Meteoritical Bulletin: Entry for Northwest Africa 11483

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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: 15.9 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 629 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 21 Nov 2017

Writeup

help

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 Fa_21.5±0.2, Cr₂O₃=0.71±0.02 wt%, CaO=0.34±0.02 wt% (N=10), olivine rims Fa_10.8±0.1(N=7), pigeonite Fs_12.9±0.3En_81.2±1.1Wo_5.8±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:
  MB106
  Table 0
  Line 0:

Place of purchase:	Verona
Date:	P May 2016
Mass (g):	15.9
Pieces:	1
Class:	Ureilite
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:

Institutions
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)

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.

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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