NWA 5435, Brachinite Achondrite, Micromount

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The NWA 5435 meteorite was recovered as a single small stone out of the Saharan Desert of Morocco in 2009. It was analyzed by Dr. Ted Bunch at NAU and classified as a primitive achondrite brachinite. Brachinites are an odd class of meteorite that are composed almost entirely of olivine and originate from an unknown parent body asteroid. By weight, they are much more rare than Lunar or Martian meteorites and only 54 have been classified to date.

The specimen being offered here is a micromount fragment.

Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing a small fragment like the one shown. Your purchase will include an ID label and gemjar for safe storage.

From the Meteoritical Bulletin entry on NWA 5435 :

Northwest Africa 5435 (NWA 5435)


Found: 2009

Classification: Primitive achondrite (Brachinite)

Physical characteristics: Desert ablated. Little fusion crust.

Petrography: Medium grained, equigranular with moderately developed flow texture. Mineral modes (in vol. %): olivine, 90; diopside, 4; plagioclase, 3; FeS+metal+merrilite, 3.

Geochemistry: Olivine, Fa32.7, Fe/Mn=77; diopside, Fs10.5Wo42.6; plagioclase, An29Or2.3

Classification: Achondrite (brachinite)