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Northwest Africa 8182 | |||||||||||||||||||
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Basic information | Name: Northwest Africa 8182 This is an OFFICIAL meteorite name. Abbreviation: NWA 8182 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: 15.6 g | ||||||||||||||||||
Classification history: |
This is 1 of 336 approved meteorites classified as Lunar (feldsp. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||
Comments: | Approved 30 Jan 2014 | ||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 8182 (NWA 8182) (Northwest Africa) Purchased: 2013 Classification: Lunar meteorite (feldspathic breccia) History: Purchased by Matt Morgan in 2013, reportedly found in Algeria. Physical characteristics: Single stone, complete, dome shaped, remnants of brown-black fusion crust. Saw cut reveals a range of clast and fragmental feldspar sizes set in dark fine grained matrix, dark gray shock melt veins throughout. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows two main types of breccia: 1) cataclastic breccia with densely packed olivine, pyroxene and plagioclase fragments and abundant vesiculated shock melt veins, 2) feldspathic breccia with primarily fragmental plagioclase set in a very fine-grained matrix. Chromite, ilmenite, zircon, phosphate, silica, and sulfide observed. Geochemistry: C. Agee and N. Muttik, UNM). Olivines are fairly uniformly Mg-rich, olivine Fa36.5±7.1, Fe/Mn=99±10, n=31. Some plagioclase has relatively high albite content, An93.4±2.2Ab6.2±1.9Or0.4±0.3, range An89.1-96.3, n=12. This specimen appears to have three distinct clinopyroxene populations, likely representing at least three lithologic types: 1) Mg-rich clinopyroxene, Fs32.8±12.3Wo18.6±8.0, Fe/Mn=57±9, n=17; 2) Fe-rich clinopyroxene, Fs51.0±7.9Wo24.3±6.7, Fe/Mn=72±5, n=15; 3) hedenberite, Fs53.1Wo41.6, Fe/Mn=89 + Fs-rich pigeonite, Fs81.0Wo13.0, Fe/Mn=63. Classification: Achondrite (lunar meteorite). Feldspathic breccia. Specimens: A total of 3.5 g, including a probe mount, is on deposit at UNM, MtMorgan 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) MtMorgan: Matt Morgan, Mile High Meteorites, P.O. Box 151293, Lakewood, CO 80215-9293, 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: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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