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Rabt Sbayta 012
Basic information Name: Rabt Sbayta 012
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2016
Country: Western Sahara
Mass:help 11.1 g
Meteoritical Bulletin:  MB 108  (2020)  Martian (polymict breccia)
Recommended:  Martian (polymict breccia)    [explanation]

This is 1 of 18 approved meteorites classified as Martian (polymict breccia).   [show all]
Search for other: Martian meteorites
Comments: Approved 19 May 2019
Writeup from MB 108:

Rabt Sbayta 012        24°4.2917’N, 14°46.1147’W

Rio de Oro, Western Sahara

Find: 2016

Classification: Martian meteorite (polymict breccia)

History: Found by Zaid Oualguirah and his group in 2016 near Bir Anzarane. Purchased by George Penneff in 2017 from Daoud Wabich in Zagora, Morocco.

Physical characteristics: Three stones, black fusion crust. A slice of the interior reveals a dark-gray surface containing light and dark clasts.

Petrography: (D. Sheikh, FSU) Polymict breccia composed of light and dark lithic clasts and mineral fragments set in a fine-grained matrix. Mineral compositions and textures throughout the specimen are highly variable.Mineral phases identified include orthopyroxene, pigeonite, augite, plagioclase, apatite, and magnetite.

Geochemistry: Orthopyroxene: Fs26.6±5.5Wo2.8±0.6 (Fs21.3-38.2Wo1.9-4.0, N=11, Fe/Mn=43.4±6.5); Pigeonite: Fs34.2±7.9Wo9.0±0.1 (Fs28.6-39.8Wo8.9-9.1, N=2, Fe/Mn=46.2±7.6); Augite: Fs23.9±8.0Wo38.5±3.7 (Fs18.4-33.1Wo36.1-42.8, N=3, Fe/Mn=47.4±9.4); Plagioclase: An38.9±8.1Ab58.8±7.0Or2.3±1.3 (An20.9-46.7Ab51.7-73.1Or1.5-6.0, N=11). Oxygen isotopes (K. Ziegler, UNM): analyses of acid-washed subsamples by laser fluorination gave, respectively, δ17O 4.064, 3.943, 3.904; δ18O 6.525, 6.337, 6.332; Δ17O 0.619, 0.597, 0.561 per mil.

Classification: Martian (Polymict Breccia). Likely paired with NWA 7034 and pairings.

Specimens: 2.37 grams at UCLA; main mass with George Penneff.

Data from:
  Table 0
  Line 0:
State/Prov/County:Rio de Oro
Mass (g):11.1
Class:Martian (polymict breccia)
Shock stage:High
Weathering grade:Low
Ferrosilite (mol%):26.6; 34.2; 23.9
Wollastonite (mol%):2.8; 9.0; 38.5
Classifier:D. Sheikh, FSU
Type spec mass (g):2.37
Type spec location:UCLA
Main mass:George Penneff
Finder:Zaid Oualguirah
Comments:Submitted by Daniel Sheikh
Plots: O isotopes:  
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Public domain photographs:
Daniel Sheikh      

Western Sahara
     Recommended::   (24° 4' 18"N, 14° 46' 7"W)

     This is 1 of 47 approved meteorites from Rio de Oro, Western Sahara
     This is 1 of 265 approved meteorites from Western Sahara (plus 20 unapproved names)
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