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Northwest Africa 14470
Basic information Name: Northwest Africa 14470
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14470
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1260 g
Recommended:  LL3-melt breccia    [explanation]

This is the only approved meteorite classified as LL3-melt breccia.
Search for other: LL chondrites, LL chondrites (type 3), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 20 Dec 2021
Writeup from MB 110:

Northwest Africa 14470 (NWA 14470)

(Northwest Africa)

Purchased: 2021 Aug

Classification: LL3-melt breccia

History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in August, 2021.

Physical characteristics: Dark grayish rock with mostly sandblasted surface.

Petrography: Chondritic melt breccia composed of up to 4 cm sized type 3 clasts set into abundant black shock melt. Type 3 fragments show a chondritic texture with well-defined, mostly rounded and partly packed chondrules with an apparent mean diameter of about 0.7 mm. The fine-grained shock melt is mostly recrystallized and contains entrained chondrule and mineral fragments partly with resorption textures as well as characteristic FeNi metal and sulfide spherules.

Classification: LL3-melt breccia. LL group from magnetic susceptibility (Rochette et al., 2003)

  • Rochette P., Sagnotti L., Bourot-Denise M., Consolmagno G., Folco L., Gattacceca J., Osete M.L., and Pesonen L. (2003) Magnetic classification of stony meteorites: 1. Ordinary chondrites. Meteorit. Planet. Sci. 38 251-268. (link)
Data from:
  Table 0
  Line 0:
Place of purchase:Nouadhibou, Mauritania
Date:P 2021 Aug
Mass (g):1260
Class:LL3-melt breccia
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):22.5±10.0 (0.7-41.4, n=21)
Ferrosilite (mol%):17.1±5.8 (8.1-25.5, n=23)
Wollastonite (mol%):1.4±1.3 (0.3-4.3, n=23)
Magnetic suscept.:4.49
Classifier:A. Greshake, MNB
Type spec mass (g):31.4
Type spec location:MNB
Main mass:Salamu Ali
Comments:Submitted by Ansgar Greshake
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 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 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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