The Meteoritical Bulletin, No. 102.
Purchased: 2013 June
Mass: 23.4 g
Lunar meteorite (feldspathic breccia)
Purchased by Darryl Pitt in June 2013 from a Moroccan dealer.
(A. Irving and S. Kuehner, UWS)
Complex polymict breccia composed of angular mineral clasts, some mare
basalt clasts and glass spheres in a fine grained matrix. Sparse grains of
forsterite are present; other minerals are more ferroan olivine, low-Ca
pyroxene, subcalcic augite, anorthite, ilmenite and troilite.
Forsterite (Fa5.7-9.0; FeO/MnO = 91-104), ferroan olivine (Fa39.7-47.7;
FeO/MnO = 89-95), low-Ca pyroxene (Fs31.2-33.5Wo5.6-3.9;
FeO/MnO = 56-63), subcalcic augite (Fs17.2-44.4Wo36.5-26.6;
FeO/MnO = 49-62), subcalcic ferroaugite (Fs58.8Wo33.4;
FeO/MnO = 72), anorthite (An96.8-97.3Or0.1-0.2). Bulk composition
(R. Korotev, WUSL):
INAA of subsamples gave mean abundances of FeO 4.8 wt.%, and (in ppm) Sc 9,
La 7.9, Sm 3.7, Eu 0.96, Yb 2.7, Th 1.3.
Lunar (mingled regolithic breccia). Olivine as magnesian as that present in
this meteorite is unknown among other lunar specimens.
Specimens: 4.7 g and
one polished thin section are at UWB. The remainder is with DPitt.