Meteoritical Bulletin: Entry for Northwest Africa 11327

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Northwest Africa 11327

Basic information

Name: Northwest Africa 11327
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11327
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 4.54 kg

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	R3
Recommended:			R3 [explanation]

This is 1 of 43 approved meteorites classified as R3. [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)

Comments:

Approved 14 Jul 2017

Writeup

Writeup from MB 106:

Northwest Africa 11327 (NWA 11327)

(Northwest Africa)

Purchased: 2017 Apr

Classification: Rumuruti chondrite (R3)

History: Acquired by a Moroccan dealer in April 2017 and subsequently purchased by Ke Zuokai.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia consisting of unequilibrated type-3 chondrite clasts plus separate well-formed chondrules (apparent diameter 450±400 μm, N = 12) in an orange-brown, stained matrix (~20 vol.%). Some angular enstatite clasts are present. Accessory minerals include pentlandite, iron sulfide, sodic plagioclase, Ti-bearing chromite and merrillite; metal is absent.

Geochemistry: Olivine (Fa_3.7-47.7, mean Fa_33.4±20.1, N = 5), orthopyroxene (Fs_2.4-11.6Wo_0.8-0.5, N = 3), subcalcic augite (Fs_14.0Wo_30.0), augite (Fs_10.8Wo_45.8).

Classification: R3 chondrite.

Specimens: 20.6 g including one polished thin section at UWB; remainder with Mr. Ke Zuokai.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2017 Apr
Mass (g):	4535
Pieces:	4
Class:	R3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	3.7-47.7
Ferrosilite (mol%):	2.4-11.6
Wollastonite (mol%):	0.8-0.5
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	20.6
Type spec location:	UWB
Main mass:	K. Zuokai
Comments:	Work name AH17-31; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

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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Photos:

Credit	Photos
Public domain photographs:
A. Irving

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7752 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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