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Northwest Africa 11483
Basic information Name: Northwest Africa 11483
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11483
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 15.9 g
Meteoritical Bulletin:  MB 106  (2018)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 665 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 21 Nov 2017
Writeup from MB 106:

Northwest Africa 11483 (NWA 11483)

(Northwest Africa)

Purchased: May 2016

Classification: Ureilite

History: Purchased at the Verona Mineral Fair from a meteorite dealer by Lucian Cojocaru

Petrography: (V. Moggi Cecchi, G.Pratesi, S.Caporali, UniFi) The thin section analyzed displays a protogranular aggregate of olivine and pigeonite, with olivine grains displaying reduced magnesian rims and blebs of Fe-Ni alloys metal. Carbonaceous material is visible at grain boundaries.

Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Olivine cores Fa21.5±0.2, Cr2O3=0.71±0.02 wt%, CaO=0.34±0.02 wt% (N=10), olivine rims Fa10.8±0.1 (N=7), pigeonite Fs12.9±0.3En81.2±1.1Wo5.8±0.2 (N=11); Oxygen isotopes: (I.Franchi, R.Greenwood, OU) δ17O = 3.58 permil, δ18O = 8.45 permil, δ17O = -0.81 permil.

Classification: Ureilite

Specimens: A total of 4.2 g specimen and one thin section is on deposit at MSN-FI. Cojocaru owns the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Verona
Date:P May 2016
Mass (g):15.9
Shock stage:moderate
Weathering grade:medium
Fayalite (mol%):21.5±0.2 (n=10); 10.8±0.1 (n=7)
Ferrosilite (mol%):12.9±0.3 (n=11)
Wollastonite (mol%):5.8±0.2
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSN-FI
Type spec mass (g):4.2
Type spec location:MSN-FI
Main mass:Cojocaru
Comments:Submitted by Vanni Moggi Cecchi
Plots: O isotopes:  
   and collections
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
MSN-FI: Museo di Storia Naturale “La Specola”, Sez. Mineralogia – Sistema Museale dell'Università degli Studi di Firenze Via Giorgio La Pira, 4 – 50121 Firenze, Italy; Website (institutional address; updated 24 Oct 2022)
UniFi: Università degli Studi di Firenze, P.zza S. Marco, 4 - 50121 Firenze, Italy (institutional address; updated 14 Sep 2013)
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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     This is 1 of 9776 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

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