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Northwest Africa 10487
Basic information Name: Northwest Africa 10487
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10487
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 88.8 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  H5
Recommended:  H5    [explanation]

This is 1 of 11568 approved meteorites (plus 23 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 8 Jan 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10487 (NWA 10487)

(Northwest Africa)

Purchased: 2010

Classification: Ordinary chondrite (H5)

History: 1 stone weighing 88.8 g was found in Morocco in 2010. David Holden acquired the sample from a meteorite prospector in Erfoud, 2010.

Physical characteristics: The stone is dark brown and has a rounded-irregular shape and is covered by a weathered patina. The stone is friable and the cut face of the interior of the stone is orange in color and displays small chondrules, chondrule fragments, and both fresh and weathered flakes of metal.

Petrography: Description and classification (A. Love, App): Sample is composed of distinct chondrules and fragments set in a recrystallized matrix. Chondrules have an average diameter of 480 μm. Taken in concert with irregular fractures and sharp optical extinction, the occurrence of plagioclase-chromite assemblages and strongly polycrystalline troilite suggest sample has been annealed during a subsequent an impact event with a maximum prior shock level of S3.

Geochemistry: (A.Love, App) Olivine Fa18.6±0.4, N=8; low-Ca pyroxene Fs17.1±0.2Wo1.8±0.1, N=6

Classification: Based on mineral textures and compositions, this is an ordinary chondrite H5, S3, W2.

Specimens: An endcut and two slices weighing 18.8 g, a polished mount and a polished thin section are currently on deposit at App.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2010
Mass (g):88.8
Pieces:1
Class:H5
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):18.6±0.4, N=8
Ferrosilite (mol%):17.1±0.2, N=6
Wollastonite (mol%):1.8±0.1
Classifier:A. Love, App
Type spec mass (g):18.8
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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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