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Northwest Africa 15247
Basic information Name: Northwest Africa 15247
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15247
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 28.8 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  H5
Recommended:  H5    [explanation]

This is 1 of 11801 approved meteorites (plus 23 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Sep 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15247 (NWA 15247)

(Northwest Africa)

Purchased: 2013

Classification: Ordinary chondrite (H5)

History: A 7.3 g piece of the meteorite was sent to Cascadia by John Shea, who purchased in 2013 from Steve Witt, who acquired it as part of a lot of meteorites.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): Chondrules are readily discerned in thin section, but lack sharp contacts with matrix, which is relatively coarse-grained (? 15 µm across). Plagioclase feldspar grains (? 35 µm across) are present.

Geochemistry: Olivine: Fa18.8±0.3, N=19; low-Ca pyroxene: Fs16.3±0.1Wo1.2±0.1, N=15.

Classification: Ordinary chondrite (H5) based on mineral chemistry and texture.

Specimens: Cascadia holds 6.7 g in two pieces, as well as a polished thin section; JShea holds the main mass.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:online
Date:P 2013
Mass (g):28.8
Pieces:1
Class:H5
Weathering grade:W2
Fayalite (mol%):18.8±0.3 (N=19)
Ferrosilite (mol%):16.3±0.1 (N=15)
Wollastonite (mol%):1.2±0.1 (N=15)
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):7.3
Type spec location:Cascadia
Main mass:JShea (John A. Shea, Wallingford PA, https://bigjohnmeteorites.com/)
Comments:Lab number CML 0811; submitted by Melinda Hutson
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9790 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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