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Northwest Africa 11221
Basic information Name: Northwest Africa 11221
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11221
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 61 g
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 141 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 May 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11221 (NWA 11221)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was bought in 2016 from a meteorite dealer in Erfoud, Morocco.

Physical characteristics: Dark-grayish individual, partly covered with fusion crust.

Petrography: The meteorite is a fragmental breccia composed of angular to subrounded basaltic clasts dominated by exsolved pyroxene and lath shaped calcic plagioclase, dark melt clasts and fine-grained clastic matrix. Minor phases include silica, ilmenite, FeS and metallic iron.

Geochemistry: low-Ca pyroxene: Fs51.8±3.2Wo3.5±0.8 (Fs48.3-58.9Wo2.2-4.9, n=12, FeO/MnO=30-34); Ca-pyroxene: Fs33.3±5.7Wo33.7±5.5 (Fs26.8-41.7Wo24.1-40.3, n=9, FeO/MnO=29-32); calcic plagioclase: An89.9±1.4 (An87.3-92.0, n=15)

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2016
Mass (g):61
Pieces:1
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):51.8; 33.3
Wollastonite (mol%):3.5; 33.7
Classifier:A. Greshake, MNB
Type spec mass (g):13.4
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 106, in preparation (2017)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 5838 approved meteorites from (Northwest Africa) (plus 2066 unapproved names)

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