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| Dhofar 2066 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Dhofar 2066 This is an OFFICIAL meteorite name. Abbreviation: Dho 2066 Observed fall: No Year found: 2010 Country: Oman Mass:  13 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 4 approved meteorites classified as C-ung. [show all] Search for other: Carbonaceous chondrites, Ungrouped chondrites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 16 May 2017 | ||||||||||||||||||||||||||||||||
| Writeup |
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: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||||
| Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 29 Oct 2018) ARTMET: Meteorites and Art, Poland (private address; updated 23 Feb 2018) |
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| References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:
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Statistics: This is 1 of 2167 approved meteorites from Zufar, Oman (plus 24 unapproved names) This is 1 of 4001 approved meteorites from Oman (plus 436 unapproved names) | ||||||||||||||||||||||||||||||||
| Proximity search: | |||||||||||||||||||||||||||||||||