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Northwest Africa 15447
Basic information Name: Northwest Africa 15447
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15447
Observed fall: No
Year found: 2022
Country: Morocco
Mass:help 4.15 kg
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  LL3
Recommended:  LL3    [explanation]

This is 1 of 474 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 4 Dec 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15447 (NWA 15447)

Morocco

Purchased: 2022

Classification: Ordinary chondrite (LL3)

History: A single stone weighing 4150 g was found by a nomad in NWA. Carlos Muñecas Muñoz (Expometeoritos) purchased the sample from a dealer of Morocco in 2022.

Physical characteristics: Sample is sparsely coated with portions of black flow-lined fusion crust. Chondrules and fragments are visible on the exterior. The interior shows abundant close-packed chondrules and sparse FeNi metal.

Petrography: Description and classification (A. Love, App) Sample shows chondritic texture composed of well-defined chondrules (average apparent diameter 692 μm, n=107) set within a fine-grained, opaque matrix. Most chondrules have devitrified mesostasis and isotropic glass is rare. Additional minerals are: FeNi metal (~1 vol%), troilite, rare phosphate minerals and chromite.

Geochemistry: (A. Love, App) Olivine (Fa14.7±9.9, Fe/Mn=46.8±19.1, n=20; Cr2O3 in Fa>2=0.14±0.1, n=16); low Ca pyroxene (Fs10.3±8.9Wo0.8±0.8, Fe/Mn=26.1±22.8, n=14); pigeonite (Fs9.2Wo11.3, n=1).

Classification: Ordinary chondrite (LL3 C-S2 W1) Based on unequilibrated mineral compositions, average apparent diameter of chondrules, metal abundance and magnetic susceptibility, sample is an LL3.

Specimens: Carlos Muñecas Muñoz (Expometeoritos) holds the main mass. A polished thin section and 50.78 g end cut are on deposit at App.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2022
Mass (g):4150
Pieces:1
Class:LL3
Shock stage:C-S2
Weathering grade:W1
Fayalite (mol%):14.7±9.9
Ferrosilite (mol%):10.3±8.9; 9.2
Wollastonite (mol%):0.8±0.8; 11.3
Magnetic suscept.:3.60
Classifier:Anthony Love
Type spec mass (g):50.78
Type spec location:App
Main mass:Carlos Muñecas Muñoz (Expometeoritos)
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
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:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2049 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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