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Northwest Africa 10486 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10486 This is an OFFICIAL meteorite name. Abbreviation: NWA 10486 Observed fall: No Year found: 2010 Country: (Northwest Africa) Mass: 42.5 g | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 86 approved meteorites classified as H3-5. [show all] Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||
Comments: | Approved 24 Jan 2016 | ||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 105:
Northwest Africa 10486 (NWA 10486) (Northwest Africa) Purchased: 2010 Classification: Ordinary chondrite (H3-5) History: One stone weighing 42.5 g was found in Morocco in 2010. David Holden acquired the sample from a meteorite prospector in Erfoud 2010. Physical characteristics: The stone is dark brown and has a rounded-irregular shape. The stone is covered by a weathered patina. The cut face of the interior of the stone is orange in color and displays small chondrules, chondrule fragments, and unweathered flakes of metal. Petrography: Description and classification (A. Love, App): Sample is a breccia composed of recrystallized and shock-darkened clasts set within a host of well-defined chondrules and fragments included in a fragmental matrix of clastic debris. Host chondrules are well-defined, have turbid mesostasis and have an average diameter of 420 μm. The recrystallized clast is composed of indistinct chondrules and chondrule fragments set within a yellow-stained, recrystallized matrix. The shocked clast contains rounded and flattened chondrules and is crosscut by a series of subparallel fractures. Geochemistry: (A. Love, App) Host: Olivine Fa14.2±9.1 (Fa0.7-27.7) N=17; Low Ca pyroxene Fs12.1±5.2Wo1.3±0.6 (Fs4.2-17.7Wo0.3-2.5), N=13, Equilibrated clasts: Olivine Fa17.9±0.5, N=2; low-Ca Pyroxene Fs 16.5±0.1Wo 1.7±0.1, N=2. Classification: Based on textures and mineral compositions, sample is an H3-5, S3, W2. Based on compositions of Type I chondrules and CL signature of chondrule mesostasis (Huss et al., 2006), unequilibrated host falls between petrologic type 3.5-3.7. Specimens: An endcut and two slices weighing 8.54 g, and a polished thin section are currently on deposit at App. | ||||||||||||||||||||||||||||||||
Bibliography: |
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Data from: MB105 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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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