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Dhofar 2066
Basic information Name: Dhofar 2066
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 2066
Observed fall: No
Year found: 2010
Country: Oman
Mass:help 13 g
Classification
  history:
Recommended:  C-ung    [explanation]

This is the only approved meteorite classified as C-ung.
Search for other: Carbonaceous chondrites, Ungrouped chondrites
Comments: Approved 16 May 2017
Writeuphelp
Writeup from MB 106:

Dhofar 2066 (Dho 2066)        19°3.728’N, 54°44.665’E

Zufar, Oman

Find: 2010

Classification: Carbonaceous chondrite (Ungrouped)

Physical characteristics: Dark irregular stone. Cut surface reveals a dark-gray interior with well-defined chondrules.

Petrography: Well-defined chondrules (average apparent diameter 620±280 μm, N=25) set in abundant fine-grained iron-rich matrix. Olivine is the dominant mineral. No orthopyroxene was found. Opaque are mostly sulfides. Magnetite and metallic FeNi are also present. XRD of a 95 mg powdered sample (D. Borschnek, B. Devouard, CEREGE) does not reveal the presence of hydrous phases (serpentine, tochilinite) typically observed in type 2 chondrites using the same experimental setup.

Geochemistry: Olivine in the range Fa0.3-8.7, average Fa1.7±2.3 (N=10), CaO 0.30±0.14 wt%, Cr2O3 0.27±0.10 wt%. Olivine is zoned. Oxygen isotopic composition (J. Gattacceca, C. Sonzogni, CEREGE) from analysis of one acid-washed 1.6 mg aliquot of a powdered 60 mg bulk sample is δ17O=10.91, δ18O=21.97 , Δ17O=-0.55 per mil (linearized, slope 0.5247, analytical uncertainties 0.08, 0.12, 0.03 per mil respectively).

Classification: Carbonaceous chondrite (C-ung). Moderate weathering. The anomalous designation is based on oxygen isotopes, and unusual mineralogy (absence of orthopyroxene, olivine composition, metal abundance). Possibly paired with Dhofar 955 and Dhofar 735, found within 1 and 3 km, respectively.

Specimens: Type specimen and polished section at CEREGE. Main mass with ArtMet collection, Poland.

Data from:
  MB106
  Table 0
  Line 0:
State/Prov/County:Zufar
Date:2010
Latitude:19°3.728'N
Longitude:54°44.665'E
Mass (g):13
Pieces:1
Class:C-ung
Weathering grade:moderate
Fayalite (mol%):1.7±2.3 (N=10)
Magnetic suscept.:3.96
Classifier:J. Gattacceca,CEREGE
Type spec mass (g):2.69
Type spec location:CEREGE
Main mass:ArtMet collection, Poland
Finder:anonymous
Comments:work name LM13; submitted by Jérôme Gattacceca
Plots: O isotopes:  
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Europole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 9 Mar 2016)
ARTMET: Meteorites and Art UL. Baczynskiego 2 45-317 Opole, Poland (private address; updated 7 Apr 2014)
Catalogs:
References: Published in Meteoritical Bulletin, no. 106, in preparation (2017)
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Geography:

Oman
Coordinates:
     Recommended::   (19° 3' 44"N, 54° 44' 40"E)

Statistics:
     This is 1 of 2104 approved meteorites from Zufar, Oman (plus 4 unapproved names)
     This is 1 of 3914 approved meteorites from Oman (plus 301 unapproved names)
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