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Gadamis 001
Basic information Name: Gadamis 001
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2019
Country: Libya
Mass:help 7 kg
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 206 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Gadamis 001        30.203°N, 9.535°E

Ghadamis, Libya

Purchased: 2019 May

Classification: Martian meteorite (Shergottite)

History: Found by Bedouins about 8.5 km north of Gadamis, Libya, in April 2019, and purchased shortly therafter by Aziz Habibi.

Physical characteristics: The specimen was found as three larger pieces which fit together to make an almost complete stone plus some additional fragments (total weight 7000 g). The very fresh larger specimens exhibit primary and secondary, black to reddish-brown fusion crusts.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very fresh specimen with diabasic texture. Composed predominantly of zoned, prismatic clinopyroxene and lath-like maskelynite (some as thin, curved grains in sheaf-like bundles) together with accessory merrillite, apatite, silica polymorph, titanomagnetite, ilmenite and pyrrhotite. Some pockets of deep brown quenched, glassy shock-melt are present.

Geochemistry: Subcalcic augite cores (Fs23.4-23.7Wo32.3-30.4, FeO/MnO = 27-28, N = 2), augite (Fs19.5Wo39.8, FeO/MnO = 31), ferropigeonite rims (Fs67.0-77.9Wo20.9-16.2, FeO/MnO = 39-43, N = 3), maskelynite (An54.2Or0.8).

Classification: Shergottite (diabasic).

Specimens: 20.1 g including one polished thin section at UWB; remainder with A. Habibi.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Ghadamis
Place of purchase:Agadir
Date:P 2019 May
Latitude:30.203°N
Longitude:9.535°E
Mass (g):7000
Pieces:3
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):23.4-23.7; 67.0-77.9
Wollastonite (mol%):32.3-30.4; 20.9-16.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.1
Type spec location:UWB
Main mass:A. Habibi
Comments:Work name AH 777; 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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Libya
Coordinates:
     Recommended::   (30° 12' 11"N, 9° 32' 6"E)

Statistics:
     This is 1 of 27 approved meteorites from Ghadamis, Libya (plus 2 unapproved names)
     This is 1 of 1497 approved meteorites from Libya (plus 22 unapproved names) (plus 2 impact craters)
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