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Dar al Gani 670
Basic information Name: Dar al Gani 670
     This is an OFFICIAL meteorite name.
Abbreviation: DaG 670
Observed fall: No
Year found: 1999
Country: Libya
Mass:help 1619 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Martian (shergottite)
Meteoritical Bulletin:  MB 84  (2000)  Martian (basaltic shergottite)
MetBase:  v. 7.1  (2006)  Shergottite-basaltic (ol phyric)
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 170 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Writeuphelp
Writeup from MB 84:

Dar al Gani 670

Libya

Found 1999

Martian basalt (shergottite)

A dark-brown stone, broken into three adjoining pieces, with a total mass of 1619 g was found in the Dar al Gani region.  Mineralogy and classification (L. Folco, MNA-SI):  centimeter-sized patches of fusion crust are present on the external surfaces; porphyritic texture consisting of millimeter-sized phenocrysts of brown olivine (Fo58–80) set in a fine grained basaltic groundmass of tabular pyroxene and interstitial feldspathic glass (An52–72Or0–1); pyroxene is primarily pigeonite (En56–66Wo9–13) with subordinate enstatite (En73–82Wo2– 3) and augite (En48–50Wo31–36); other minerals are chromite, titanian chromite, ilmenite, merrillite, and pyrrhotite; shock features include strong mosaicism and planar deformation in olivine, undulose extinction and twinning in pyroxene, and abundant impact-melt pockets and veinlets; pervasive veins filled in by calcite are due to terrestrial weathering.  Oxygen isotopes (A. Sexton and I. A. F ranchi, OU): δ17O = +2.83‰, δ18O = +4.95‰, Δ17O = +0.26‰.  The petrography and level of terrestrial weathering are essentially identical to those of DaG 476 and DaG 489, and the three are very likely paired.  Specimens:  main mass with anonymous finder; 11.9 g and one polished thin section at MNA-SI.

Data from:
  MB84
  Table 8
  Line 95:
Date:1999
Latitude:N
Longitude:E
Mass (g):1619
Pieces:3
Class:Martian
Shock stage:S5
Classifier:L. Folco (MNA-SI)
Comments:see separate entry
Plots: O isotopes:  
Institutions
   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)
Catalogs:
Search for this meteorite in the Museo Nazionale dell'Antartide database (Siena, Italy):   
References: Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Matteo Chinellato         
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Alberto Giusta   
collectionspace   
David L. Ribeca   
Dominik Stoeckli   
Franco Vignato      
Gerald Armstrong   
Matteo Chinellato   
MeteoriteCollector.org - FCOM - Russ Finney      
Volker Heinrich   
Geography:

Libya
Coordinates:Unknown.

Statistics:
     This is 1 of 1484 approved meteorites from Libya (plus 22 unapproved names) (plus 2 impact craters)

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