The Meteoritical Bulletin, No. 104
Purchased: 2014 September
Mass: 1345 g
Classification: Lunar meteorite (feldspathic breccia)
Purchased by Darryl Pitt in September 2014 from a dealer in Laayoune,
characteristics: Single stone (1345 g) consisting of
white and dark gray clasts in a medium gray matrix.
Irving and S. Kuehner, UWS)
Fragmental breccia composed of angular mineral clasts (anorthite, olivine,
orthopyroxene, augite, exsolved pigeonite, chromite, troilite, kamacite)
and sparse glass fragments (with composition equivalent to low-Ca pyroxene
+ anorthite) in a finer grained matrix. Rare grains of forsteritic olivine
are present and are associated with Cr-pleonaste spinel.
Olivine (Fa17.9; Fa35.6; Fa9.8-10.7;
FeO/MnO = 89-146; N = 5), orthopyroxene (Fs26.9-44.0Wo3.1-3.6,
FeO/MnO = 65-79, N = 3), augite (Fs17.5-17.9Wo44.7-41.7,
FeO/MnO = 43-53, N = 2), plagioclase (An95.0-97.4Or0.2-0.1,
N = 3).
(R. Korotev, WUSL)
INAA of subsamples gave the following mean abundances (in wt.%) FeO 3.0, Na2O
0.36; (in ppm) Sc 4.9, La 1.7, Sm 0.8, Eu 0.79, Yb 0.6, Lu 0.15, Th 0.3.
Lunar (feldspathic fragmental breccia). This specimen is notably felsic in comparison
to other lunar feldspathic breccias, and contains accessory forsteritic
olivine associated with Cr-pleonaste.
Specimens: 20.4 g
including one polished thin section and a polished endcut
at UWB; the
remainder is held by DPitt.