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Northwest Africa 11846
Basic information Name: Northwest Africa 11846
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11846
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 754 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 138 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 4 Jul 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11846 (NWA 11846)

(Northwest Africa)

Purchased: 2018 Jan

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased in New York City by Darryl Pitt in January 2018 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Ophitic texture. Aggregate of exsolved pigeonite and calcic plagioclase with accessory silica polymorph, Ti-chromite, ilmenite and troilite.

Geochemistry: Orthopyroxene host (Fs62.2-62.3Wo2.2-1.9,FeO/MnO = 31-32, N = 2), clinopyroxene exsolution lamellae (Fs27.3-27.4Wo43.5-43.3,FeO/MnO = 28-31, N = 2), plagioclase (An88.4-89.7Or0.5-0.6, N = 2).

Classification: Eucrite (unbrecciated).

Specimens: 20.6 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:New York City
Date:P 2018 Jan
Mass (g):754
Pieces:1
Class:Eucrite-unbr
Shock stage:low
Weathering grade:low
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.6
Type spec location:UWB
Main mass:D. Pitt
Comments:Work name MVCH 330; submitted by A. Irving
Institutions
   and collections		 UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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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