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Dhofar 1984
Basic information Name: Dhofar 1984
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 1984
Observed fall: No
Year found: 2011
Country: Oman
Mass:help 32.1 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 170 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 28 Dec 2014
Writeuphelp
Writeup from MB 103:

Dhofar 1984 (Dho 1984)        18°42.69’N, 54°9.42’E

Zufar, Oman

Found: January 2011

Classification: Lunar meteorite (feldspathic breccia)

Petrography: (S. Bell and C. Herd, UAb). Petrographic microscope examination of thin section. A clast-rich breccia with a clastic, fine-grained matrix composed mainly of plagioclase. Clasts range in size from 50 to 600 μm, and are dominated by impact breccias, cataclastic ferroan anorthosite, and rarer basaltic clasts. The latter consist of subophitic, Mg-Fe zoned augite and An-rich plagioclase; one such clast also contains part of a larger Fo69 olivine phenocryst. Fragments of plagioclase and rarer pyroxene and olivine are also present, as are glassy clasts. A preferred orientation of clasts is not observed. Very few fractures are present, indicating low shock deformation. Minimal presence of calcite veins and oxidation indicate low weathering grade.

Geochemistry: EPMA examination of carbon-coated thin sections (C. Herd and S. Bell, UAb; T. Theye, UStutt): olivine Fa21.3-43.3 (n=7); pyroxene Fs13.9-69.7Wo10.8-40.9 (n=17); plagioclase An93.6-97.0 (n=15). Bulk composition (R. Korotev, WUSL): INAA of subsamples give mean abundances of (in wt.%) FeO 5.26, Na2O 0.372, CaO 15.4, and (in ppm) Sc 11.32, La 2.8, Sm 1.35, Eu 0.79, Yb 1.10, and Th 0.41.

Classification: Achondrite, lunar feldspathic fragmental breccia.

Specimens: 7.2 g type specimen, including polished thin section and 2.4 g bulk powdered sample, are on deposit at UAb. A 0.36 g slice of the type specimen was used for INAA by Korotev. Remainder at SQU.

Data from:
  MB103
  Table 0
  Line 0:
State/Prov/County:Zufar
Date:January 2011
Latitude:18°42.69'N
Longitude:54°9.42'E
Mass (g):32.1
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):21.3-43.0 (n=7)
Ferrosilite (mol%):13.9-69.7 (n=17)
Wollastonite (mol%):10.8-40.9 (n=17)
Classifier:C. Herd and S. Bell (UAb), T. Theye (UStutt), and R. Korotev (WUSTL)
Type spec mass (g):7.2
Type spec location:UAb
Main mass:SQU
Comments:Field number O-62. Fs and Wo contents reported in data table are for all pyroxene grains analyzed.; submitted by C. Herd
Institutions
   and collections
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
SQU: Sultan Qaboos University, College of Science, Earth Sciences Department, P.O. Box 36 Code 123 Al­Khoud, Oman (institutional address; updated 5 Oct 2014)
UStutt: Universität Stuttgart, Institut für Mineralogie und Kristallchemie, Azenbergstraße 18, D-70174 Stuttgart , Germany (institutional address; updated 3 Aug 2014)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:

Oman
Coordinates:
     Recommended::   (18° 42' 41"N, 54° 9' 25"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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