page_title: Nakhlite
section_title: Samples
hierarchical_section_title: Nakhlite / Samples
caption_attribution_description: Lafayette (stone) meteorite. Martian Calcium-rich Pyroxenite. Found in 1931, Indiana.
context_page_description: Nakhlites are a group of Martian meteorites, named after the first one, Nakhla meteorite.
  Nakhlites are igneous rocks that are rich in augite and were formed from basaltic magma about 1.3 billion years ago. They contain augite and olivine crystals. Their crystallization ages, compared to a crater count chronology of different regions on Mars, suggest the nakhlites formed on the large volcanic construct of either Tharsis, Elysium, or Syrtis Major Planum.
context_section_description: The following samples of nakhlites are known.
  Nakhla meteorite (about 40 samples, total estimated weight 10 kilograms (22 lb)), vicinity of Nakhla, Abu Hommos district, Alexandria Governorate, Egypt, 1911
  Governador Valadares meteorite 
  Lafayette meteorite, 800g, before 1931 
  NWA817, 104g, Morocco, 2000 
  NWA998, 456g, Morocco, 2001 
  Y000593 (Yamato 593), 13.7 kilograms (30 lb)
  Y000749, 1.28 kilograms (2.8 lb) 
  Y000802, 22g 
  MIL 03346  Miller Range, Antarctica
  MIL 090030, MIL 090032, and MIL 090136, Miller Range, Antarctica
caption: Lafayette
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