Thin section of the NWA 6309 meteorite (eucrite)
The NWA 6309 meteorite (eucrite)
The NWA 6309 is a polimictic eucrite, meaning it is an achondrite from the HED group
Composition as described in the Meteoritical Bulletin:
Petrography: (A. Greshake, MNB): The grayish-whitish speckled rock is dominated by a coarse-grained basaltic lithology composed of pyroxene and mostly lath-shaped calcic plagioclase. Pyroxenes are mostly exsolved and frequently show cloudy appearance. Rare clasts are dark melt clasts. Minor minerals include chromite and pyrrhotite.
Geochemistry:
low-Ca pyroxene: Fs56.7-57.4Wo5.9-6.3
Ca-pyroxene Fs28-35.4Wo32.7-42.1
calcic plagioclase An90.1-91.8
This thin section is owned by Szymon Kozłowski and was scanned on January 21, 2026, using a Keyence VHX-7000 polarizing microscope in both plane- and cross-polarized modes at the Department of Geochemistry, Mineralogy and Petrology, University of Warsaw, Poland.
Slice
Full thin slice
Zoom #1
Zoom #2
Zoom #2 with labels
