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Northwest Africa 7278
Basic information Name: Northwest Africa 7278
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7278
Observed fall: No
Year found: 2011
Country: Morocco
Mass:help 84.9 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  L4
Recommended:  L4    [explanation]

This is 1 of 1646 approved meteorites (plus 4 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
Writeuphelp
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 AppWebb holds main mass

Data from:
  MB100
  Table 1
  Line 1705:
Place of purchase:Agadir
Date:2010
Mass (g):84.9
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):25.77+/- 4.97
Classifier:A. Love, App
Type spec mass (g):17
Type spec location:App
Main mass:TWebb
Comments:Submitted by Anthony Love
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1460 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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