|Northwest Africa 11258|
|Basic information||Name: Northwest Africa 11258|
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11258
Observed fall: No
Year found: 1996
Country: (Northwest Africa)
Mass: 5 kg
This is 1 of 17 approved meteorites classified as LL(L)3. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
|Comments:||Approved 15 Jun 2017|
Writeup from MB 106:
Northwest Africa 11258 (NWA 11258)
Classification: Ordinary chondrite (LL(L)3)
History: Purchased by Ken Regelman in 1996 from a Moroccan dealer.
Petrography: (A. Irving and S. Kuehner, UWS) Very closely packed, well-formed chondrules (apparent diameter 600±300 μm) with little matrix.
Geochemistry: Olivine (Fa1.6-29.1, Cr2O3 in ferroan examples <0.02 wt.%, N = 7), orthopyroxene (Fs0.2-25.3Wo0.6-1.6, N = 3), clinopyroxene (Fs1.0Wo34.8; Fs22.1Wo29.8; N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.43.
Classification: Ordinary chondrite. LL(L)3. LL designation is favored based on magnetic susceptibility.
Specimens: 23 g including one polished thin section at UWB; remainder with Mr. K. Regelman.
University of Washington, Department of Earth and Space Sciences, 70
Johnson Hall, Seattle, WA 98195, United States (institutional address;
updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
ARN: Kenneth Regelman, Astronomical Research Network, 206 Bellwood Ave., Maplewood, MN 55117, United States; Website (private address)
|References:||Published in Meteoritical Bulletin, no. 106, in preparation (2017)|