Meteoritical Bulletin: Entry for Northwest Africa 15636

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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: 761 g

Classification
history:

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

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 (Fa_17.5±14.8, range Fa_0.7-45.0, N = 13), low-Ca pyroxene (Fs_18.3±7.0Wo_1.3±1.1, range Fs_7.2-25.9Wo_0.3-3.4, N = 9), pigeonite (Fs_26.8Wo_8.7).

Classification: R3 chondrite.

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

Data from:
  MB112
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2017 Dec
Mass (g):	761
Pieces:	1
Class:	R3
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

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)
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 Meteoritical Bulletin, no. 112, in preparation (2023)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
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 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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