NWA 8251 (39.91 gram)

Classification: Primitive achondrite – Lodranite
Place/Time: December 2013 in Erfoud, Morocco
Mass: 853g

History: Purchased by Marcin Cimala in December 2013 from a dealer in Ouarzazate, Morocco.
Petrography: (A. Irving and S. Kuehner, UWS) Matrix-poor breccia composed mainly of angular mineral grains (including bright green clinopyroxene) and sparse stained metal. Minerals are olivine, orthopyroxene, clinopyroxene, stained kamacite, troilite and chromite.
Geochemistry: Olivine (Fa_11.7-11..8; FeO/MnO = 27-30), orthopyroxene (Fs_10.5-10.7Wo_4.9-4.0; FeO/MnO = 16), clinopyroxene (Fs_5.0-5.7Wo_43.8-44.6; FeO/MnO = 10-15). Oxygen isotopes (K. Ziegler, UNM): analyses of acid washed subsamples by laser fluorination gave, respectively δ¹⁷O = 0.345, -0.184, -0.220, δ¹⁸O = 2.428, 2.359, 2.221, Δ¹⁷O = -0.937, -1.430, -1.393 per mil (for a TFL slope of 0.528).
Classification: Lodranite breccia. This material is likely paired with NWA 8118 and NWA 8216.
Specimens: 20.2 g including a polished thin section at UWB. The remainder is held by Mr. M. Cimala.