Mineralogy and petrology of two ordinary chondrites and their correlation with other meteorites

• Autorzy: Owocki K. , Pilski A.

Identyfikatory

DOI

10.2478/v10002-009-0009-9

• Języki publikacji: EN

Abstrakty

EN

Two ordinary chondrites are compared and classified using transmitted and reflected light microscopy and electron microprobe analyses. Both meteorites were confiscated by the Polish Customs Service at the border with Belarus. The first meteorite (called in this paper Terespol-1) is a L/LL6 chondrite, its classification being supported by the equilibrated compositions of olivine and orthopyroxene and the presence of large recrystallized feldspars (< 150 μm). The specimen examined experienced weak shock metamorphism (S3) and moderate weathering (although metal in the inner part of the meteorite seems to be unaffected by oxidization). The other meteorite (called in this paper Terespol-2) is a LL6 chondrite which experienced weak shock metamorphism (S3) and is unaffected by weathering. The Terespol-2 meteorite shares its classification with the Dhofar 1401 chondrite but the lack of data prevents further correlation. Both meteorites have been correlated with known findings from the Meteoritical Bulletin database and an attempt is made to identify their place of origin (fall event). Results indicate that Terespol-1 is most closely related to the Dhofar 1316 chondrite and we suggest that both meteorites at least came from the same parent body.

Słowa kluczowe

EN

ordinary chondrite; type 6 chondrite; shock metamorphism; Dhofar

• Wydawca: Mineralogical Society of Poland
• Czasopismo: Mineralogia
• Rocznik: 2009
• Tom: Vol. 40, iss. 1/4
• Strony: 107--116
• Opis fizyczny: Bibliogr.6 poz., rys., tab.

Twórcy

autor

Owocki K.

• Geological Institute, University of Adam Mickiewicz, ul. Maków Polnych 16, 61-686 Poznań, Poland

autor

Pilski A.

• Museum of Mikołaj Kopernik, ul. Katedralna 8, 14-530 Frombork, Poland

Bibliografia

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• Grossman J.N., & Zipfel J. (2001). The Meteoritical Bulletin No. 85, Meteoritics & Planetary Science, 36, 293–322. Retrieved from the Meteoritical Bulletin Database http://tin.er.usgs.gov/meteor/docs/mb85.pdf
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• Van Schmus W.R., & Wood J.A. (1967). A chemical-petrologic classification for the chondritic meteorites. Geochimica et Cosmochimica Acta, 31, 47–765. DOI: 10.1016/S0016-7037(67)80030-9