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Northwest Africa 8740
Basic information Name: Northwest Africa 8740
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8740
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 292 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  L6
Recommended:  L6    [explanation]

This is 1 of 12780 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 24 Jan 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8740 (NWA 8740)

(Northwest Africa)

Purchased: 2014

Classification: Ordinary chondrite (L6)

History: One flattened stone weighing 292 g was found in Morocco in 2014. David Holden acquired the sample from a meteorite prospector in Erfoud, 2014.

Physical characteristics: The stone is dark brown and has a flattened rectangular shape displaying many shallow regmagpylts. There is no relict fusion crust remaining on the exterior. The cut face of the interior of the stone is mottled orangish-brown and shows weathered flakes of metal.

Petrography: (A. Love, App) Sample displays recrystallized chondritic texture crosscut by shock veins and fractures containing FeOH weathering products. Chondrules are not defined.

Geochemistry: (A.Love, ) Olivine Fa26.1±0.4, N=14; Low Ca pyroxene Fs21.7±0.5Wo1.9±0.3, N=12

Classification: Ordinary chondrite (L6, S4, W3)

Specimens: Two slices weighing 22.4 g, and a polished thin section are currently on deposit at App.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2014
Mass (g):292
Pieces:1
Class:L6
Shock stage:S4
Weathering grade:W3
Fayalite (mol%):26.1±0.4 (N=14)
Ferrosilite (mol%):21.7±0.5 (N=12)
Wollastonite (mol%):1.9±0.3
Classifier:A. Love, App
Type spec mass (g):22.4
Type spec location:App
Main mass:David Holden
Finder:Anonymous
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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