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Northwest Africa 15121
Basic information Name: Northwest Africa 15121
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15121
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 210 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 19 Aug 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15121 (NWA 15121)

(Northwest Africa)

Purchased: 2022

Classification: Rumuruti chondrite (R3)

History: Purchased by Shun-Chung Yang and Juan Chen in 2022 from a dealer in Tindouf, Algeria.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Very fresh specimen. Relatively small, well-formed unequilibrated chondrules (apparent diameter 480±300 µm, N = 25) containing devitrified glass and some plagioclase are set in a fine grained matrix (~30 vol.%) containing relatively ferroan olivine (Fa44-47), pentlandite and troilite. Metal is absent.

Geochemistry: Olivine (Fa30.3±12.0, range Fa5.9-43.0, N = 16), low-Ca pyroxene (Fs17.4±6.4Wo1.7±1.1, range Fs1.4-23.6Wo0.4-3.6, N = 9), pigeonite (Fs28.5Wo8.2), subcalcic augite (Fs23.6Wo29.0).

Classification: R3 chondrite.

Specimens: 21.6 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang and Mr. J. Chen.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Tindouf
Date:P 2022
Mass (g):210
Pieces:1
Class:R3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):30.3±12.0
Ferrosilite (mol%):17.4±6.4
Wollastonite (mol%):1.7±1.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):21.6
Type spec location:UWB
Main mass:S.-C. Yang and J. Chen
Comments:Work name SCY-64; 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)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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