Search results for "K feldspar"

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Structural Investigation of K-Feldspar KAlSi3O8Crystals by XRD and Raman Spectroscopy: An Application to Petrological Study of Luc Yen Pegmatites, Ye…

2016

K-feldspars in pegmatites from Luc Yen gem mining area, Yen Bai province, Vietnam were studied by X-ray fluorescence, X-ray powder diffraction and the Raman spectroscopy. Chemical analysis determined the K-feldspars in the form of (K0:8909Na0:0388Ca0:002Pb0:0042Cs0:0024Rb0:0338)(Al0:9975Fe0:0053Ti0:0004)Si2:988O8. Both X-ray powder diffraction and Raman spectroscopy indicated Luc Yen K-feldspars as orthoclase phase. Together with the values of Al content of the T1 tetrahedral sites in orthoclase, it is understood that Luc Yen pegmatites are of young ages (Cenozoic) and shallow intrusive types.

Materials science010504 meteorology & atmospheric sciencesGeochemistryGeneral Physics and Astronomy010502 geochemistry & geophysics01 natural sciencessymbols.namesakeraman spectroscopyaluminum silicatessymbolsRaman spectroscopyPegmatiteK feldspar0105 earth and related environmental sciencesActa Physica Polonica A

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