The Meteoritical Bulletin, No. 104
al Harasis 838
Find: 2003 Feb 28
Mass: 34.36 g
stone of 34.36 g was discovered about 28 km south of Al Ghaftain
on a desert expedition on Feb. 28, 2003.
characteristics: (R. Bartoschewitz, Bart) The
meteorite lacks an obvious fusion crust but has the frosted, ablated
exterior typical of Omani lunar stones. The interior is black-gray with
many white, brown, and gray inclusions. Terrestrial weathering is negligible.
P. Appel, B. Mader, Kiel) Fragmental breccia
composed of a variety of lithic clasts and mineral fragments of
plagioclase, augite, pigeonite, poor-Ca pyroxene, and
olivine set in a fine-grained matrix. Lithic clasts include anorthosite,
fragmental breccia, gabbro, norite, basalt, pyroxenite, and regolith
(chondritic and lunar metal; HASP spherule) set in a fine-grained dark gray
matrix, and with Ni-iron, troilite, pyrrhotite, pentlandite, ilmenite,
chromite, zirconolite, baddeleyite, and zircon.
P. Appel and B. Mader, Kiel) Fa39.7
(mg# = 74-53, Fe/Mn = 90, n=3); low-Ca pyroxene Fs56Wo3
(mg# = 51-32); pigeonite Fs36Wo11 (mg# = 36-58,
n=13); subcalcic augite Fs32Wo17 (n=1); augite Fs22Wo33
(mg# = 52-44, n=7); ferro-augite Fs41Wo27 (mg# =
29-33, n=9; Fe/Mn = 55); An93Or1 (An63-97,
n=63). Kamacite Ni 5-76, Co 12-5 (mg/g, n=3); taenite Ni 192, Co 15 (mg/g);
awaruite Ni 636, Co 18 (mg/g); pyrrhotite; troilite; pentlandite Ni 331, Co
11 (mg/g). Bulk composition (R. Korotev, WUSL):
FeO 4.9, K2O 0.3 wt%; Sc 8.99, Ni 229, Zr 138, La 9.8, Ce 24.5,
Nd 14.9, Sm 4.43, Eu 0.986, Ta 0.447, Ir 0.0094, Au 0,0074, Th 2.3, U 0.64
(all in ppm).
Lunar (mingled regolith breccia). Classified as a mingled regolith breccia
rather than a feldspathic fragmental breccia based as well on the presence
of mare and KREEPy material as of HASP and chondritic metal.
A total of 6.9 g is on deposit at Kiel.
Thin section and 3.5 g at Bart.
The main mass is held by the finder.