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Dar al Gani 489
Basic information Name: Dar al Gani 489
     This is an OFFICIAL meteorite name.
Abbreviation: DaG 489
Observed fall: No
Year found: 1997
Country: Libya
Mass:help 2.15 kg
Meteoritical Bulletin:  MB 83  (1999)  Martian (basaltic shergottite)
NHM Catalogue:  5th Edition  (2000)  Martian (shergottite)
MetBase:  v. 7.1  (2006)  Shergottite-basaltic (ol phyric)
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 321 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Writeup from MB 83:

Dar al Gani 489


Found 1997

Martian basalt (shergottite)

A dark-brown stone of 2146 g was found in Dar al Gani. Mineralogy and classification (L. Folco and B. Anselmi, MNA-SI): devoid of fusion crust; porphyritic basaltic texture consisting of millimeter-sized phenocrysts of brown olivine (Fo61–78, Mn/Fe = 0.021–0.025 atomic) set in a more fine grained matrix of pigeonite laths (En57–72 Wo5–15, Mn/Fe = 0.030–0.038 atomic) and interstitial feldspathic glass (An56–67Ab33–43); minor mineral components include augite, chromite, Ti-rich chromite, ilmenite, merrillite and pyrrhotite; texture, mineral modes and chemistry close to EETA79001 lithology A; shock deformation features include twinning in pigeonite, strong mosaicism and planar deformation features in olivine, and abundant impact-melt pockets and veinlets; pervasive veins filled in by calcite are due to terrestrial weathering. Oxygen isotopes (A. S. Sexton and I. A. Franchi, OU): d17O = 2.895, d18O = 4.980, and D17O = 0.305‰. The petrography, mineralogy, and noble gas chemistry of DaG 476 and DaG 489 are very similar, and the two are likely paired (L. Folco, MNA-SI, and J. Zipfel and L. Schultz, MPI). Specimens: main mass with anonymous finder, 34.9 g; two polished thin sections, MNA-SI.

Data from:
  Table 6
  Line 140:
Latitude: ~27°08'N
Longitude: ~16°05'E
Mass (g):2146
Shock stage:S5
Classifier:L. Folco and B. Anselmi (MNA-SI)
Plots: O isotopes:  
   and collections
MNA-SI: Museo Nazionale dell'Antartide, Università di Siena, Via Laterina 8, I-53100 Siena, Italy; Website (institutional address; updated 13 Dec 2011)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
MPI: Max-Planck-Institut für Chemie, Abteilung Kosmochemie, Postfach 3060, D-55020 Mainz, Germany; Website (institutional address; updated 7 Nov 2015)
Search for this meteorite in the Museo Nazionale dell'Antartide database (Siena, Italy):   
References: Published in Meteoritical Bulletin, no. 83, MAPS 34, A169-A186 (1999)
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     Recommended::   (27° 8'N, 16° 5'E)

     This is 1 of 1046 approved meteorites from Al Jufrah, Libya
     This is 1 of 1553 approved meteorites from Libya (plus 24 unapproved names) (plus 2 impact craters)
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