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Northwest Africa 14913
Basic information Name: Northwest Africa 14913
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14913
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 231 g
Meteoritical Bulletin:  MB 111  (2023)  L6
Recommended:  L6    [explanation]

This is 1 of 12995 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 9 May 2022
Writeup from MB 111:

Northwest Africa 14913 (NWA 14913)

(Northwest Africa)

Purchased: 20 Feb 2020

Classification: Ordinary chondrite (L6)

History: Purchased by Dick Pugh from Morocco Stones/Bakraoui Abdelkader at the Tucson Gem Show on February 2, 2020, and donated to Cascadia.

Physical characteristics: Physical Characteristics: Partially fusion crusted individual coated in a brown weathering patina.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): The thin section is badly stained and crosscut by numerous weathering veins and fractures. Silicates are coarse -grained and a few barely discernible chondrules are visible.

Geochemistry: Olivine: Fa24.4±0.5, N=29; Low-Ca pyroxene: Fs20.5±0.2Wo1.4±0.2, N=14; Plagioclase feldspar: Ab83.0±1.7An10.2±1.1Or6.7±1.4, N=11.

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

Specimens: Cascadia holds 227.6 g in one piece, as well as a polished thin section and material in an epoxy butt.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 20 Feb 2020
Mass (g):231.1
Shock stage:S4
Weathering grade:W3
Fayalite (mol%):24.4±0.5 (N=29)
Ferrosilite (mol%):20.5±0.2 (N=14)
Wollastonite (mol%):1.4±0.2 (N=14)
Classifier:M. Hutson, H. Babst, D. Sheikh, and A. Ruzicka, Cascadia
Type spec mass (g):227.6
Type spec location:Cascadia
Main mass:Cascadia
Comments:Lab number CML 1314; 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. 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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     This is 1 of 9829 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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