Meteoritical Bulletin: Entry for Northwest Africa 15240

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Northwest Africa 15240

Basic information

Name: Northwest Africa 15240
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15240
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 230 g

Classification
history:

Recommended:

R3 [explanation]

This is 1 of 72 approved meteorites classified as R3. [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)

Comments:

Approved 14 Sep 2022

Writeup

Writeup from MB 111:

Northwest Africa 15240 (NWA 15240)

(Northwest Africa)

Purchased: 2022 Mar

Classification: Rumuruti chondrite (R3)

History: Purchased by Ziyao Wang in March 2022 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Relatively small, unequilibrated chondrules (apparent diameter 480±190 µm, N = 24) and rare small, very fine grained CAI are set in a very fine grained matrix (~20 vol.%, almost opaque in thin section) containing extensively altered Fe and Fe-Ni sulfides, rare taenite and very rare altered kamacite, plus some secondary barite and calcite.

Geochemistry: Olivine (Fa_28.9±18.8, range Fa_0.9-44.9, N = 6), low-Ca pyroxene (Fs_13.8±10.2Wo_0.7±0.6, range Fs_2.1-20.9Wo_0.2-1.3, N = 3), pigeonite (Fs_25.2Wo_12.7), subcalcic augite (Fs_22.8Wo_29.3), augite (Fs_10.3Wo_41.2).

Classification: R3 chondrite.

Specimens: 26 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2022 Mar
Mass (g):	230
Pieces:	1
Class:	R3
Shock stage:	low
Weathering grade:	moderate
Fayalite (mol%):	28.9±18.8
Ferrosilite (mol%):	13.8±10.2
Wollastonite (mol%):	0.7±0.6
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	26.0
Type spec location:	UWB
Main mass:	WangZ
Comments:	Work name WZY-102; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 111, in preparation (2022)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Ziyao Wang

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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