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, achondrite, LMScope, mars, named fall, Nikon D810, polarized, scope2, zerene stacker

Tissint Meteorite Thin Section

Tissint Meteorite Thin Section

Tissint Meteorite Thin Section

The Tissint Meteorite was the first Martian witnessed fall since 1962. It is also special because the meteorite may contain carbon which has a biogenic origin. Under cross polarized light, thin sections of Tissint are a beautiful rainbow kaleidoscope of color in patterns similar to other Martian shergottites.

Photos of the fragment used to create thin section from Mr. Meteorite:

Video:

Tissint meteorite from London’s Natural History Museum

There are plenty of good research articles on the Tissint meteorite, here are just two:

NanoSIMS analysis of organic carbon from the Tissint Martian meteorite: Evidence for the past existence of subsurface organic-bearing fluids on Mars

The Tissint Martian meteorite as evidence for the largest impact excavation

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