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Dhofar 378
Basic information Name: Dhofar 378
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 378
Observed fall: No
Year found: 2000
Country: Oman
Mass:help 15 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Martian (shergottite)
Meteoritical Bulletin:  MB 86  (2002)  Martian (basaltic shergottite)
MetBase:  v. 7.1  (2006)  Shergottite-basaltic
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 180 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Writeuphelp
Writeup from MB 86:

Dhofar 378

Oman

Found 2000 June 17

Martian meteorite (basaltic shergottite)

A single stone of 15 g, covered with fresh black fusion crust, was recovered by an anonymous finder within the province of the other Dhofar meteorites. Classification and description: (Y. Ikeda and M. Kimura, Ibaraki; H. Takeda, Chiba): it has a doleritic or microgabbroic texture, and the grain sizes of the main minerals (pyroxenes and plagioclase glass) are ~1 mm across. It consists mainly of ferroan pyroxenes (augite and pigeonite), and plagioclase glass with quenched plagioclase rims. Minor minerals are hedenbergite, pyroxferroite, fayalite, silica, Ti-rich magnetite, ilmenite, sulfide, phosphate, and rhyolitic glass. The Fe/(Mg + Fe) ratios of pyroxenes (augite and pigeonite) range from 0.40 to more than 0.90, those of hedenbergite from 0.97 to 0.99, and olivine from 0.90 to 0.98.  The original plagioclase grains were transformed to plagioclase glass (An35 to An55) by an intense impact shock, then quenched plagioclase of the same composition a few tens of micrometer up to 100 µm in width at the boundaries between the plagioclase glass and other minerals. Oxygen isotopic composition (T. K. Mayeda and R. N. Clayton, UChi): δ18O = +4.46‰, δ17O = +2.52‰. This meteorite was recovered from an area near the Dhofar 019 basaltic shergottite, but the two meteorites are probably not paired. Dhofar 019 is doleritic and contains olivine grains with Fe/(Mg + Fe) ratios of 0.4–0.75, while these seem to be absent from Dhofar 378. Pyroxenes in Dhofar 019 are more magnesian than in Dhofar 378. Specimens: type specimens, 0.445 and 0.054 g, Ibaraki; 2.74 g MPI; main mass is with the anonymous finder.

Data from:
  MB86
  Table 2
  Line 103:
Date:17 Jun 2000
Latitude:18°09.5'N
Longitude:54°06.8'E
Mass (g):15
Pieces:1
Class:Martian
Classifier:Yukio Ikeda and M. Kimura, Ibaraki and H.Takeda, Chiba
Type spec mass (g):2.74
Institutions
   and collections
UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011)
Ibaraki: Department of Materials and Biological Sciences, Institute of Astrophysics and Planetary Science, Ibaraki University, 2-1-1 Bunkyo, Mito 310-8512, Japan (institutional address; updated 27 Feb 2011)
Chiba: Chiba Institute of Technology, Tsudanuma, Narashino, Chiba 275-0016, Japan (institutional address)
MPI: Max-Planck-Institut für Chemie, Abteilung Kosmochemie, Postfach 3060, D-55020 Mainz, Germany; Website (institutional address; updated 7 Nov 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Shinishi Kato   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
John A. Shea   
Geography:

Oman
Coordinates:
     Catalogue of Meteorites:   (18° 10'N, 54° 7'E)
     Recommended::   (18° 9' 30"N, 54° 6' 48"E)
Note: the NHM and MetBase coordinates are 1 km apart

Statistics:
     This is 1 of 2108 approved meteorites from Zufar, Oman (plus 4 unapproved names)
     This is 1 of 3932 approved meteorites from Oman (plus 300 unapproved names)
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