The Meteoritical Bulletin, No. 103
Purchased: 2014 September
Mass: 72 g
meteorite (feldspathic breccia)
Purchased by Stefan Ralew in September 2014 in Erfoud, Morocco.
characteristics: Single stone (72 g) lacking fusion crust
and composed of angular, mostly whitish clasts in a very dark gray matrix
with some crosscutting veins of vesicular glass.
Irving and S. Kuehner, UWS) Fragmental olivine-poor breccia composed of
mineral clasts in a finer matrix. Minerals include anorthite, pigeonite,
orthopyroxene, augite, ilmenite and merrillite, along with rare olivine,
Cr-armalcolite and kamacite.
Orthopyroxene (Fs27.0Wo2.6; FeO/MnO = 70, N = 1), ferroan
pigeonite (Fs53.0Wo16.8, FeO/MnO = 65, N = 1),
pigeonite (core Fs26.5Wo19.8; FeO/MnO = 54; rim Fs71.6Wo25.2;
FeO/MnO = 85), augite (Fs23.4Wo41.0, FeO/MnO = 58, N
= 1), olivine (Fa30.4, FeO/MnO = 92; Fa11.3, FeO/MnO
= 117, N = 2), plagioclase (An96.1-96.5Or0.1-0.5, N =
2). Bulk composition (R.
Korotev, WUSL) INAA of subsamples
gave the following mean abundances (in wt.%) FeO 5.2, Na2O 0.44; (in ppm) Sc 11.8, La
6.0, Sm 2.5, Eu 0.85, Yb 2.3, Lu 0.32, Th 1.7.
Lunar (feldspathic fragmental breccia). This specimen contains much less
olivine than most lunar feldspathic breccias, but some of the olivine that
is present is very magnesian.
Specimens: 14.4 g including one polished endcut
at UWB; main mass