NWA 17826

 

NWA 17826

Found Sahara, 2025

Achondrite (Lunar)

Troctolite Melt Breccia

Specimen is a 1.23g slice



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Northwest Africa 17826
Basic information Name: Northwest Africa 17826
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 17826
Observed fall: No
Year found: 2025
Country: Algeria
Mass: 435 g
Classification
  history:
Recommended:       Lunar (troct. melt breccia)    

This is 1 of 11 approved meteorites classified as Lunar (troct. melt breccia).    [show all]
Writeup Writeup from MB 114:
Northwest Africa 17826 (NWA 17826)
Algeria
Find: 2025 May
Classification: Lunar meteorite (troctolite melt breccia)
History: Reportedly found in Algeria and subsequently purchased from a local meteorite dealer.
Physical characteristics: Two grayish rocks lacking fusion crust.
Petrography: Melt breccia predominantly composed of up to 1.5 mm sized anorthosite melt clasts, up to 500 µm sized olivine aggregates, and less abundant low-Ca pyroxene grains set in plagioclase-rich melt rock matrix often showing pronounced flow textures. The matrix is partly glassy, partly recrystallized to small olivine and plagioclase crystals. Olivine aggregates mostly consist of numerous smaller subgrains. Accessories include troilite and FeNi metal.
Geochemistry: olivine: Fa19.0±0.5 (Fa18.3-19.7, FeO/MnO=83±10; n=7); low-Ca pyroxene: Fs17.6±1.1Wo5.5±0.1 (Fs17.4-17.6Wo5.3-5.6, FeO/MnO=49±5, n=7); calcic plagioclase: An97.6±0.2 (An97.3-98.0, n=7)
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 2011-12-24)

 
 

 

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The WWMeteorites team (for "WorldWide Meteorites" - Meteorites from around the world) was created in 2003 with the primary goal of traveling around globe in search of these fascinating celestial objects, and make them available for Science... and Collectors. Since 2017, the team has established its base camp on the island of Unst (Shetland, UK).

With four or five trips per year on average, the number of finds (in countries as diverse as Tunisia, Spain, Qatar, the Sultanate of Oman ...) has quickly become important. WWMeteorites therefore collaborates with several laboratories that analyze, and classify the new meteorites, mainly the Museum Fur Naturkunde (Berlin), the CEREGE (University of Aix-Marseille), and the Appalacjain State University (North Carolina). WWmeteorites (under the name of its founder, Fabien Kuntz.)  have already more than 500 meteorites listed in the Meteoritical Society Database.

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