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| Northwest Africa 11517 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 11517 This is an OFFICIAL meteorite name. Abbreviation: NWA 11517 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass:  88 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 340 approved meteorites classified as Lunar (feldsp. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 24 Feb 2018 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 107:
Northwest Africa 11517 (NWA 11517) Northwest Africa Purchased: 2017 Classification: Lunar meteorite (feldspathic breccia) History: Four individuals weighing a total of 88 g were found near Tindouf, Algeria. John Sinclair purchased the stones from a Moroccan meteorite hunter at the Sainte Marie Aux Mines mineral show in France during June of 2017. Physical characteristics: Sample is irregular-ovoid shaped and lacks fusion crust. The exterior surface is weathered and light orangish-gray in color. The stone shows brecciated texture composed of dominant light-colored clasts in a dark grey matrix. FeNi grains are present in several slices. Pits from weathering of clasts and vesicles contain orange caliche. Petrography: Description and classification (A. Love, App) Sample is a polymict breccia composed of 0.5-3 mm irregularly shaped lithic and mineral clasts set within a micro-vesiclar, melt matrix. Clasts are composed of poikilitic gabbro, vitrophyric, anorthosite, crystalline impact melt, and basaltic lithologies. Minerals clasts include olivine, exsolved Ca-rich and Ca-poor pyroxene, baddeleyite, ulvospinel, ilmenite, chromite, FeS, kamacite, taenite, Si-polymorph. Geochemistry: (A. Love, App) Olivine (Fa18.65-53.01, FeO/MnO=83.29-109.49, N=12), Opx (Fs16.43-42.54 Wo2.92-4.47, FeO/MnO=53.16-60.73, N=5), pigeonite (Fs40.64-67.00 Wo5.14-11.16, FeO/MnO=54.93-67.00, N=8); augite (Fs17.44-36.61 Wo19.71-43.48, N=8); pyroxeferroite Fs70.28 Wo5.8, FeO/MnO=60.5, N=1); plagioclase An95.55-98.72 Or0.00-0.27, N=15). Classification: Lunar (feldspathic breccia). Textures and mineral compositions indicate this sample is a feldspathic breccia. FeO/MnO ratios from olivine and pyroxene and An-content of plagioclase suggest this sample is a lunar feldspathic breccia. Specimens: J. Sinclair holds the main masses. An individual and a slice weighing 17.6 g and one polished thin section are on deposit at App. | ||||||||||||||||||||||||||||||||
| Data from: MB107 Table 0 Line 0: |
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| Institutions and collections |
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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| Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 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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