Bjurböle L/LL4 ordinary chondrite properties studied by Raman spectroscopy, X-ray diffraction, magnetization measurements and Mössbauer spectroscopy

Bjurböle L/LL4 ordinary chondrite was studied using scanning electron microscopy with energy dispersive spectroscopy, Raman X-ray diffraction, magnetization measurements and Mössbauer spectroscopy. The phase composition the relative iron fractions in iron-bearing phases were determined. unit cell parameters for olivine, orthopyroxene clinopyroxene are similar to those observed other chondrites. higher contents of forsterite enstatite detected by Magnetization showed that temperature ferrimagnetic-paramagnetic transition chromite is around 57 K saturation magnetic moment ~7 emu/g. values 57Fe hyperfine all components spectrum determined related corresponding phases. troilite compared data obtained selected L LL Fe2+ occupancies M1 M2 sites silicate crystals both diffraction Then, temperatures equilibrium cation distribution determined, two independent techniques, olivine as 666 850 K, respectively, 958 1136 respectively. Implications spectroscopy classification material indicate its being close group