from The
Meteoritical Bulletin No. 87, Meteoritics & Planetary Science
38, A189-A248 (2003)
Dhofar 733
18°35.3' N, 54°13.8' E
Oman
Found 2002 November 12
Lunar meteorite (anorthositic granulitic breccia)
A brownish grey stone weighing 98 g was found in the Dhofar region of Oman.
Mineralogy and classification (S. Demidova, Vernad; G. Kurat,
MNHV): fusion crust is absent; the rock contains relics of mineral and lithic
clasts and shows granoblastic or poikiloblastic textures; anorthositic,
troctolitic and gabbro-noritic lithologies are present. Mineral compositions:
feldspar, An89-96; orthopyroxene, Wo4-5En73-76; clinopyroxene,
Wo36-40En48-52; olivine, Fo71-76 (Fe/Mn
~87 at). Accessory minerals are armalcolite, ilmenite, Al-Chromite, Ca-phosphate,
troilite, and FeNi metal (31-43 wt% Ni; 1.3-1.7 wt% Co); lath-shaped armalcolite
is most common; the stone is moderately weathered; smectite, gypsum, and
Fe hydroxides are present. Dho 733 was found far away from other lunar stones
collected in the Dhofar region and has a distinctly different texture. It
is probably not paired with any other Dhofar lunar finds known so far. Specimens:
type specimens of 20 g, and a thin section, Vernad; main mass with
anonymous finder.
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