Category Archives: achondrite

10x/0.25, achondrite, breccia, LMScope, mars, Nikon D810, northwest africa, polarized, scope2, zerene stacker

NWA 11220 Meteorite Thin Section

NWA 11220 Meteorite Thin Section

NWA 11220 Meteorite Thin Section

What a fascinating meteorite! NWA 11220, just like the previously posted NWA 8171, is a Martian Basaltic Breccia. It shares many of the same characteristics and the clasts have similar appearances. In the thin section posted here, readers can explore some eerily “alien” features which seem unique to this particular class of Martian meteorites. The large inclusion on the left side of the thin section contains fascinating little globular specks. Additional clasts contain shapes and features which pose numerous questions, such as what kind of “natural” processes could have formed them? Enjoy!

Information on Martian Basaltic Breccias at Meteorite Studies.

Information on NWA 11220 and YouTube videos of a CT Scan of the meteorite.

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10x/0.25, achondrite, LMScope, Nikon D810, northwest africa, polarized, scope2, zerene stacker

NWA 7835 Meteorite Thin Section

NWA 7835 Meteorite Thin Section

NWA 7835 Meteorite Thin Section

A peculiar ungrouped-achondrite, NWA 7835 contains inclusions which are riddled with what appear to be streams of air bubbles. These streams occur in numerous patterns: parallel, helix, ribbon, single, bifurcating, and enlarging. Look closely, because all of these patterns are visible in this thin section. There are additional pictures of NWA 7835 which zoom in on the microscopic bubbles — taken by John Kashuba and view-able at Meteorite Times.

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10x/0.25, achondrite, LMScope, Nikon D810, northwest africa, polarized, scope2, zerene stacker

NWA 4587 Meteorite Thin Section

NWA 4587 Meteorite Thin Section

NWA 4587 Meteorite Thin Section

The NWA 4587 meteorite makes a colorful polarized thin section. The unique intergranular recrystallized plagioclase texture gives it a spectacular appearance. This is the second example of this meteorite — see here for the first.

NWA 2976 Anomalous Achondrite

NWA 4901 Ungrouped Achondrite

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