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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:
Recommended:  H5    [explanation]

This is 1 of 11372 approved meteorites (plus 22 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 Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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