Reduced chromium in olivine grains from lunar basalt 15555: X-ray Absorption Near Edge Structure (XANES)

The oxidation state of Cr in 200 μm regions within individual lunar olivine and pyroxene grains from lunar basalt 15555 was inferred using X-ray Absorption Near Edge Structure (XANES). Reference materials had previously been studied by optical absorption spectroscopy and included Crbearing borosilic...

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Veröffentlicht in:	Geochimica et cosmochimica acta 1993, Vol.57 (2), p.461-468
Hauptverfasser:	Sutton, S.R, Jones, K.W, Gordon, B, Rivers, M.L, Bajt, S, Smith, J.V
Format:	Artikel
Sprache:	eng
Schlagworte:	ABSORPTION SPECTROSCOPY BASALT CHEMICAL ANALYSIS CHROMIUM CRYSTALLIZATION ELEMENTS ENERGY DEPENDENCE IGNEOUS ROCKS INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY Lunar And Planetary Exploration MAGMA METALS MINERALS OLIVINE OXYGEN COMPOUNDS PHASE TRANSFORMATIONS PYROXENES QUALITATIVE CHEMICAL ANALYSIS ROCKS SILICATE MINERALS SILICATES SILICON COMPOUNDS SPECTROSCOPY TRANSITION ELEMENTS VALENCE VOLCANIC ROCKS 400101 > Activation, Nuclear Reaction, Radiometric & Radiochemical Procedures X-RAY SPECTROSCOPY
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