Meteoritical Bulletin: Entry for Northwest Africa 14227

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Northwest Africa 14227

Basic information

Name: Northwest Africa 14227
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14227
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 40 g

Classification
history:

Recommended:

Ureilite [explanation]

This is 1 of 617 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 18 Sep 2021

Writeup

Writeup from MB 110:

Northwest Africa 14227 (NWA 14227)

(Northwest Africa)

Purchased: 2021 Jan

Classification: Ureilite

History: The meteorite was purchased from a meteorite dealer in Ouarzazate, Morocco.

Physical characteristics: Brownish rock without fusion crust.

Petrography: The meteorite shows a granular texture of olivine and pigeonite grains up to 1.0 mm in sizes with some triple junctions. Olivine and pyroxene have characteristic reduced Mg-rich rims associated with FeNi-metal or graphite. The meteorite contains flaky graphite and abundant iron oxide veins.

Geochemistry: reduced rims in olivine: Fa_2.5-5.6; olivine contains 0.56±0.03 wt% Cr₂O₃ and 0.32±0.02 wt% CaO; reduced rims in orthopyroxene: Fs_1.1-1.3Wo_0.6-0.7; orthopyroxene contains 1.05±0.02 wt% Cr₂O₃ and 1.14±0.03 wt% Al₂O₃

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Ouarzazate, Morocco
Date:	P 2021 Jan
Mass (g):	40
Pieces:	1
Class:	Ureilite
Shock stage:	low
Weathering grade:	moderate
Fayalite (mol%):	12.5±0.1 (n=7)
Ferrosilite (mol%):	14.3±0.1 (n=5)
Wollastonite (mol%):	6.7±0.1 (n=5)
Classifier:	A. Greshake, MNB
Type spec mass (g):	11.5
Type spec location:	MNB
Main mass:	Noreddine Azelmat
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

Catalogs:

References:

Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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