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Northwest Africa 7333 | |||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7333 This is an OFFICIAL meteorite name. Abbreviation: NWA 7333 Observed fall: No Year found: 2011 Country: Morocco Mass: ![]() | ||||||||||||||||||||||||||
Classification history: |
This is 1 of 604 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||
Comments: | Approved 23 Aug 2012 | ||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 101:
Northwest Africa 7333 (NWA 7333) Morocco Purchased: 2011 Classification: Ureilite History: Purchased by Matt Morgan in Morocco, 2011. Physical characteristics: Single stone with a dark brown, coarse granular exterior. Saw cut reveals a mosaic of black and brown grains and very fine veins of oxidized metal and graphite, some clasts up to several millimeters. Petrography: (C. Agee, UNM) This meteorite consists of approximately 65% olivine and 30% pigeonite. Numerous Fe-metal veins occupy grain boundaries. Most of the veins have been oxidized by desert weathering. The metal veins are commonly haloed by tiny metal blebs grading into adjacent olivine and pyroxene crystals. Graphite is ubiquitous and exceptionally well preserved as elongate lenses up to 1 mm and along olivine and pyroxene grain boundaries. Minor sulfide present. Geochemistry: (C. Agee and M. Spilde, UNM, by EPMA). Olivine Fa18.2±5.3, Fe/Mn=39±13, Cr2O3=0.56±0.21 wt%, n=13; pigeonite Fs11.3±3.9Wo11.2±7.5, Fe/Mn=20±10, Cr2O3=1.03±0.22 wt%, n=10; enstatite Fs0.9Wo1.0, n=1. Classification: Achondrite (Ureilite) Specimens: 18 g including a probe mount on deposit at UNM, Calvin Shipbaugh holds the main mass. | ||||||||||||||||||||||||||
Data from: MB101 Table 0 Line 0: |
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Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography:![]() |
Statistics: This is 1 of 1837 approved meteorites from Morocco (plus 24 unapproved names) (plus 1 impact crater) |