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| Dhofar 1626 | |||||||||||||||||||||||||
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| Basic information | Name: Dhofar 1626 This is an OFFICIAL meteorite name. Abbreviation: Dho 1626 Observed fall: No Year found: 2006 Country: Oman Mass:  223 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 15 approved meteorites classified as Eucrite-an. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||
| Comments: | Approved 26 Sep 2011 | ||||||||||||||||||||||||
| Writeup |
Writeup from MB 100:
Dhofar 1626 (Dho 1626) 18°18.69’N, 54°07.70’E Zufar, Oman Found: 2006 Oct 2 Classification: HED achondrite (Eucrite, anomalous) History: The meteorite was found by anonymous collector in the Dhofar region of Oman in 2006. Physical characteristics: An 223 g individual, with potato-like shape. Surface of the stone is patchy brown and lacks fusion crust. Petrography: (C.A. Lorenz, Vernad) Unbrecciated, achondritic, with igneous texture. 90 vol% anorthosite. Locally, the anorthosite is grades to gabbro (10 vol%) as a result of increasing abundance of pyroxene and decrease in size of plagioclase crystals. Thickness of transitional zone between anorthosite and gabbro is ~ 5 mm. The anorthosite has coarse-grained (to 2 cm) texture and consists of feldspar (>99 vol%), with poikilitic and interstitial inclusions of pyroxene. Rare minerals are silica, chromite and troilite. The gabbro has coarse-grained (up to 1 mm) granular texture and consists of pyroxene and feldspar with accessory silica and troilite. Pyroxene has rare exolution lamellae. Geochemistry: (N.N. Kononkova, Vernad, EMP) Anorthosite: feldspar An95Ab5; pyroxene En64Wo3 (Fe/Mn = 26), En44Wo42; Gabbro: feldspar An96Ab4; pyroxene En61Wo3 (Fe/Mn = 23), En41Wo43. Oxygen isotopic composition (I. Franchi, R. Greenwood, OU, laser fluorination, ‰): δ17O 1.808; δ18O 3.889; Δ17O -0.214 per mil. Classification: Eucrite-anomalous. The mineral chemistry and oxygen isotopic composition suggest that this anorthosite-dominated meteorite is related to the HEDs. Specimens: A total of 42.4 g sample and one thin polished section are on deposit at Vernad. DMUH holds the main mass. | ||||||||||||||||||||||||
| Data from: MB100 Table 1 Line 109: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||
| Institutions and collections |
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) Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016) DMUH: Dedovsk Museum of Universe History, Russia; Website (institutional address; updated 26 Sep 2011) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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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 4002 approved meteorites from Oman (plus 436 unapproved names) | ||||||||||||||||||||||||
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