Meteoryt Campo del Cielo – podstawowe badania mineralogiczne wybranego okazu

• Authors: Marcelina Boczkowska , Patrycja Wójcik-Tabol

Title variants

EN

Campo del Cielo meteorite – basic mineralogical research of the chosen specimen

• Languages of publication: PL

Abstracts

EN

The carried out research concern Campo del Cielo meteorite. The specimen is a fragment of a meteoroid, which fall occurred 3950±90 years ago, in the northern areas of present-day Argentina. The aim of the study was a comparative analysis of the fragment in relation to the characteristics of the whole meteoroid, as well as gathering the existing knowledge about the meteorite rain Campo del Cielo. Metallographic section was made and then a series of point and area analyzes of the chemical composition were carried out in a scanning electron microscope. The metallic phase of the meteorite turned out to be relatively chemically homogeneous. The iron content for each area subjected to EDS microanalysis was in the range of 90–93%, while nickel content oscillated in the range of 6–10%. The distinct dominance of iron, which appears on the whole surface of the meteorite, indicates that the metallic phase is made of a kamacite crystal. The whole fragment can be called hexahedrite. Inclusions occupy a small percentage of the surface area of metallographic section. They were divided into inclusions containing phosphorus and other inclusions (containing Si, O, Ca, Al, Na). The occurrences of phosphorus associated with iron and nickel (subordinate) were identified as schreibersite [(Fe,Ni)3P]. This mineral showed interesting structures from the demixing and a certain regularity in distribution relative to the other inclusions. The research supplement the current knowledge about the whole meteoroid, confirming at the same time its heterogeneity. Despite the fact that it was part of the Campo del Cielo meteoroid before its disintegration, it has a chemical and structural composition characteristic only for itself, even if we talk about a slight deviation from the averaged features for the entire meteorite.

Keywords

EN

Campo del Cielo; inclusions; iron meteorite; meteoritics; schreibersite

Discipline

• GEOLOGY: GEOLOGY

• Publisher: Polskie Towarzystwo Meteorytowe
• Journal: Acta Societatis Metheoriticae Polonorum
• Year: 2021
• Volume: 12
• Pages: 17-30

