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Northwest Africa 11355 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11355 This is an OFFICIAL meteorite name. Abbreviation: NWA 11355 Observed fall: No Year found: 2017 Country: Morocco Mass: 5 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 12727 approved meteorites (plus 11 unapproved names) classified as L6. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 28 Jun 2017 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11355 (NWA 11355) Morocco Purchased: Feb. 2017 Classification: Ordinary chondrite (L6) History: Purchased by Ke Zuokai in Feb. 2017 from a Moroccan dealer. Physical characteristics: The meteorite has a yellow weathered surface. Petrography: The section shows chondrules (0.4-1 mm, one large chondrule up to 2.6 mm) with vague boundaries. The matrix experienced extensive recrystallization (30 to 300 μm) with a few regions in the matrix show triple junctions. Plagioclase grains size up to ~80 μm. Chromite, troilite, metal and phosphate are also present. Fractures are widespread in this thin section. Shock melt veins are present. Geochemistry: Silicates are equilibrated. Olivine Fa22.8-25.1 (Fa23.8±0.7, PMD=2.2%, n=18); low-Ca pyroxene Fs19.2-21.6Wo0-1.5 (Fs20.0±0.8Wo1.0±0.4, Fs PMD=3.0%, n=15); minor Ca-rich pyroxene Fs6.9-18.5Wo37.9-44.3; plagioclase Ab79.8-86.9Or4.0-10.4 (Ab83.5±1.9Or6.3±1.7, n=14). Classification: L6 classification based on homogenized composition, recrystallizied matrix and regional triple junctions. | ||||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 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 2068 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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