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Sueilila 005
Basic information Name: Sueilila 005
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2018
Country: Western Sahara
Mass:help 282 g
Meteoritical Bulletin:  MB 108  (2020)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 291 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 7 Nov 2019
Writeup from MB 108:

Sueilila 005        24.658°N, 14.692°W

Rio de Oro, Western Sahara

Find: 2015-Apr

Classification: Lunar meteorite (feldspathic breccia)

History: The stone was found by two Moroccan hunters in April 2015 in a barren region. Further searching in the area led to the recovery of other similar-appearing stones totaling 15.6 kilograms, but this first stone was considered to be possibly different (because of the presence of some larger lithic clasts), and it was excluded from the classification of the other stones as a group under the name NWA 10495. Subsequently the first stone was sold by the finders to a Moroccan dealer, who in turn sold it in February 2018 at the Tucson Gem and Mineral Show to representatives of ArtAncient (a British antiquities dealer).

Physical characteristics: A single, dark brown stone (282 g) lacking fusion crust but exhibiting a glossy weathering patina. Sawcuts reveal a very fine grained interior with diffuse larger whitish to black clasts.

Petrography: (A. Irving and S. Kuehner, UWS; P. Carpenter, WUSL) Breccia consisting of sporadic gabbroic anorthosite and rare dunite clasts in a fine grained crystalline matrix. Minerals are anorthite, exsolved pigeonite, orthopyroxene, pigeonite, subcalcic augite, olivine, ilmenite, Ti chromite (with variable Ti content) and secondary barite.

Geochemistry: Anorthite (An97.1-97.4Or0.0, N = 2), low-Ca pyroxene host (Fs50.1Wo6.0, FeO/MnO = 58), augite exsolution lamella (Fs25.1Wo40.9, FeO/MnO = 59), augite host (Fs26.6Wo40.2, FeO/MnO = 57), orthopyroxene exsolution lamella (Fs56.1Wo1.7, FeO/MnO = 55), orthopyroxene (Fs39.6-41.7Wo2.7-3.2, FeO/MnO = 59-63), pigeonite (Fs26.7Wo19.4, FeO/MnO = 55), subcalcic augite (Fs21.0-39.2Wo26.8-25.1, FeO/MnO = 46-59), olivine (Fa41.3-56.8, FeO/MnO = 89-99, N = 3), olivine in dunite clast (Fa46.7-48.0, FeO/MnO = 93-97, N =2).

Classification: Lunar (feldspathic breccia). This specimen is from the same strewnfield as the NWA 10495 stones and is very likely paired with them.

Specimens: 21.5 g in the form of two slices (one polished) at UWB; remainder with ArtAncient, Chelsea Creek, 31 Imperial Road, London SW6 2FR, UK.

Data from:
  Table 0
  Line 0:
State/Prov/County:Rio de Oro
Place of purchase:Tucson
Mass (g):282
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):41.3-56.8
Ferrosilite (mol%):39.6-41.7; 21.0-39.2
Wollastonite (mol%):2.7-3.2; 19.4-26.8
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21.5
Type spec location:UWB
Main mass:ArtAncient, London
Comments:Work name AB#17A; 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 Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Western Sahara
     Recommended::   (24° 39' 29"N, 14° 41' 31"W)

     This is 1 of 46 approved meteorites from Rio de Oro, Western Sahara
     This is 1 of 263 approved meteorites from Western Sahara (plus 19 unapproved names)
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