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Northwest Africa 14241
Basic information Name: Northwest Africa 14241
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14241
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 702 g
Meteoritical Bulletin:  MB 110  (2022)  H5
Recommended:  H5    [explanation]

This is 1 of 11988 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 18 Sep 2021
Writeup from MB 110:

Northwest Africa 14241 (NWA 14241)

(Northwest Africa)

Purchased: 10 June 2017

Classification: Ordinary chondrite (H5)

History: Purchased from a Moroccan dealer by Mr. Jasper Spencer in 2017.

Physical characteristics: Physical Characteristics: CML received a single slice; cut faces on either side of slice are dark grayish brown to dark brownish gray with readily distinguished chondrules. Weathering is uneven in hand specimen, with patches containing reflective metal set amidst a background with no visible metal.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): In thin section, chondrules, chondrule fragments, and single grains appear crisply distinct against a dark background. In reflected light, this dark background consists of a webwork of opaque weathering products, metal, and subordinate sulfide. Plagioclase feldspar grains up to 35 μm across were observed. In BSE images, chondrule mesostases are devitrified, with crystallites generally ?5 μm across.

Geochemistry: Olivine: Fa17.8±0.2, N=22; Low-Ca pyroxene: Fs15.8±0.3Wo0.9±0.5, N=21, plagioclase feldspar: Ab87.5±1.6Or4.1±1.7, N=5.

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

Specimens: Cascadia holds 29.7 g in one piece, as well as a polished thin section and material in an epoxy butt; Mr. Jasper Spencer holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 10 June 2017
Mass (g):702
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):17.8±0.2 (N=22)
Ferrosilite (mol%):15.8±0.3 (N=21)
Wollastonite (mol%):0.9±0.5 (N=21)
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):29.7
Type spec location:Cascadia
Main mass:Mr. Jasper Spencer
Comments:Lab number CML 1191; submitted by Melinda Hutson
   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)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 9829 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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