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Rabt Sbayta 007
Basic information Name: Rabt Sbayta 007
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2017
Country: Western Sahara
Mass:help 4.43 kg
Meteoritical Bulletin:  MB 106  (2018)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 321 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 11 Sep 2017
Writeup from MB 106:

Rabt Sbayta 007        24.394°N, 14.123°W

Rio de Oro, Western Sahara

Find: 2016-Aug

Classification: Lunar meteorite (feldspathic breccia)

History: Purportedly found NE of Bir Anzarane and purchased by Ben Hoefnagels in February 2017 from a dealer in Ouarzazate, Morocco.

Physical characteristics: A single elongate stone (4432 g) exhibiting whitish mineral and lithic clasts in a medium gray, very fine-grained matrix.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of numerous mineral clasts plus some lithic clasts (themselves breccias) in a finer grained matrix. Minerals include anorthite, olivine, orthopyroxene, pigeonite, subcalcic augite, ilmenite, chromite, troilite and taenite.

Geochemistry: Olivine (Fa11.0-33.3, FeO/MnO = 71-101, N = 6), orthopyroxene (Fs18.2-19.4Wo4.6-4.1, FeO/MnO = 51-56, N = 2), pigeonite (Fs31.2Wo7.3; Fs48.6Wo5.5; FeO/MnO = 58-61), subcalcic augite (Fs51.7-59.5Wo27.0-29.3, FeO/MnO = 67-72, N = 2), plagioclase (An93.0-95.7Or1.0, N = 2). Bulk composition (R. Korotev, WUSL) INAA of subsamples gave the following mean abundances (in wt.%) FeO 4.9, Na2O 0.35; (in ppm) Sc 9.3, Ni 140, La 3.8, Sm 1.83, Eu 0.83, Yb 1.4, Lu 0.20, Hf 1.3, Th 0.63.

Classification: Lunar (feldspathic breccia). Although this lunar specimen was found in the same dense collection area as the Rabt Sbayta 002, Rabt Sbayta 004, Rabt Sbayta 005 and Rabt Sbayta 006 stones (but at a different location from Gataa Sfar), it differs from those stones in both petrologic and bulk compositional characteristics and thus is not paired with them (nor with Rabt Sbayta 008).

Specimens: 35.1 g including a polished slice at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  Table 0
  Line 0:
State/Prov/County:Rio de Oro
Place of purchase:Ouarzazate
Mass (g):4432
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):11.0-33.3
Ferrosilite (mol%):18.2-19.4; 48.6; 31.2; 51.7-59.5
Wollastonite (mol%):4.6-4.1; 5.5; 7.3; 27.0-29.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):35.1
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:Work name BH036; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Western Sahara
     Recommended::   (24° 23' 38"N, 14° 7' 23"W)

     This is 1 of 50 approved meteorites from Rio de Oro, Western Sahara
     This is 1 of 270 approved meteorites from Western Sahara (plus 20 unapproved names)
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