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Northwest Africa 15636
Basic information Name: Northwest Africa 15636
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15636
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 761 g
Meteoritical Bulletin:  MB 112  (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 23 Feb 2023
Writeup from MB 112:

Northwest Africa 15636 (NWA 15636)

(Northwest Africa)

Purchased: 2017 Dec

Classification: Rumuruti chondrite (R3)

History: Purchased by Ziyao Wang in December 2017 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Separated well-formed, unequilibrated chondrules (apparent diameter 430 ± 230 µm, N = 25) containing devitrified glass are set in a fine grained matrix (~40 vol.%, dark brown in thin section) containing pentlandite, troilite, chromite, sodic plagioclase and minor Ni-poor kamacite.

Geochemistry: Olivine (Fa17.5±14.8, range Fa0.7-45.0, N = 13), low-Ca pyroxene (Fs18.3±7.0Wo1.3±1.1, range Fs7.2-25.9Wo0.3-3.4, N = 9), pigeonite (Fs26.8Wo8.7).

Classification: R3 chondrite.

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

Data from:
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2017 Dec
Mass (g):761
Shock stage:S2
Weathering grade:low
Fayalite (mol%):17.5±14.8
Ferrosilite (mol%):18.3±7.0
Wollastonite (mol%):1.3±1.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):26
Type spec location:UWB
Main mass:WangZ
Comments:Work name WZY-126; 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, 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)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ziyao Wang         

     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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