Meteoritical Bulletin: Entry for Northwest Africa 15206

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Northwest Africa 15206

Basic information

Name: Northwest Africa 15206
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15206
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 13 kg

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	H7
Recommended:			H7 [explanation]

This is 1 of 31 approved meteorites classified as H7. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 1 Oct 2022

Writeup

Writeup from MB 111:

Northwest Africa 15206 (NWA 15206)

(Northwest Africa)

Purchased: 2020 Nov

Classification: Ordinary chondrite (H7)

History: Purchased by Fangmei Wang in November 2020 from a Mauritanian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The specimen has a predominantly triple grain junction metamorphic texture with sporadic oikocrysts of low-Ca pyroxene enclosing olivine chadacrysts. No chondrule structures are present. Accessory phases include kamacite, low-Ti chromite, troilite, merrillite and chlorapatite.

Geochemistry: Olivine (Fa_17.4±0.3, range Fa_17.1-17.7, N = 4), low-Ca pyroxene (Fs_15.4±0.2Wo_2.6±1.0, range Fs_15.2-15.6Wo_1.7-4.1, N = 5), augite (Fs_6.9±0.1Wo_42.4±0.8, range Fs_6.8-7.0Wo_42.9-41.8, N = 2), plagioclase (Ab_85.6-86.3An_8.1-7.8Or_6.4-6.0, N = 2).

Classification: Ordinary chondrite (H7).

Specimens: 67.1 g including one polished thin section at UWB; 795 g with WangZ; remainder with F. Wang.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2020 Nov
Mass (g):	13000
Pieces:	1
Class:	H7
Shock stage:	S2
Weathering grade:	W0/1
Fayalite (mol%):	17.4±0.3
Ferrosilite (mol%):	15.4±0.2
Wollastonite (mol%):	2.8±1.0
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	67.1
Type spec location:	UWB
Main mass:	F. Wang
Comments:	Work name WZY-81; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
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 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. ?

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Chunliang Zhang
Guchen Chen
Qi Lv
Ziyao Wang