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Northwest Africa 15630
Basic information Name: Northwest Africa 15630
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15630
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 2.03 kg
Recommended:  R3    [explanation]

This is 1 of 69 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 23 Feb 2023
Writeup from MB 112:

Northwest Africa 15630 (NWA 15630)

(Northwest Africa)

Purchased: 2022 Mar

Classification: Rumuruti chondrite (R3)

History: Purchased by Rob Wesel in March 2022 from a Moroccan dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Separated well-formed, unequilibrated chondrules (apparent diameter 460 ± 290 µm, N = 25) containing devitrified glass are set in a fine grained matrix (~50 vol.%, red-brown in thin section) containing pentlandite, troilite, chromite and minor Fe metal. Also present in the studied thin section is a lithic chondrite clast (~1 cm across) with almost identical texture and mineral compositions, but containing sodic plagioclase instead of devitified glass.

Geochemistry: Olivine (Fa33.6±16.4, range Fa3.3-49.4, N = 11), low-Ca pyroxene (Fs14.6±10.1Wo0.9±0.8, range Fs2.3-32.0Wo0.2-2.7, N = 11), augite (Fs5.4Wo39.5). Lithic clast: olivine (Fa31.4±13.5, range Fa5.6-49.3, N = 11), low-Ca pyroxene (Fs12.0±8.8Wo1.3±1.8, range Fs3.7-25.8Wo0.2-5.0, N = 6), pigeonite (Fs23.3Wo16.2).

Classification: R3 chondrite.

Specimens: 24.2 g including one polished thin section at UWB; remainder with Mr. R. Wesel.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2022 Mar
Mass (g):2030
Shock stage:S2
Weathering grade:low
Fayalite (mol%):33.6±16.4
Ferrosilite (mol%):14.6±10.1
Wollastonite (mol%):0.9±0.8
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):24.2
Type spec location:UWB
Main mass:R. Wesel
Comments:Work name RW003; submitted by A. Irving
   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)
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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     This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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