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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
Recommended:  L6    [explanation]

This is 1 of 12478 approved meteorites (plus 8 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 Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 9344 approved meteorites from (Northwest Africa) (plus 1872 unapproved names)

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