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Dhofar 304 | |||||||||||||||||
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Basic information | Name: Dhofar 304 This is an OFFICIAL meteorite name. Abbreviation: Dho 304 Observed fall: No Year found: 2001 Country: Oman Mass: 10 g | ||||||||||||||||
Classification history: |
This is 1 of 83 approved meteorites classified as Lunar (anorth). [show all] Search for other: Lunar meteorites | ||||||||||||||||
Writeup |
Writeup from MB 87:
Dhofar 304 Oman Found 2001 April 13 Lunar meteorite (anorthositic impact melt breccia) A brownish grey stone weighing 10 g was found in the Dhofar region, Oman. Mineralogy and classification (M. Nazarov, Vernad; L. Taylor, UTenn): fusion crust is absent; meteorite is a clast-rich impact melt breccia; mineral fragments and lithic clasts are embedded in a very fine-grained impact-melt matrix; the lithic clast population is dominated by impact melt breccias; possible igneous rocks and granulites of mostly anorthositic and gabbro-noritic compositions are rare. Mineral compositions are: feldspar, An93–99; orthopyroxene, Wo1–5En70–90; clinopyroxene, Wo6–42En40–50; olivine, Fo60–90 (Fe/Mn 87 at). Accessory minerals are Ti-rich chromite, Crpleonaste, ilmenite (7–8 wt % MgO), troilite, and FeNi metal (7.8 wt% Ni; 0.6 wt% Co). The composition of the impact-melt matrix (wt%) is SiO2 = 45.0, TiO2 = 0.34, Al2O3 = 25.3, Cr2O3 = 0.17, FeO = 5.71, MnO = 0.12, MgO = 7.09, CaO = 14.8, Na2O = 0.37, K2O = 0.04, P2O5 = 0.07. The meteorite is moderately weathered; gypsum, calcite, celestite, barite, and Fe hydroxides occur in cracks and holes. Dhofar 304 is possibly paired with Dhofar 025 and Dhofar 301 because the stones were found nearby and they are similar in texture, mineral chemistry and degree of weathering. Specimens: type specimens of 2 g, and a thin section, Vernad; main mass with anonymous finder. | ||||||||||||||||
Data from: MB87 Table 4 Line 7: |
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Institutions and collections |
UTenn: Planetary Geosciences Institute, Department of Earth and Planetary Sciences, University of Tennessee, 1412 Circle Drive, Knoxville, TN 37996-1410, United States (institutional address; updated 1 Nov 2011) Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Geography: |
Statistics: This is 1 of 2167 approved meteorites from Zufar, Oman (plus 26 unapproved names) This is 1 of 3998 approved meteorites from Oman (plus 441 unapproved names) | ||||||||||||||||
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Revision history: |
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