical heterogeneity between individual organic phases in mudstone...
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A limited suite of samples for the 2020–2023 Kīlauea eruptions within Kaluapele (the summit caldera) were collected by the U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) field teams...
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This dataset includes radiocarbon ages, wavelength dispersive X-ray fluorescence (WD-XRF) major-oxide and trace-element whole-rock analyses, and glass, olivine, and pyroxene analyses by electron...
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The table contains oxide and cation compositions of feldspar grains from drill core of the Duluth Complex. The oxides were determined by electron probe microanalysis (EPMA) and are are reported in...
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NeXLSpectrum is a collection of tools for reading, writing and processing X-ray spectra. It includes methods to read common spectrum and hyperspectrum formats, extract spectral data, plot the...
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The genetic origin of many gold deposits, including Pogo in Alaska, remains controversial with questions as to whether they formed due to magmatic-hydrothermal or metamorphic-hydrothermal fluids. ...
