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Swayyah 005
Basic information Name: Swayyah 005
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Western Sahara
Mass:help 2.65 kg
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 298 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 19 Mar 2022
Writeup from MB 111:

Swayyah 005        26.710°N, 8.934°W

Saguia el Hamra, Western Sahara

Purchased: 2021 Sep

Classification: Martian meteorite (Shergottite)

History: In February 2019 a Moroccan meteorite hunter found two stones at a place called Dalaat Ladmeya in southeastern Morocco. A 2145 g stone was found at 26°42’34.38"N, 08°56’01.84"W and a similar-appearing 603 g stone at 26°42’34.49"N, 08°54’01.99" W. Both stones were sold in September 2021 to Luca Cableri of the Theatrum Mundi Gallery, Italy, and the larger stone was later sold to Wunderkammer in Zürich.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Diabasic texture. Composed predominantly of zoned prismatic clinopyroxene and lath-like maskelynite together with accessory silica polymorph, merrillite, Cr-ulvöspinel, ilmenite, pyrrhotite, baddeleyite, anorthoclase and alkali feldspathic glass, plus minor secondary calcite and Fe hydroxides. Some small, dark glassy melt pockets are present.

Geochemistry: Subcalcic augite (Fs22.1-23.1Wo38.4-35.3, FeO/MnO = 28, N = 2), pigeonite (Fs30.9Wo10.9, FeO/MnO =29), ferropigeonite rims (Fs50.0-60.8Wo12.3-17.5, FeO/MnO = 34-38, N = 3), maskelynite (An45.-0-49.9Or4.3-1.2, N = 3), anorthoclase (Ab43.8An41.0Or15.2).

Classification: Shergottite (diabasic). Paired with Swayyah 002 found in the same area.

Specimens: 22.9 g including one polished thin section at UWB; remainders of both stones separately at Wunderkammer, Zürich and Theatrum Mundi, Arezzo, Italy.

Data from:
  Table 0
  Line 0:
State/Prov/County:Saguia el Hamra
Place of purchase:Morocco
Date:P 2021 Sep
Mass (g):2648
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):22.1-23.1; 30.9; 50.0-60.8
Wollastonite (mol%):38.4-35.3; 10.9; 12.3-17.5
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.9
Type spec location:UWB
Main mass:Wunderkammer, Zürich & Theatrum Mundi, Arezzo, Italy
Comments:Work name LC21-1; 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. 111, in preparation (2022)
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Western Sahara
     Recommended::   (26° 42' 36"N, 8° 56' 2"W)

     This is 1 of 108 approved meteorites from Saguia el Hamra, Western Sahara (plus 1 unapproved name)
     This is 1 of 270 approved meteorites from Western Sahara (plus 20 unapproved names)
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