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Northwest Africa 11521 | |||||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11521 This is an OFFICIAL meteorite name. Abbreviation: NWA 11521 Observed fall: No Year found: 2017 Country: Morocco Mass: 50 g | ||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||||||
Comments: | Approved 2 Dec 2018 | ||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11521 (NWA 11521) Moroco Purchased: 2017 Classification: Carbonaceous chondrite (CO3) History: A single piece with a mass of 50 g was bought in 2017 from a Moroccan meteorite dealer in Ensisheim, France. Physical characteristics: Fresh-looking individual with black (fusion) crust. Petrography: The meteorite shows a chondritic texture of abundant small chondrules, metals, sulfides, CAIs, and mineral fragments embedded into a fine-grained greyish and porous matrix. Chondrules are dominantly porphyritic and typically 0.1-0.2 mm in diameter. Sulfides and FeNi metal are fresh and present in matrix and chondrules. Geochemistry: Mineral compositions and geochemistry: Olivine (mean: Fa 18.7±14.6, range: Fa0.4-38.4, n=33), low-Ca pyroxene (mean Fs4.8±3.4Wo2.7±2.2, range: Fs0.6-11.8Wo0.4-7.4, n=24) Classification: The textural observations suggest a CO3 classification of this rock. The olivines show undulatory extinction. Thus, the rock is of shock stage S2. The sample is only slightly weathered. | ||||||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Photos: |
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Geography: |
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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