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Northwest Africa 15306
Basic information Name: Northwest Africa 15306
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15306
Observed fall: No
Year found: 2021
Country: Niger
Mass:help 2.98 kg
Classification
  history:
Recommended:  H4    [explanation]

This is 1 of 6388 approved meteorites (plus 2 unapproved names) classified as H4.   [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
Writeuphelp
Writeup from MB 111:

Northwest Africa 15306 (NWA 15306)

Niger

Purchased: 2021 Dec

Classification: Ordinary chondrite (H4)

History: Found in Niger and purchased in December 2021 by Mbark Arjdal.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed chondrules are set in a relatively coarse grained matrix conatining stained kamacite, taenite, troilite and merrillite, but no plagioclase.

Geochemistry: Olivine (Fa17.9±0.2, range Fa17.6-18.1, N = 5), low-Ca pyroxene (Fs16.0±0.7Wo1.1±0.3, range Fs15.5-17.3Wo0.6-1.5, N = 5), augite (Fs6.2±0.4Wo45.0±0.7, range Fs6.0-6.7Wo44.4-45.8, N = 3).

Classification: Ordinary chondrite (H4).

Specimens: 42.1 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Niger
Date:P 2021 Dec
Mass (g):2982
Pieces:6
Class:H4
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):17.9±0.2
Ferrosilite (mol%):16.0±0.7
Wollastonite (mol%):1.1±0.3
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):42.1
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj TN2; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Niger
Coordinates:Unknown.

Statistics:
     This is 1 of 100 approved meteorites from Niger (plus 5 unapproved names)

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