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Northwest Africa 15248
Basic information Name: Northwest Africa 15248
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15248
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 58.3 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  L6
Recommended:  L6    [explanation]

This is 1 of 12920 approved meteorites (plus 11 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Sep 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15248 (NWA 15248)

(Northwest Africa)

Purchased: 2015

Classification: Ordinary chondrite (L6)

History: A 22.3g endcut was sent to Cascadia by John Shea, who purchased the meteorite in 2015 from Eegooblago Meteorites, who acquired it the same year from a Moroccan merchant.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): Three large chondrules (all between 1 and 2 mm across) are readily discernable in thin section; other smaller chondrules are barely discernable from coarse matrix. Plagioclase feldspar grains are coarse (many > 50 µm across). A large (~0.7 × 1.2 mm) opaque region is comprised of feldspar intergrown with numerous small chromite-rich spinel grains, forming a feldspathic chromite assemblage (FCA).

Geochemistry: Olivine: Fa25.5±0.3, N=22; low-Ca pyroxene: Fs21.2±0.2Wo1.4±0.2, N=16. Plagioclase feldspar: Ab81.6±0.9Or7.1±0.8An11.3±0.8, N=12. FCA: Feldspar ranges in composition from Ab58.9Or2.0 near the center of the object to Ab84.1Or4.5 at the edge; spinel: Mg# ranges from 23.9 to 30.5; Cr# ranges from 56.2 to 71.9; grains contain between 1.78-3.45 wt% TiO2.

Classification: Ordinary chondrite (L6) based on mineral chemistry and texture.

Specimens: Cascadia holds 21.5 g in one piece, as well as a polished thin section and material in an epoxy butt; JShea holds the main mass.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:online
Date:P 2015
Mass (g):58.3
Pieces:1
Class:L6
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):25.5±0.3 (N=22)
Ferrosilite (mol%):21.2±0.2 (N=16)
Wollastonite (mol%):1.4±0.2 (N=16)
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):22.3
Type spec location:Cascadia
Main mass:JShea (John A. Shea, Wallingford PA, https://bigjohnmeteorites.com/)
Comments:Lab number CML 1341; 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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