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Al 'Aweinat
Basic information Name: Al 'Aweinat
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Sudan
Mass:help 120 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2024)  Lunar (bas. breccia)
Recommended:  Lunar (bas. breccia)    [explanation]

This is 1 of 21 approved meteorites classified as Lunar (bas. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 21 Aug 2023
Writeuphelp
Writeup from MB 112:

Al ’Aweinat        20° 59.1873’ N, 25° 05.9103’ E

Ash Shamaliyah, Sudan

Find: 2021

Classification: Lunar meteorite (basaltic breccia)

History: Found in the desert region near the Libya-Sudan border by a nomad in 2021. Subsequently sold to a meteorite dealer on January 10, 2022, who later sold it to Jared Collins on March 10, 2023.

Physical characteristics: Single stone with minimally weathered dark fusion crust. Yellow-colored clasts are visible within a dark-colored matrix.

Petrography: (D. Sheikh, Cascadia) Sample is a breccia comprised primarily of an abundance of mm-sized basaltic clasts/clast fragments (composed mainly of radiating/tabular laths of plagioclase and zoned ferropigeonite/ferroaugite with accessory silica, ilmenite, and ulvospinel; average grain size ~0.1 mm) set within a dark, fine-grained matrix (containing some melt regions). Minor clast types identified in the host rock include anorthosites, gabbros, and noritic anorthosites, and accessory phases found within the host rock include Fe-Ni metal and troilite.

Geochemistry: Host Rock: [Olivine (Fa41.3±23.7, range Fa22.6-84.6, FeO/MnO=86±10, n=7), Low-Ca Pyroxene (Fs28.2±5.8Wo4.4±0.1, range Fs24.1-32.2Wo4.3-4.5, FeO/MnO=61±1, n=2), Pigeonite (Fs38.0±11.3Wo17.0±5.4, range Fs26.9-53.1Wo9.7-23.1, FeO/MnO=55±9, n=5), Calcic Plagioclase (An93.4±3.5Or0.5±0.3, range An85.6-96.7Or0.1-1.1, n=10)]; Basalt Clasts: [ Pigeonite (Fs49.5±22.7Wo20.4±3.6, range Fs26.1-80.3Wo13.3-24.6, FeO/MnO=59±13, n=10), High-Ca Pyroxene (Fs32.4±21.8Wo31.6±4.0, range Fs19.9-65.0Wo26.7-35.0, FeO/MnO=54±9, n=4), Calcic Plagioclase (An90.9±1.5Or0.8±0.3, range An89.1-94.1Or0.4-1.5, n=11)].

Classification: Lunar (basaltic breccia). Based on pyroxene Mg# vs Ti# plot, basalt clasts compositionally resemble low-Ti mare basalts.

Specimens: 20.3 g at Cascadia, main mass with Jared Collins.

Data from:
  MB112
  Table 0
  Line 0:
State/Prov/County:Ash Shamaliyah
Origin or pseudonym:Desert region
Date:2021
Latitude:20° 59.1873' N
Longitude:25° 05.9103' E
Mass (g):120
Pieces:1
Class:Lunar (bas. breccia)
Shock stage:high
Weathering grade:low
Fayalite (mol%):41.3±23.7
Ferrosilite (mol%):28.2±5.8, 38.0±11.3; 49.5±22.7, 32.4±21.8
Wollastonite (mol%):4.4±0.1, 17.0±5.4; 20.4±3.6, 31.6±4.0
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.3
Type spec location:Cascadia
Main mass:Jared Collins
Comments:CML 1627; submitted by Daniel Sheikh
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh   
Geography:

Sudan
Coordinates:
     Recommended::   (20° 59' 11"N, 25° 5' 55"E)

Statistics:
     This is 1 of 2 approved meteorites from Ash Shamaliyah, Sudan
     This is 1 of 12 approved meteorites from Sudan (plus 1 unapproved name)
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