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Northwest Africa 11553 | |||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11553 This is an OFFICIAL meteorite name. Abbreviation: NWA 11553 Observed fall: No Year found: 2010 Country: Morocco Mass: 147.2 g | ||||||||||||||||||||||||||
Classification history: |
This is 1 of 396 approved meteorites classified as LL4. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||
Comments: | Approved 18 Dec 2017 | ||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11553 (NWA 11553) Morocco Purchased: 2010 Feb Classification: Ordinary chondrite (LL4) Physical characteristics: Specimen has no visible fusion crust and has a brown-red oxidized outer appearance. Cut surface reveals gray to brown interior with visible chondrules and low abundance of metal. Chondrules are up to 5 mm in diameter. Petrography: Chondrules show a large size variance, ranging from 200 µm to 5 mm, with a mean diameter of 764±412 µm (N=45). Chondrules are well defined in a dark devitrified matrix. Some FeNi metal shows signs of oxidation. Geochemistry: Olivine Fa30.4 as determined by pXRD. Classification: Chondrules are well defined. | ||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011) DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address) UTorG: University of Toronto, Dept. Geology, Earth Sciences Centre, 22 Russell Street Toronto, Ontario, M5S 3B1, Canada (institutional address; updated 31 Jan 2011) |
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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 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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