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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4x/0.25, breccia, LMScope, lunar, Nikon D810, northwest africa, polarized, scope2, zerene stacker

NWA 10203 Meteorite Thin Section

NWA 10203 Meteorite Thin Section

NWA 10203 Meteorite Thin Section

This thin section of NWA 10203 shows a wide range of fascinating features. As described on the Meteoritical Bulletin, this lunar breccia contains four lithologies:

1. Unbrecciated olivine gabbro with zoned clinopyroxene.
2. Fragmental anorthositic gabbro breccia.
3. Fragmental gabbroic breccia with approximately equal proportions of plagioclase, pyroxene and olivine.
4. Shock melt veins and pools.

There appears to be a least two of these lithologies in this specimen.

More information on the meteorite and its pairings: Northwest Africa 10149 clan.

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