NWA 16890

 

NWA 16890

Found Sahara, 2024

Enstatite Chondrite

EH6

Specimen is a 2.81g slice



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Northwest Africa 16890
Basic information Name: Northwest Africa 16890
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16890
Observed fall: No
Year found: 2024
Country: (Northwest Africa)
Mass: 427 g
Classification
  history:
Recommended:       EH6    
Writeup Writeup from MB 113:
Northwest Africa 16890 (NWA 16890)
(Northwest Africa)
Find: 2024 Feb
Classification: Enstatite chondrite (EH6)
Physical characteristics: Crusted stone. Cut surface reveals a dark recrystallized interior.
Petrography: (J. Gattacceca, CEREGE) Metal-rich recrystallized chondrite. Main opaque minerals is kamacite, sometimes with taenite exsolutions. Presence of ninigerite, daubréelite, oldhamite, carletonmooreite.
Geochemistry: Enstatite Fs0.37±0.31Wo0.54±0.04 (n=13). Plagioclase An12.4±1.6Ab84.7±1.2Or2.9±0.4 (n=3). Kamacite has 3.68±0.12 wt% Si (n=3).
Classification: Enstatite chondrite (EH6). EH group based on the Si content of kamacite.
Specimens: Type specimen at CEREGE, main mass with Kuntz.
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 2023-06-10)
Kuntz: Fabien Kuntz, France; Website (private address)

 

About Us

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.

In order to have a classification and an official referencement established, as well as to allow the long-term research on the meteorites, a part of 20% of each find by WWmeteorites is deposited in a lab
oratory


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