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Northwest Africa 11443
Basic information Name: Northwest Africa 11443
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11443
Observed fall: No
Year found: 2015
Country: Morocco
Mass:help 900 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 584 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 6 Dec 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11443 (NWA 11443)

Morocco

Purchased: 2015 Oct

Classification: Ureilite

History: Purportedly found near Bouarfa, Morocco. Purchased from a Moroccan dealer in October 2015.

Petrography: (H. Downes, Birkbeck) SEM imaging shows a typical ureilite texture and fabric with inequigranular, abundant reversely zoned olivines and lesser amounts of low-Ca pyroxene. Some metal and significant amounts of carbon present on grain boundaries.

Geochemistry: Mineral compositions and geochemistry: (N. Rai, N. V. Almeida, NHM). All analyses by EPMA. Olivine cores Fa22.7±0.8 (n= 20), 0.40 to 0.46 wt% MnO, 0.52 to 0.58 wt% Cr2O3, 0.27 to 0.31 wt% CaO, <0.01 wt% Ni. Pyroxene Fs17.5±2.9Wo11.9±1.6 (n=8), 0.37 to 0.43 wt% MnO, 0.40 to 1.71 wt% Cr2O3.

Classification: Normal main group ureilite.

Specimens: 94.6 g on deposit at NHM. M. Bilet holds the main mass.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2015 Oct
Mass (g):900
Pieces:1
Class:Ureilite
Fayalite (mol%):22.7±0.8 (N=20)
Ferrosilite (mol%):17.2±2.5 (N=8)
Wollastonite (mol%):11.9±1.6 (N=8)
Classifier:N. Rai, N. V. Almeida, and H. Downes, NHM and Birkbeck
Type spec mass (g):94.6
Type spec location:NHM London
Main mass:Morten Bilet
Comments:Submitted by N. V. Almeida
Institutions
   and collections
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Website (institutional address; updated 9 Dec 2011)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1680 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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