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Northwest Africa 11046 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11046 This is an OFFICIAL meteorite name. Abbreviation: NWA 11046 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 182.1 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 104 approved meteorites classified as Eucrite-melt breccia. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 7 Feb 2017 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11046 (NWA 11046) (Northwest Africa) Purchased: 2016 Classification: HED achondrite (Eucrite, melt breccia) History: One stone weighing 182.1 g was found by a meteorite prospector in Morocco. Thomas Webb acquired the sample from a meteorite prospector in 2016. Physical characteristics: Sample is an irregularly shaped fragment that contains a dark brown patina with circular depressions not resembling regmaglypts. The interior surface is dark green and displays a clastic texture composed of lithic and mineral fragments. Petrography: (A. Love, App) Sample is a breccia composed of clasts of cumulate and basaltic eucrites and associated debris of mineral fragments hosted in a quenched melt matrix. Cumulate clasts show incomplete recrystallization textures composed of inverted host Opx with augite exsolution lamellae containing rims of very fine-grained polygonal subgrains of pigeonite. Basalt has a subophitic texture with zoned pigeonite cores with subcalcic augite rims. Accessory minerals are: Si polymorphs, chromite, ilmenite and rare zircon. Geochemistry: (A. Love, App) Low-Ca pyroxene Fs62.0±2.8Wo3.4±1.2 (Fs57.1-65.8Wo1.6-5.2, FeO/MnO=31.5-32.4, N=13); Pigeonite host Fs57.2±5.5Wo11.5±5 (Fs48.1-71.4Wo5.6-22.5, Fe/Mn=28.4-35.6, N=14); high-Ca pyroxene exsolution lamellae Fs29.1±2.0Wo42.6±2.6 (Fs13.6-41.6Wo22.5-44.9, FeO/MnO=28.0-32.4, N=13); plagioclase An90.5±1.5Or0.5±0.2 (An87.2-92.1, N=5). Classification: HED achondrite (eucrite, melt breccia) Specimens: Webb holds the main mass. A polished thin section and 3 slices weighing 20.70 g are on deposit at App. | ||||||||||||||||||||||||||||||
Data from: MB106 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) TWebb: No contact information provided., United States (private address) |
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Catalogs: |
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References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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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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