Sahara 99555 Meteorite Thin Section
Sahara 99555 Meteorite thin section in cross polarized light. This was purchased from Luc Labenne; he mentioned that this was his last thin section specimen of SAH 99555 and that it suffered a horizontal fracture near the bottom. Despite the crack, this angrite classified meteorite produces spectacular visuals.
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Isheyevo Meteorite Thin Section
The Isheyevo Meteorite is categorized as a CH/CBb Bencubbin-like type meteorite. It contains FeNi grains, C, POP, rare BO chondrules, chondrule fragments, CAIs, and matrix lumps. The polarized image seen here shows a central elongated structure with polarized features, while the remaining areas show vast areas of black matrix material. It reminds one of the Milky Way winding its way through the night sky.
Pictures of the meteorite mass.
Google maps seems to show a spelling of Isheevo, or in Russian: Ишеево
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Sahara 99544
Thin section specimen of Sahara 99544 Meteorite seen in polarized light with a 1/4 wave retarder. Being a type CO3, there is an abundance of small diameter chondrules and olivine aggregates. In Norton’s The Cambridge Encyclopedia of Meteorites CO type chondrites are compared with CV type chondrites. Compare SAH 99544 with Allende, which is type CV. CO chondrules are on average 15% the size of CV chondrules. CO type specimens contain about half the volume percentage of CAIs when compared to the CV class.
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