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| Northwest Africa 7278 | |||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 7278 This is an OFFICIAL meteorite name. Abbreviation: NWA 7278 Observed fall: No Year found: 2011 Country: Morocco Mass:  84.9 g | ||||||||||||||||||||||||||
| Classification history: |
This is 1 of 2062 approved meteorites (plus 5 unapproved names) classified as L4. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||
| Comments: | Approved 16 May 2012 | ||||||||||||||||||||||||||
| Writeup |
Writeup from MB 100:
Northwest Africa 7278 (NWA 7278) Morocco Found: 2010 Classification: Ordinary chondrite (L4) History: One partially crusted stone weighing 84.9g was found and purchased in Agadir in 2010. Thomas Webb acquired the sample from a meteorite prospector in 2011. Physical characteristics: Dark blackish-brown matte fusion crust covers ~40% of the stone. The fusion crust covers one side of the wedge-shaped stone and contains several well-developed regmaglypts and displays a few small areas where rollover lipping. Petrography: (Anthony Love, App): Sample displays recrystallized chondritic texture with densely-packed, well-defined (avg. dia. of 0.66 mm) chondrules (POP, PO, RP, BO, PP, poikolitic OP and Al-rich chondrules with relict spinel) and fragments in a slightly recrystallized matrix. A 1.5-3.0 mm thick granulated zone, containing deformed chondrules and elongated metal grains in 25-300 μm clastic debris, crosscuts the sample in an anastomosing pattern. Geochemistry: (A. Love, App) Olivine Fa25.77±4.97, PMD=3.52%, n=15. Low-Ca pyroxene Fs21.72Wo 2.94 (PMD-Fs=3.39, PMD-Wo=54.67, n=14). Plagioclase An28.93, PMD=49.35, n=6. Spinel - Mg# 0.5 Specimens: 16 g, one polished mount and one thin section on deposit at App. Webb holds main mass | ||||||||||||||||||||||||||
| Data from: MB100 Table 1 Line 1705: |
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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) TWebb: No contact information provided., United States (private address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Geography:
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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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