Investigations of HaH 286 eucrite by analytical electron microscopy

• Autorzy: Szurgot M. , Polański K.
• Języki publikacji: EN

Abstrakty

EN

The elemental composition, mineral composition and microstructure of the HaH 286 eucrite found in Lybia in 2000 were studied by analytical electron microscopy. It was established that the mean elemental composition of HaH 286 and atomic and molar ratios: Fe/Mn = 34, Mg/Mg+Fe = 36, Na/Al = 0.066, and Ca/Al = 0.73 are typical of eucrites, and two main meteorite minerals have the mean composition: clinopyroxene En34Fs59Wo7 and plagioclase feldspar An88Ab12. Variations in the composition of pyroxenes and plagioclases are as follows: pyroxene En34-36Fs53-62Wo3-13 and plagioclase: An86-100Ab14-0. Pyroxene is represented by pigeonite and by orthopyroxene. Chromite, ilmenite and silica are minor minerals. The composition, atomic ratios and microstructure indicate that the HaH 286 meteorite is a pyroxene-plagioclase basaltic achondrite, a non-cumulate eucrite with the composition of plagioclase changing between anorthite and bytownite.

Słowa kluczowe

EN

Eucrite; Hammadah al Hamra 286; analytical electron microscopy; meteorite

• Wydawca: Polish Meteorite Society ; Wrocław University of Science and Technology
• Czasopismo: Meteorites
• Rocznik: 2011
• Tom: Vol. 1, No. 1
• Strony: 29--38
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Szurgot M.

autor

Polański K.

• Technical University of Łódź, Center of Mathematics and Physics, Al. Politechniki 11, 90 924 Łódź, Poland

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