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Dhofar 500
Basic information Name: Dhofar 500
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 500
Observed fall: No
Year found: 2000
Country: Oman
Mass:help 116 g
Meteoritical Bulletin:  MB 87  (2003)  Achondrite-ung
MetBase:  v. 7.1  (2006)  Achondrite-ung
Recommended:  Achondrite-ung    [explanation]

This is 1 of 119 approved meteorites classified as Achondrite-ung.   [show all]
Search for other: Achondrites, Ungrouped achondrites
Writeup from MB 87:

Dhofar 500


Found 2000 January 24

Achondrite (ungrouped)

A stone weighing 116 g was found in the Dhofar region of Oman. Mineralogy and classification (C. Lorenz and M. Ivanova, Vernad.): the rock is a metabreccia and consists of at least three different lithologies: pyroxene-feldspar, pyroxene-olivine and pyroxene-olivine-feldspar. In texture the lithologies vary from medium to coarse-grained, poikiloblastic to equigranular. Mineral chemistry: olivine Fa4.8; CaO 0.13 wt%, Cr2O3 0.42 wt%; orthopyroxene is En95Wo2, Fe/Mn ratio is 6 (at); feldspar is An13–34. Olivine and pyroxene are of the same compositions in the lithologies. The minor phases are Ca-rich augite En52Wo44; Cr-rich troilite (up to 3.11 wt% Cr), chromite and rare minute grains of Fe-Ni metal. Weathering grade is W3. The oxygen isotope composition (R. N. Clayton, UChi): δ18O = +9.21‰; δ17O = +4.29‰; ∆17O = –0.49‰, is not in the range of known meteorite groups but close to the winonaite-IAB-IIICD trend and ureilites. Mineralogically the meteorite may have some links to primitive achondrites but compositions of olivine and troilite are close to those in polymict ureilites. However, this meteorite lacks a carbon-rich matrix. Specimens: a type specimen of 23.5 g and a thin section, Vernad; main mass with anonymous finder.

Data from:
  Table 4
  Line 84:
Date:11 Jan 2000
Mass (g):116
Class:Achond Ung
Classifier:C. Lorenz, M. Ivanova, Vernad
Type spec mass (g):23.5
Plots: O isotopes:  
   and collections
UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011)
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
References: Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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     Recommended::   (18° 23' 12"N, 54° 12' 12"E)

     This is 1 of 2168 approved meteorites from Zufar, Oman (plus 22 unapproved names)
     This is 1 of 4002 approved meteorites from Oman (plus 434 unapproved names)
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