Dates

published

2021

Contributors

author

Marcelina Boczkowska

• Instytut Nauk Geologicznych Uniwersytetu Jagiellońskiego

author

Patrycja Wójcik-Tabol

• Instytut Nauk Geologicznych Uniwersytetu Jagiellońskiego

References

• Álvarez A., 1926, Historia del Meteorito del Chaco, Editorial Jacobo Peuser, Buenos Aires, s. 222.
• Bild R.W., 1977, Silicate inclusions in group IAB irons and a relation to the anomalous stones Winona and Mt Morris (Wis), Geochimica et Cosmochimica Acta, 41, s. 1439–1456.
• Bolewski A., Manecki A., 1993, Mineralogia szczegółowa, Wydawnictwo Polskiej Agencji Ekologicznej, Warszawa.
• Buchwald V.F., 1975, Handbook of Iron Meteorites. University of California Press, Berkeley, s. 375.
• Cabanillas E.D., Palacios T.A., 2006, An hexahedrite meteorite from the Campo del Cielo Fall, Planetary and Space Science, 54, s. 303–309.
• Cassidy W.A., 1967, Meteorite field studies at Campo del Cielo, Sky and Telescope, 34, 1, s. 2–8.
• Cassidy W.A., Renard M.L., 1996, Discovering research value in the Campo del Cielo, Argentina, meteorite craters, Meteoritics & Planetary Science, 31, s. 433–448.
• Cassidy W.A., Villar L.M., Bunch T.E., Kohman T.P., Milton D.J., 1965, Meteorites and craters of Campo del Cielo, Argentina, Science, 149, 3688, s. 1055–1064.
• Clarke R.S., Scott E.R.D., 1980, Tetrataenite – ordered FeNi, a new mineral in meteorites, American Mineralogist, 65, s. 624–630.
• Cortelezzi C.R., 1996, Nuevos Aportes para el Conocimiento de la Schrebersita en un Meteorito de Campo del Cielo, Provincia de Chaco, Republica Argentina, 30 Reunion de Mineralogia y Metalogenia, Instituto de Recursos Minerales La Plata, Universidad Nacional de La Plata, 5, s. 273–275.
• Daubree G.A., 1877, Observations sur la structure interieure d’une des masses de fer natif d’Ovifak, Comptes Rendus des Seances de l’Acaddmie des Sciences, 84, s. 66–70.
• Giménez Benítez S.R., López A.M., Mammana L.A., 2014, Meteoritos de Campo del Cielo: Impactos en la cultura aborigen. Universidad Nacional de La Plata, http://fcaglp.fcaglp.unlp.edu.ar/~sixto/arqueo/meteoritos.htm [2014.03.09].
• Grady, M. M., Graham, A. L., 2000, Catalogue of meteorites, Cambridge University Press, Cambridge, s. 126.
• Heide F., Wlotzka F., 1995, Meteorites. Messengers from Space, Springer, Heidelberg, s. 102–103.
• Hintenberger H., Berghof W., 1970, Mass Spectrographic Determination of Trace Elements in Meteorites, [w:] K. Ogata, T. Hayakawa (red.), Recent Developments in Mass Spectroscopy, University of Tokyo Press, Tokyo, s. 657–665.
• Kurat G., Zinner E., Varela M.E., Ntaflos T., 2009, Sigrmet05: A silicate-graphite-metal inclusion from the Campo del Cielo (IAB) iron, 40th Lunar and Planetary Science Conference.
• Layus M.C., 1979, Estudio metalografico del meteorito Mataco Servicio de Asistencia Tecnica e Investigacion Metalurgica, Facultad de Ciencias Exactas e Ingenierý´a, Universidad Nacional de Rosario, Argentina, s. 11.
• Manecki A., 2013, Meteorytyka z elementami planetologii. Glosariusz, Wydawnictwo Mineralogiczne Mineralpress, Kraków, s. 22–25.
• Nagera J.J., 1926, Los Hoyos del Campo del Cielo y el Meteorito, Publicaciones de la Dirección General de Minas, Geología e Hidrología, 19, s. 1–24.
• Park F.R., Bunch T.E., Massalski T.B., 1966, A study of the silicate inclusions and other phases in the Campo del Cielo meteorite, Geochimica et Cosmochimica Acta, 30, 4, s. 399–414.
• Post J.E., Buchwald V.F., 1991, Crystal structure refinement of akaganéite, American Mineralogist, 76, s. 272–277.
• Pravdivtseva O., Meshik A., Hohenberg C.M., Kurat G., 2013, I-Xe ages of Campo del Cielo silicates as a record of the complex early history of the IAB parent body, Meteoritics & Planetary Science, 48, 12, s. 2480–2490.
• Renard M.L., Cassidy W.A., 1971, Entry trajectory and orbital calculations for the Crater 9 Meteorite, Campo del Cielo, Argentina, Journal of Geophysical Research, 76, 32, s. 7916–7923.
• Spencer L.J., 1933, Meteorite Craters as Topographic Features of the Earth’s surface, The Geographical Journal, 81, 3, s. 227–248.
• Tomkins A.G., Mare E.R., Raveggi M., 2013, Fe-carbide and Fe-sulfide liquid immiscibility in IAB meteorite, Campo del Cielo: Implications for iron meteorite chemistry and planetesimal core compositions, Geochimica et Cosmochimica Acta, 117, s. 80–98.
• Wlotzka F., Jarosewich E., 1977, Mineralogical and Chemical Compositions of Silicate Inclusions in the El Taco, Campo del Cielo, Iron Meteorite, w: B. Mason (red.), Smithsonian Contributions to the Earth Sciences, Mineral Sciences Investigations, Smithsonian Institution Press, Washington, 19, s. 104–125.

• Document Type: article