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  1. No Access

    Chapter and Conference Paper

    Fe2+-Mg order–disorder study in orthopyroxenes from São João Nepomuceno (IVA) iron meteorite

    São João Nepomuceno (SJN) is an iron meteorite belonging to IVA chemical group. It consists of Fe-Ni metal matrix and silicate inclusions made of a coarse-grained mixture of tridymite, orthopyroxene and clinop...

    E. dos Santos, R. B. Scorzelli, M. E. Varela, P. Munayco in LACAME 2012 (2014)

  2. No Access

    Article

    Fe2+-Mg order–disorder study in orthopyroxenes from São João Nepomuceno (IVA) iron meteorite

    São João Nepomuceno (SJN) is an iron meteorite belonging to IVA chemical group. It consists of Fe-Ni metal matrix and silicate inclusions made of a coarse-grained mixture of tridymite, orthopyroxene and clinop...

    E. dos Santos, R. B. Scorzelli, M. E. Varela, P. Munayco in Hyperfine Interactions (2014)

  3. No Access

    Article

    57 Fe Mössbauer spectroscopy studies of chondritic meteorites from the Atacama Desert, Chile: Implications for weathering processes

    Some terrestrial areas have climatic and geomorphologic features that favor the preservation, and therefore, accumulation of meteorites. The Atacama Desert in Chile is among the most important of such areas, k...

    P. Munayco, J. Munayco, M. Valenzuela, P. Rochette, J. Gattacceca… in Hyperfine Interactions (2014)

  4. No Access

    Chapter and Conference Paper

    57Fe Mössbauer spectroscopy studies of chondritic meteorites from the Atacama Desert, Chile: Implications for weathering processes

    Some terrestrial areas have climatic and geomorphologic features that favor the preservation, and therefore, accumulation of meteorites. The Atacama Desert in Chile is among the most important of such areas, k...

    P. Munayco, J. Munayco, M. Valenzuela, P. Rochette, J. Gattacceca… in LACAME 2012 (2014)

  5. No Access

    Article

    Characterization of the firing conditions of archaeological Marajoara pottery by Mössbauer spectroscopy and X-ray diffraction

    Here we report on a study of samples from fragments of Marajoara ceramics using 57Fe Mössbauer spectroscopy and XRD. The Mössbauer spectra were measured at room temperature (RT) and at liquid helium temperature (...

    P. Munayco, R. B. Scorzelli in Hyperfine Interactions (2013)

  6. Article

    The New Peruvian Meteorite Carancas: Mössbauer Spectroscopy and X-Ray Diffraction Studies

    The Carancas meteorite fell on 15 September 2007 approximately 10 km south of Desaguadero, near Lake Titicaca, Peru, producing bright lights, clouds of dust in the sky and intense detonations. The Carancas met...

    P. Munayco, J. Munayco, M. E. Varela, R. B. Scorzelli in Earth, Moon, and Planets (2013)

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  7. Article

    Varre-Sai: The Recent Brazilian Fall

    Varre-Sai, the most recent Brazilian meteorite fall, on June 19th, 2010 at Varre-Sai, in Rio de Janeiro State, Brazil (20°51′41″S; 41°44′.80″W). At least eight masses (total ~3.5 kg) were recovered. Most are t...

    M. E. Zucolotto, L. L. Antonello, M. E. Varela, R. B. Scorzelli… in Earth, Moon, and Planets (2012)

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  8. Article

    Lavras do Sul: A New Equilibrated Ordinary L5 Chondrite from Rio Grande do Sul, Brazil

    The new Brazilian chondrite, Lavras do Sul, was found in 1985 at Lavras do Sul, Rio Grande do Sul State-Brazil (33°30′48″S; 53°54′65″W). It consists of a single mass weighing about 1 kg, covered by a black fus...

    M. E. Zucolotto, L. L. Antonello, M. E. Varela, R. B. Scorzelli… in Earth, Moon, and Planets (2012)

    Download PDF (740 KB) View Article

  9. No Access

    Chapter and Conference Paper

    Room temperature 57Fe Mössbauer spectroscopy of ordinary chondrites from the Atacama Desert (Chile): constraining the weathering processes on desert meteorites

    We report the results of a study on the weathering products of 21 meteorites found in the Atacama Desert (Chile) using room temperature 57Fe Mössbauer spectroscopy (MS). The meteorites are weathered ordinary chon...

    M. Valenzuela, Y. Abdu, R. B. Scorzelli, M. Duttine, D. Morata, P. Munayco in LACAME 2006 (2009)

  10. No Access

    Article

    Room temperature 57Fe Mössbauer spectroscopy of ordinary chondrites from the Atacama Desert (Chile): constraining the weathering processes on desert meteorites

    We report the results of a study on the weathering products of 21 meteorites found in the Atacama Desert (Chile) using room temperature 57Fe Mössbauer spectroscopy (MS). The meteorites are weathered ordinary chon...

    M. Valenzuela, Y. Abdu, R. B. Scorzelli, M. Duttine, D. Morata… in Hyperfine Interactions (2007)