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Northwest Africa 15429
Basic information Name: Northwest Africa 15429
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15429
Observed fall: No
Year found: 2020
Country: Algeria
Mass:help 968 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  LL3
Recommended:  LL3    [explanation]

This is 1 of 487 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 12 Nov 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15429 (NWA 15429)

Algeria

Purchased: 2020

Classification: Ordinary chondrite (LL3)

History: Purchased by L. A. Boltryk in 2020 from a Spanish dealer, who had obtained the material from an Algerian source.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Closely packed, well-formed, unequilibrated chondrules (apparent diameter 920±370 µm, N = 26) containing devitrified glass are set in a fine grained matrix containing altered kamacite, taenite, troilite, chromite and minor secondary calcite.

Geochemistry: Olivine (Fa23.3±10.8, range Fa1.5-44.4, N = 19; Cr2O3 in ferroan olivine 0.02-0.18 wt.%, mean 0.06±0.04 wt.%, N = 18), low-Ca pyroxene (Fs17.1±6.8Wo1.5±1.4, range Fs2.9-26.2Wo0.2-4.3, N = 9), pigeonite (Fs17.6Wo5.4; Fs21.4Wo8.5), augite (Fs12.5Wo43.0). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.50.

Classification: Ordinary chondrite (LL3).

Specimens: 24.8 g including one polished thin section at PSF; remainder with Mr. L. Boltryk.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Spain
Date:P 2020
Mass (g):968
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):23.3±10.8
Ferrosilite (mol%):17.1±6.8
Wollastonite (mol%):1.5±1.4
Magnetic suscept.:3.50
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):22.6
Type spec location:PSF
Main mass:L. Boltryk
Comments:Work name BOL-002; submitted by A. Irving
Institutions
   and collections		 PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)
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:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1356 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)
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Revision
  history:
  This lists important revisions made to data for this record.

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