NWA 4590 Meteorite Thin Section
Classified as an angrite, NWA 4590 provides a unique sample from the parent body. Analysis of its textural and mineralogical features shows it to be “sub-volcanic”; rather than the more common plutonic or basaltic angrite. Detailed information can be found at Meteorite Studies.
Addition images at Meteorite Thin Section Gallery
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NWA 2999 Meteorite Thin Section
Thin section specimen of NWA 2999 in cross polarized light. Description:
Although most angrites have textures indicative of rapid cooling from melts, NWA 2999 has an overall plutonic, polygonal-granular texture (similar to Angra dos Reis and LEW 86010), but with distinctive large anorthite, spinel and recrystallized olivine porphyroclasts (up to 6 mm across) and 10-20 μm wide, discontinuous anorthite coronas around spinel grains (to our knowledge a feature unique among meteorites). (Source)
Additional resources:
NWA 2999, A Unique Angrite with a large Chondritic Component
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D’Orbigny Meteorite Surface
The D’Orbigny Meteorite provides amazing visuals no matter how the specimen is prepared. Whether looking at a thin section or gazing at its surface, the observer will be amazed at the natural beauty of this ancient fragment of the Solar System. The panorama photomicrograph displayed here was taken with a small piece of the D’Orbigny meteorite under cross polarized reflected light. For comparison, see these thin section photomicrographs: D’Orbigny 1 and D’Orbigny 2.
Link to pictures of the main mass.
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