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Swayyah 001
Basic information Name: Swayyah 001
     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 4.6 kg
Classification
  history:
Recommended:  Lunar (gabbro)    [explanation]

This is 1 of 10 approved meteorites classified as Lunar (gabbro).   [show all]
Search for other: Lunar meteorites
Comments: Approved 11 Oct 2019
Writeuphelp
Writeup from MB 108:

Swayyah 001        26.709°N, 8.851°W

Saguia el Hamra, Western Sahara

Purchased: 2018 Nov

Classification: Lunar meteorite (gabbro)

History: Two large stones (2338 g, 1754 g) and several smaller stones were found together. One stone (177 g) was purchased by Darryl Pitt in November 2018. The 1754 g stone was purchased by Aziz Habibi in January 2019, and subsequently acquired by Darryl Pitt, who independently purchased three additional stones from several Mauritanian dealers in March 2019.

Physical characteristics: All stones lack fusion crust. Fresh interiors have a mottled dark gray appearance with a relatively coarse grained, equigranular texture.

Petrography: (A. Irving and S. Kuehner, UWS; P. Carpenter, WUSL) Coarse grained, with a gabbroic texture (mean grainsize 1.5 mm). Composed of patchily zoned clinopyroxene, maskelynite, and olivine, with accessory ilmenite, troilite, tranquillityite, Th-free monazite and rare kamacite. Minor secondary calcite and hyalophane were observed on some grain boundaries.

Geochemistry: Olivine (Fa66.6-84.2, FeO/MnO = 92-102, N = 3), pigeonite cores (Fs30.1-31.6Wo13.4-10.4, FeO/MnO = 53, N = 2), pigeonite rim (Fs44.4Wo12.5, FeO/MnO = 59), subcalcic augite rim (Fs46.9Wo32.8, FeO/MnO = 71), maskelynite (An85.1-89.1Or0.8-0.3, N = 2).

Classification: Lunar (mare gabbro).

Specimens: 46.9 g including one polished thin section and one polished endcut at UWB; remainder with DPitt.

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:Saguia el Hamra
Place of purchase:Agadir, Morocco, and Mauritania
Date:P 2018 Nov
Latitude:26.709°N
Longitude:8.851°W
Mass (g):4602
Pieces:6
Class:Lunar (gabbro)
Shock stage:high
Weathering grade:low
Fayalite (mol%):66.6-84.2
Ferrosilite (mol%):30.1-31.6
Wollastonite (mol%):13.4-10.4
Classifier:A. Irving and S. Kuehner, UWS, and P. Carpenter, WUSL
Type spec mass (g):46.9
Type spec location:UWB
Main mass:DPitt/B. Hoefnagels
Comments:Work names AH 700, MVCH 451, MVCH 469, MVCH 471 and MVCH 477; submitted by A. Irving
Institutions
   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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
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Geography:

Western Sahara
Coordinates:
     Recommended::   (26° 42' 32"N, 8° 51' 4"W)

Statistics:
     This is 1 of 84 approved meteorites from Saguia el Hamra, Western Sahara (plus 1 unapproved name)
     This is 1 of 206 approved meteorites from Western Sahara (plus 20 unapproved names)
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