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Dhofar 1434
Basic information Name: Dhofar 1434
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 1434
Observed fall: No
Year found: 2007
Country: Oman
Mass:help 42 g
Classification
  history:
Meteoritical Bulletin:  MB 95  (2009)  CM anomalous
Recommended:  CM-an    [explanation]

This is 1 of 9 approved meteorites classified as CM-an.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 9 Jan 2009
Writeuphelp
Writeup from MB 95:

Dhofar 1434   18°21.405′N, 54°1.555′E

Dauka, Thambreyt, Dhofar, Oman

Find: 6 February 2007

Carbonaceous chondrite (CM anomalous)

History: On 6 February 2007, Rainer Bartoschewitz (Bart) discovered the meteorite while passing the desert from the UNESCO world cultural heritage Ubar (Shişr) to the sea near Shu’aymiah.

Physical characteristics: One fragment partly covered with fresh black fusion crust (0.2 to 0.5 mm thick) and weighing 40.6 g plus three splinters weighing 0.7 g, 0.4 g, and 0.3 g were recovered.

Petrography (R. Bartoschewitz, Bart): Irregular-shaped olivine aggregates (0.1–0.7 mm), chondrules (0.2–0.7 mm) and CAIs up to 0.2 mm are set in a fine-grained matrix consisting of phyllosilicates and isolated olivine fragments up to 0.2 mm in size and sulfides (dominantly pentlandite and pyrrhotite). Kamacite occurs in olivine aggregates and chondrules. CAIs are spinel-rich. Magnetic susceptibility is log χ = 3.97 × 10−9 m3/kg. Mineral composition (R. Bartoschewitz, Bart; P. Appel, B. Mader, Kiel): Olivine has mean Fa10 ranging from Fa0.6–44 (n = 48). Chromite, TiO2 0.5–1.6, Al2O3 0.1–13.8, MgO 0.8–9.9 and kamacite Ni 5.4–6.3, Co 0.4, P 0.2–0.8 (all in wt%).

Oxygen isotopes (I. A. Franchi and R. C. Greenwood, OU): δ17O = 9.22, δ18O = 21.85, Δ17O = −2.55. The oxygen isotopic composition is anomalous for CM chondrites, but plots close to the anomalous Dhofar 225, Belgica-7904, Yamato-82162, and Yamato-86720. Classification (R. Bartoschewitz, Bart): carbonaceous chondrite (CM anomalous), S1.

Type specimens: A total of 7.0 g is on deposit at Kiel and 1.1 g on deposit at OU. Bart holds the main mass and one thin section.

Data from:
  MB95
  Table 7
  Line 5:
State/Prov/County:Zufar, Oman
Origin or pseudonym:Desert plain
Date:2007
Latitude:18°21.405'N
Longitude:54°1.555'E
Mass (g):42
Pieces:3
Class:CM anomalous
Shock stage:S1
Fayalite (mol%):0.6-44
Classifier:Bart (R. Bartoschewitz), P. Appel, B. Mader
Type spec mass (g):8.1
Type spec location:7 Kiel and 1.1 OU
Main mass:Bart
Plots: O isotopes:  
Institutions
   and collections
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Bart: Bartoschewitz Meteorite Laboratory, Lehmweg 53, D-38518 Gifhorn, Germany; Website (private address; updated 4 Aug 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)
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Geography:

Oman
Coordinates:
     Recommended::   (18° 21' 24"N, 54° 1' 33"E)

Statistics:
     This is 1 of 2118 approved meteorites from Zufar, Oman (plus 4 unapproved names)
     This is 1 of 3947 approved meteorites from Oman (plus 366 unapproved names)
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