- Tytuł:
-
Wyniki badań składu pierwiastkowego i mineralnego eukrytu NWA 4039 za pomocą analitycznej mikroskopii elektronowej
Results of investigation of elemental and mineral composition of NWA 4039 eucrite by analytical electron microscopy - Autorzy:
-
Szurgot, Marian
Polański, Krzysztof - Powiązania:
- https://bibliotekanauki.pl/articles/1032944.pdf
- Data publikacji:
- 2012
- Wydawca:
- Polskie Towarzystwo Meteorytowe
- Tematy:
-
HED meteorites
analytical electron microscopy
extraterrestrial matter
meteorites - Opis:
- New NWA 4039 eucrite found in 2005 in Morocco was investigated by scanning electron microscopy. Elemental composition and mineral composition have been analyzed. The composition of feldspars and plagioclases has been determined, and the presence of ilmenite, chromite, troilite and silica confirmed. It was established that the mean elemental composition of NWA 4039 and atomic and molar ratios: Fe/Mn = 31, Na/Al = 0.045, Ca/Al = 0.66 and Mg/Mg+Fe = 31 are typical of eucrites, and two main meteorite minerals have the mean composition: pyroxene En30Fs66Wo4 and plagioclase feldspar An91Ab9. Presence of clinopyroxene pigeonite En37Fs55Wo8 and plagioclase An90Ab10 and An92Ab8 has been revealed. Mean chemical composition, as well as TiO2 content (0.59 wt%) vs. FeO/MgO ratio (4.11) indicate that NWA 4039 is a non cumulate, basaltic eucrite.
- Źródło:
-
Acta Societatis Metheoriticae Polonorum; 2012, 3; 126-139
2080-5497 - Pojawia się w:
- Acta Societatis Metheoriticae Polonorum
- Dostawca treści:
- Biblioteka Nauki