|Abar al' Uj 012|
|Basic information||Name: Abar al' Uj 012|
This is an OFFICIAL meteorite name.
Abbreviation: AaU 012
Observed fall: No
Year found: 2012
Country: Saudi Arabia
Mass: 122.8 g
This is 1 of 55 approved meteorites classified as Lunar. [show all]
Search for other: Lunar meteorites
|Comments:||Approved 28 Jan 2014|
Writeup from MB 103:
Abar al’ Uj 012 (AaU 012) 22°23.999’N, 48°42.409’E
Ash Sharqiyah, Saudi Arabia
Found: 31 Jan 2012
Classification: Lunar meteorite
History: Found by Edwin Gnos, Beda Hofmann, Khalid al Wagdani, Ayman Majoub, Abdulaziz Solami, Siddiq Habibullah, Maruan Al Bokari during a search for meteorites on January 31, 2012.
Physical characteristics: Medium gray stone with a total mass of 122.78 g. The wind-ablated meteorite consists of two fitting fragments, with masses of 104.5 and 18.27 g, respectively. Fusion crust is absent. Contains black, white and red mineral and lithic clasts (up to 6 mm) embedded in a very fine-grained matrix. Vesicles are abundant. Some vesicles and thin cracks are filled with terrestrial mineral assemblages.
Petrography: (B. Hofmann NMBE; M. Mészáros NMBE/Bern) Clast-rich impact-melt breccia, consisting of partly resorbed mineral clasts (up to 1 mm) and subrounded/rounded lithic clasts (up to 6.8 mm) set in a very fine-grained, well-crystallized impact-melt matrix. Most common mineral clasts are plagioclase with minor pyroxene and olivine. The lithic clast population is dominated by anorthositic breccias. Rare clasts of igneous rocks and a single basalt clast were observed. Vesicles (up to 3.0 mm diameter) are abundant. Shock features (polycrystalline grains, mosaicism, recrystallization) were observed in pyroxenes, olivine and plagioclase. Trace mineral phases are troilite, FeNi-metal, spinel (pleonast), SiO2 and terrestrial alteration products (carbonates, celestine, Fe-hydroxides).
Geochemistry: (N. Greber, M. Mészáros, Bern) Mineral composition: feldspar (n=46): An93.4-97.7 Or0.0-1.6; olivine (n=7): Fa28.4-35.3, Fe/Mn=95.7; orthopyroxene (n=1): Wo3.6 Fs25.2, Fe/Mn=52.8; clinopyroxene (n=10): Wo5.1-40.6 Fs12.8-36.9, Fe/Mn=89.9. Bulk analysis (ICP/ICPMS): Al2O3=28.9 wt%, FeO=5.0 wt%, Sc=8 ppm, Sm=1.2 ppm, Th=0.5 ppm. Oxygen isotopes: (R. Greenwood, OU): δ18O=5.46 permil, δ17O=2.86 permil Δ17O=0.018 permil.
Classification: Lunar feldspathic impact-melt breccia.
Specimens: Type material (25.1 g) and 3 polished thin sections at MHNGE, main mass at SGS.
NMBE: Natural History Museum Bern
Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
MHNGE: Muséum d’histoire naturelle, Route de Malagnou 1, CH-1211 Genève 6 , Switzerland (institutional address; updated 27 Oct 2011)
Bern: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address)
SGS: Saudi Geological Survey, Jeddah, Saudi Arabia (institutional address; updated 11 Feb 2010)
|References:||Published in Meteoritical Bulletin, no. 103, in preparation (2014)|
This is 1 of 101 approved meteorites from Ash Sharqiyah, Saudi Arabia (plus 1 impact crater)
This is 1 of 108 approved meteorites from Saudi Arabia (plus 3 unapproved names) (plus 1 impact crater)
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