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 582 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 Meteoritical Bulletin, no. 110, in preparation (2021)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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