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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:help 122.8 g
Classification
  history:
Recommended:  Lunar    [explanation]

This is 1 of 49 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 28 Jan 2014
Writeuphelp
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.

Data from:
  MB103
  Table 0
  Line 0:
State/Prov/County:Ash Sharqiyah
Origin or pseudonym:Desert plain
Date:31 Jan 2012
Latitude:22°23.999'N
Longitude:48°42.409'E
Mass (g):122.78
Pieces:2
Class:Lunar
Ferrosilite (mol%):22-43
Wollastonite (mol%):2-4
Classifier:M. Meszaros, B. Hofmann NMBE, N. Greber, Bern
Type spec mass (g):25.10
Type spec location:MHNGE
Main mass:SGS
Finder:Edwin Gnos, Beda Hofmann, Khalid al Wagdani, Ayman Majoub, Abdulaziz Solami, Siddiq Habibullah, Maruan Al Bokari
Comments:Submitted by Beda Hofmann
Plots: O isotopes:  
Institutions
   and collections
NMBE: Natural History Museum Bern Bernastrasse 15 CH-3005 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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, in preparation (2014)
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Geography:

Saudi Arabia
Coordinates:
     Recommended::   (22° 24' 0"N, 48° 42' 25"E)

Statistics:
     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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