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Brazilian Journal of Physics

Print version ISSN 0103-9733On-line version ISSN 1678-4448


PADUANI, C.; PEREZ, C. A. Samudio  and  ARDISSON, J. D.. A Mössbauer effect study of the Soledade meteorite. Braz. J. Phys. [online]. 2005, vol.35, n.3a, pp.667-669. ISSN 0103-9733.

We performed a Mössbauer spectroscopy study of the iron meteorite Soledade. This meteorite, which consists of a metallic matrix, is an octahedrite with polycrystalline troilite, cohenite, schreibersite and rhabdites as major constituents. A chemical analysis indicates 6.78 % Ni, 0.46% Co, besides traces of Cu, Cr, Ga, Ge, As, Sb, W, Re, Ir and Au. No traces of silicates have been found and no oxygen was detected. Iron is appearing in the austhenitic phase and alloyed with nickel. An analysis of the Mössbauer spectra at room temperature indicates that the Fe-Ni phase is homogeneously distributed in the matrix, although variations in the composition between different regions are observed.

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