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Northwest Africa 10412
Basic information Name: Northwest Africa 10412
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10412
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 22.6 g
Meteoritical Bulletin:  MB 104  (2015)  H4-6
Recommended:  H4-6    [explanation]

This is 1 of 103 approved meteorites classified as H4-6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 12 Nov 2015
Writeup from MB 104:

Northwest Africa 10412 (NWA 10412)

(Northwest Africa)

Purchased: 2009

Classification: Ordinary chondrite (H4-6)

History: One stone weighing 22.6 g was found in Morocco in 2009. David Holden acquired the sample from a meteorite prospector in Erfoud 2009.

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

Petrography: Description and classification (A. Love, App): Sample is a breccia and composed of distinct chondrules and fragments, recrystallized chondritic clasts devoid of visible chondrules and shock-darkened fragments. Many chondrules are defined and and have an average diameter of 0.46±0.20 mm (N=66).

Geochemistry: (A. Love, App): Olivine Fa19.5±1.3, N=12; Low Ca pyroxene Fs17.8±1.9Wo1.6±0.2, N=8.

Classification: Based on poorly equilibrated compositions of olivine and pyroxene and textures this is an ordinary chondrite breccia (H4-6, S2, W1).

Specimens: An endcut and one slice weighing 7.34 g, and a polished thin section are currently on deposit at App.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2009
Mass (g):22.6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):19.5±1.3 (N=12)
Ferrosilite (mol%):17.8±1.9 (N=8)
Wollastonite (mol%):1.6±0.2
Classifier:A. Love, App
Type spec mass (g):7.34
Type spec location:App
Main mass:David Holden
Comments:Submitted by Anthony Love
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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