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Dhofar 2092
Basic information Name: Dhofar 2092
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 2092
Observed fall: No
Year found: 2015
Country: Oman
Mass:help 440 g
Meteoritical Bulletin:  MB 107  (2018)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 8 Jan 2018
Writeup from MB 107:

Dhofar 2092 (Dho 2092)        18°45.30’N, 54°31.15’E

Zufar, Oman

Find: 15 Feb 2015

Classification: HED achondrite (Eucrite)

Physical characteristics: A 440 g sample supplied by the Sultan Qaboos University, which has a millimeter thick, dark brown fusion crust present on all faces except one cut face. This fusion crust lacks remaglypts instead has a mainly rough surface and angular. There are no contraction cracks present on this sample. This rock has already been cut and there is a clean face already present. Beige colour clasts can be identified on cut face and they are surrounded by a light grey ground mass. The sample is not magnetic.

Petrography (P. Hill, UWO) The sample is breccia containing numerous clasts of coarse-grained plagioclase and pyroxene. The clasts are poorly sorted and are sub-rounded with one clast reaching up to 2 cm on the cut face. Pyroxene (low and high Ca) and plagioclase make up most of the clasts and the groundmass; however, and free silica was observed in significant quantities. The free silica mainly located at grain boundaries within the fine-grained groundmass. Distinct exsolution lamellae are present within the grains of pyroxene. Troilite and oxides are present within the sample and through EDS analysis the oxides were determined to be ilmenite. No weathering products were observed within the samples suggest a low degree of terrestrial weathering. The sample does show undulose extinction in some of the grains of plagioclase and irregular fractures were observed, but not in high abundance suggesting that the sample is very weakly shocked.

Geochemistry: Mineral composition and geochemistry (M. Beauchamp, P. Hill, UWO) Plagioclase (An88.4±0.9), Low-Ca Pyroxene (Fs59.8±2.5Wo3.0±2.4), High-Ca Pyroxene (Fs27.36±2.1Wo42.5±2.3) and Free Silica (SiO2 99.3 ±1.3 wt%)

Classification: Classificaiton: Eucrite S2, W1.

Specimens: 440 g type specimen, including polished thin section, are on deposit at SQU.

Data from:
  Table 0
  Line 0:
Date:15 Feb 2015
Mass (g):440
Ferrosilite (mol%):50.2±14.9 (N=173)
Wollastonite (mol%):15.22±18.0 (N=173)
Classifier:P. Hill, N. Banerjee, G. Osinski, UWO; S. Nasir, SQU
Type spec mass (g):440
Type spec location:SQU
Main mass:SQU
Comments:Submitted by P. Hill
   and collections
UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015)
SQU: Sultan Qaboos University, College of Science, Earth Sciences Department, P.O. Box 36 Code 123 Al­Khoud, Oman (institutional address; updated 5 Oct 2014)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     Recommended::   (18° 45' 18"N, 54° 31' 9"E)

     This is 1 of 2168 approved meteorites from Zufar, Oman (plus 22 unapproved names)
     This is 1 of 4002 approved meteorites from Oman (plus 434 unapproved names)
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