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| Northwest Africa 8399 | |||||||||||||||||||
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| Basic information | Name: Northwest Africa 8399 This is an OFFICIAL meteorite name. Abbreviation: NWA 8399 Observed fall: No Year found: 2014 Country: Western Sahara Mass:  18.5 g | ||||||||||||||||||
| Classification history: |
This is 1 of 660 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||
| Comments: | Approved 29 May 2014 | ||||||||||||||||||
| Writeup |
Writeup from MB 103:
Northwest Africa 8399 (NWA 8399) Western Sahara Found: 2014 Classification: Ureilite History: Found by a meteorite hunter on a 2014 Jan-Feb expedition in Western Sahara, and subsequently purchased by Darryl Pitt. Physical characteristics: Single stone with dark weathered fusion crust. Saw cut reveals polycrystalline texture of light and dark grains. Petrography: (C. Agee, UNM) Examination of a polished mount shows approximately 75% olivine, 20% pyroxene, texturally equilibrated with triple junctions, ubiquitous Fe-Ni metal and troilite blebs, olivines zoned with forsteritic rims. Diamonds occur throughout, often forming elongate domains up to 1000 μm. Geochemistry: (C. Agee and N. Muttik, UNM) Olivine cores Fa23.6±1.7, Fe/Mn=43±5, Cr2O3=0.48±0.05, n=6; olivine rims Fa6.9±2.9, Fe/Mn=10±2, Cr2O3=0.69±0.02 wt%, n=2; low-Ca pyroxene Fs18.4±2.2Wo2.9±1.3, Fe/Mn=29±4, Cr2O3=1.39±0.29 wt%, n=8; chromium sulfide detected. Classification: Achondrite (ureilite). Specimens: 3.9 g including a probe mount on deposit at UNM, DPitt holds the main mass. | ||||||||||||||||||
| Data from: MB103 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) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:
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Statistics: This is 1 of 280 approved meteorites from Western Sahara (plus 20 unapproved names) | ||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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| Revision history: |
This lists important revisions made to data for this record.
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