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from
The Meteoritical Bulletin, no. 99, Meteoritics
& Planetary Science
Shişr
162
Zufar,
Oman
Found: 17 Feb 2006
Mass: 5525 g
Lunar
meteorite (feldspathic breccia)
History:
One stone was discovered on a gravel plateau of Miocene limestone of Middle
Fars group about 40 km NNE of Shişr.
Physical
characteristics: Dark brown stone of 5525 g without fusion
crust. Magnetic susceptibility log χ (×10-9 m3/kg)
= 2.45.
Petrography:
(R. Bartoschewitz, Bart.;
P. Appel, B. Mader, Kiel) Breccia of dominantly
anorthositic rocks and mineral fragments set in a fine-grained
recrystallized matrix of anorthositic composition. Accessory minerals are
Ni-rich iron, troilite, and chromite.
Geochemistry:
(R. Bartoschewitz, Bart,
P. Appel and B. Mader, Kiel) Fa17.8-26.4
(mg#(ol) = 73-81), FeO/MnO = 68.2; Fs16Wo15
(mg#(px) = 71-78); FeO/MnO
= 50.4; An91.7-97.5; metal Ni 65-125 mg/g, Co 6-10 mg/g. Bulk
composition (R. Korotev, WUSL):
FeO 3.3 wt%, Sc 5.3 ppm, Sm 0.55 ppm, Th 0.16
ppm, Ni 180 ppm.
Classification:
(R. Bartoschewitz, Bart.;
R. Korotev, WUSL)
Lunar feldspathic impact melt breccia
Specimens:
A total of 20.0 g of sample is on deposit at Kiel. 10 g and 2 thin sections
are on deposit at Bart,
main mass anonymous.
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