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Dhofar 622
Basic information Name: Dhofar 622
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 622
Observed fall: No
Year found: 2001
Country: Oman
Mass:help 60 g
Classification
  history:
Meteoritical Bulletin:  MB 87  (2003)  H4-an
MetBase:  v. 7.1  (2006)  H4-an
Recommended:  H4-an    [explanation]

This is 1 of 13 approved meteorites classified as H4-an.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from MB 87:

Dhofar 622

Oman

Found 2001 January 15

Ordinary chondrite (H4, anomalous)

The sample (working and find number: OM 1.01–24) was found as a single fragment of 60 g in the Dhofar region. Mineralogy and classification (A. Bischoff and A. Sokol, Mün): Although the chemical analyses of olivine (Fa18.5) and pyroxene (Fs16.8 ± 1.2) are similar to those of H-chondrites, this rock is not a typical H-chondrite, and consists of much more matrix than typical ordinary chondrites. R.N. Clayton (UChi) states that Dhofar 622 “has a lower ∆17O than any ordinary chondrite we have measured (typical H-chondrites have ∆17O = +0.7).” The oxygen isotope data are: δ18O = +5.15; δ17O = +2.92; ∆17O = +0.25‰. The meteorite is very weakly shocked (S2) and moderately to heavily weathered (W3-4). Specimens: main mass with anonymous finder; thin sections and type specimen, 12 g, Mün.

Data from:
  MB87
  Table 4
  Line 132:
Date:15 Jan 2001
Latitude:19°13.672'N
Longitude:54°51.221'E
Mass (g):60
Pieces:1
Class:H4-an
Shock stage:S2
Weathering grade:W3-4
Fayalite (mol%):18.5
Ferrosilite (mol%):16.8
Classifier:A. Sokol and A. Bischoff, Mün
Type spec mass (g):12
Plots: O isotopes:  
Institutions
   and collections
UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011)
Mün: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Geography:

Oman
Coordinates:
     Recommended::   (19° 13' 40"N, 54° 51' 13"E)

Statistics:
     This is 1 of 2119 approved meteorites from Zufar, Oman (plus 4 unapproved names)
     This is 1 of 3944 approved meteorites from Oman (plus 371 unapproved names)
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