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

NWA 8716 Meteorite Thin Section

NWA 8716 "Jrifiya" Meteorite Thin Section

NWA 8716 “Jrifiya” Meteorite Thin Section

Northwest Africa 8716, a.k.a. Jrifiya, is a brownish-yellow colored shergottite. In cross polarized light, the same brownish-yellow hue prevails and there are numerous phenocrysts which display beautiful zoning patterns.

Original slice (photos courtesy of ebay seller redfoxbat0):

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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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