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Dar al Gani 1058
Basic information Name: Dar al Gani 1058
     This is an OFFICIAL meteorite name.
Abbreviation: DaG 1058
Observed fall: No
Year found: 1998
Country: Libya
Mass:help 1815 g
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 39 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 9 Nov 2012
Writeuphelp
Writeup from MB 101:

Dar al Gani 1058 (DaG 1058)        27.375°N, 16.184°E

Al Jufrah, Libya

Found: 1998 Sep 9

Classification: Lunar meteorite (feldspathic breccia)

History: A fairly large stone was found in 1998 September on the Dar al Gani plateau, Libya, near the find site of Dar al Gani 400.

Physical characteristics: Compact, fine grained gray stone (1815 g) with visible whitish to pale gray clasts and partially coated by orange-brown weathering products.

Petrography: (A. Irving and S. Kuehner, UWS) Very fine grained melt matrix breccia with larger feldspathic clasts. Minerals are anorthite, olivine, low-Ca pyroxene, more calcic pigeonite, Ti-bearing chromite, ilmenite and troilite.

Geochemistry: Olivine (Fa16.0-33.9; FeO/MnO = 90-108), low-Ca pyroxene (Fs29.8-30.3Wo4.8-6.4, FeO/MnO = 50-57), pigeonite (Fs33.7Wo10.2; Fs43.6Wo7.3; FeO/MnO = 59-61). Bulk composition (R. Korotev, WUSL): mean values from INAA of subsamples are 3.0 wt.% FeO, 5.1 ppm Sc, 80 ppm Ni, 1.4 ppm La, 0.6 ppm Sm, 0.69 ppm Eu, 0.48 ppm Yb, 0.2 ppm Th.

Classification: Lunar (feldspathic breccia). This specimen was found close to Dar al Gani 400, and similarities in mineralogy and bulk composition indicate that these are likely paired.

Specimens: A total of 25 g of type material is on deposit at UWS. The remainder is held by an anonymous collector.

Data from:
  MB101
  Table 0
  Line 0:
State/Prov/County:Al Jufrah
Date:1998 Sep 9
Latitude:27.375°N
Longitude:16.184°E
Mass (g):1815
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):16.0-33.9
Ferrosilite (mol%):29.8-30.3; 33.7; 43.6
Wollastonite (mol%):4.8-6.4; 10.2; 7.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):25
Type spec location:UWB
Main mass:Anonymous
Comments: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. 101, MAPS 47, in preparation (2013)
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Geography:

Libya
Coordinates:
     Recommended::   (27° 22' 30"N, 16° 11' 2"E)

Statistics:
     This is 1 of 1040 approved meteorites from Al Jufrah, Libya
     This is 1 of 1473 approved meteorites from Libya (plus 20 unapproved names) (plus 4 impact craters)
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