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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:help 230 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  R3
Recommended:  R3    [explanation]

This is 1 of 74 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 14 Sep 2022
Writeuphelp
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 (Fa28.9±18.8, range Fa0.9-44.9, N = 6), low-Ca pyroxene (Fs13.8±10.2Wo0.7±0.6, range Fs2.1-20.9Wo0.2-1.3, N = 3), pigeonite (Fs25.2Wo12.7), subcalcic augite (Fs22.8Wo29.3), augite (Fs10.3Wo41.2).

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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Photos:
CreditPhotos
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 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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