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A New Look at the Galim (a) and Galim (b) Meteorites

Published online by Cambridge University Press:  05 July 2018

Mireille Christophe Michel-Lévy  and
Michèle Bourot-Denise
Mireille Christophe Michel-Lévy
Affiliation:
Laboratoire de Minéralogie-Cristallographie associé au CNRS, Université Paris 6, 4 Place Jussieu, 75252 Paris, Cedex 05, France
Michèle Bourot-Denise
Affiliation:
Laboratoire de Minéralogie, Muséum d'Histoire Naturelle, Paris, France
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Abstract

Small stones were recovered from a meteorite shower observed in Cameroon on November 13, 1952. The majority are LL6 specimens, Galim (a), but one is a chondrule-rich enstatite chondrite, Galim (b). Petrology and mineral chemistry were determined on polished sections of both types. Galim (a) has undergone multiple brecciation. During the first, chromite apparently recrystallized in healed fractures under more reducing conditions than those which prevailed when the silicates recrystallized. Galim (b) shows some features of petrologic type 3 but differs considerably from the other unequilibrated E chondrites. It is suggested that Galim (a) and Galim (b) belong to the same meteorite shower.

Keywords

meteoriteGalimmeteorite showerCameroonenstatite chondrite
Type
Meteorite Studies
Information
Mineralogical Magazine , Volume 52 , Issue 367 , September 1988 , pp. 519 - 525
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

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References

Bukovanska, M., Jakés, P., Pernicka, E., and El Goresy, A. (1983) Usti nad Orlici: A new L6 chondrite from Czechoslovakia. Meteoritics 18, 223-40.Google Scholar
Bunch, T.E., Keil, K., and Snetsinger, K.G. (1967) Chromite composition in relation to chemistry and texture of ordinary chondrites. Geochim. Cosmochim. Acta 31, 156-982.Google Scholar
Jeremine, E. (1953) Sur une nouvelle chute de météorite au Cameroun. C. R. Acad. Sci. Paris 237, 174-02.Google Scholar
Kretz, R. (1982) Transfer and exchange equilibria in a portion of the pyroxene quadrilatera as deduced from natural and experimental data. Geochim. Cosmochim. Acra 46, 411-21.Google Scholar
Mason, B., and Wiik, H.B. (1964) The amphoterites and meteorites of similar composition. Ibid. 28, 533-8.Google Scholar
Orcel, J. and Jeremine, E. (1958) Sur la chondrite de Galim. 83e Congrés des Sociétés Savantes, 211-17.Google Scholar
Pellas, P. (1973) Irradiation history of grain aggregates in ordinary chondrites. Possible clues to the advanced stages of accretion. From plasma to planets. Wiley, 65-92.Google Scholar
Rubin, A.E., Scott, E.R.D., and Keil, K. (1982) Microchondrule-bearing clast in the Piancaldoli LL3 meteorite: a new kind of type 3 chondrite and its relevance to the history of chondrules. Geochim. Cosmochim. Acta 46, 1763-76.Google Scholar
Weeks, K.S., and Sears, D.W.G. (1985) Chemical and physical studies of type 3 chondrites. V: the enstatite chondrites. Ibid. 49, 1525-36.Google Scholar