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| Northwest Africa 15621 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 15621 This is an OFFICIAL meteorite name. Abbreviation: NWA 15621 Observed fall: No Year found: 2018 Country: Morocco Mass:  2 kg | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 392 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 7 Jan 2023 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
Northwest Africa 15621 (NWA 15621) Morocco Purchased: February 2018 Classification: Ordinary chondrite (LL4) History: Purchased February 2018 by John Humphries from Blaine Reed at the Tucson Gem and Mineral Show. Physical characteristics: A single wind polished brown stone, saw cut reveals a mottled light gray and tan interior with chondrules and bright metal flecks. Petrography: (D. Dickens, CCMS) Optical and microprobe examination of polished probe mount and BSE images shows well-delineated chondrules (range 360 - 1750 µm) set in a relatively coarse-grained matrix. Accessory phases include unaltered kamacite and troilite. No plagioclase was observed. Geochemistry: (D. Dickens, CCMS and A. S. Bell, CUB) Olivine Fa27.9±0.6, n=7; low-Ca pyroxene Fs25.1±0.8Wo4.7±2.4, n=3. Classification: Ordinary chondrite (LL4) Specimens: Type specimen location Cascadia; Main mass with John Humphries | ||||||||||||||||||||||||||||||
| Data from: MB112 Table 0 Line 0: |
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| Institutions and collections |
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011) CUB: Daniel Ozdín, Mineralogical Museum of Comenius University, Faculty of Natural Sciences, Ilkovicova 6, 842 15 Bratislava, Slovakia (institutional address; updated 2 Dec 2018) Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (private address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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Geography:
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Statistics: This is 1 of 2012 approved meteorites from Morocco (plus 35 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||