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Dhofar 287 | |||||||||||||||||
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Basic information | Name: Dhofar 287 This is an OFFICIAL meteorite name. Abbreviation: Dho 287 Observed fall: No Year found: 2001 Country: Oman Mass: ![]() | ||||||||||||||||
Classification history: |
This is 1 of 26 approved meteorites classified as Lunar (basalt). [show all] Search for other: Lunar meteorites | ||||||||||||||||
Writeup![]() |
Writeup from MB 85:
Dhofar 287 Oman Found 2001 January 14 Lunar meteorite (Low-Ti, olivine-pyroxene mare basalt breccia) A dark gray, 154 g black stone without fusion crust was found in the Dhofar region of Oman, 400 m from Dhofar 025. Classification and mineralogy (M. Nazarov, Vernad; L. Taylor, UTenn): contains two adjacent lithologies, mare basalt (95 vol%) and regolith breccia (5 vol%). Basaltic portion consists of olivine (Fo70–45) and minor augite (Wo30–40 En38–45) phenocrysts (up to 1 mm) set in a subophitic, fine-grained (50–100 µm) groundmass composed of plagioclase (An85–75) and pyroxene (Wo10–25En2–50), with accessory pyroxferroite, K-Ba feldspar, apatite, ilmenite, Ti-rich chromite, ulvöspinel, baddeleyite, silica, tranquillityite, troilite, Fe-Ni metal, and a fayalite + K-rich glass mesostasis; shock veins and impact melt pockets are present; plagioclase is totally converted to maskelynite; mineral modes (vol%) are pyroxene = 49, maskelynite = 26, olivine = 18, opaques = 4, impact melt = 2; whole-rock TiO2 content = 2.8 wt%; Fe/Mn = 75 g/g; a prominent negative Eu anomaly is present; similar in composition to Apollo 12 mare basalts, but distinctly higher in Na and incompatible elements. Regolith breccia portion: clast-rich, with numerous lithic and mineral grains (up to 1 mm) cemented by finegrained mineral fragments (<100 µm) and minor impact melt; dominated by low-Ti and VLT mare basalt lithologies; minor highland material is probably present; lithic clasts are fine-grained, vitrophyric, granular to ophitic, basaltic rocks and impact melt breccias; mineral fragments are dominated by pyroxene, olivine, and plagioclase; glass fragments and spherules also occur; plagioclase, An98–66; olivine, Fo80–25; pyroxenes are highly variable, Wo5–40En2–80; main accessories are silica, fayalite, pyroxferroite, K-rich glass, apatite, ilmenite, Ti-rich chromite, ulvöspinel, troilite, and FeNi metal. Specimens: 32 g and two thin sections, Vernad; main mass with anonymous finder. | ||||||||||||||||
Data from: MB85 Table 1 Line 185: |
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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. 85, MAPS 36, A293-A322 (2001)
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Geography:![]() |
Statistics: This is 1 of 2168 approved meteorites from Zufar, Oman (plus 24 unapproved names) This is 1 of 4003 approved meteorites from Oman (plus 436 unapproved names) | ||||||||||||||||
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