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Northwest Africa 14997
Basic information Name: Northwest Africa 14997
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14997
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 76 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  R3
Recommended:  R3    [explanation]

This is 1 of 77 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 20 Jun 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14997 (NWA 14997)

(Northwest Africa)

Purchased: 2021

Classification: Rumuruti chondrite (R3)

History: Purchased by Shun-Chung Yang in 2021 from a dealer in Tindouf, Algeria.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed, separated chondrules containing devitrified glass (apparent diameter 510±310 µm, N = 24) together with some Type 3 lithic chondrite clasts are set in a fine grained matrix (~45 vol.%, deep orange in thin section) containing altered pentlandite (much replaced by Fe oxides), chromite and sodic plagioclase. Metal is absent.

Geochemistry: Olivine (Fa33.8±12.2, range Fa5.1-40.6, N = 9), low-Ca pyroxene (Fs21.9±3.9Wo0.8±0.6, range Fs17.8-27.2Wo0.1-1.6, N = 5), augite (Fs11.7±0.5Wo44.0±0.7, range Fs11.1-12.0Wo43.2-44.7, N = 4), plagioclase (Ab87.0An10.7Or2.3).

Classification: R3 chondrite.

Specimens: 17.7 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Tindouf
Date:P 2021
Mass (g):76
Pieces:1
Class:R3
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):33.8±12.2
Ferrosilite (mol%):21.9±3.9
Wollastonite (mol%):0.8±0.6
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):17.7
Type spec location:UWB
Main mass:S.-C. Yang
Comments:Work name SCY-56; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)
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. ?
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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