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Ramlat Fasad 532 | |||||||||||||||||||||||||||||||||||||||||
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Basic information | Name: Ramlat Fasad 532 This is an OFFICIAL meteorite name. Abbreviation: RF 532 Observed fall: No Year found: 2018 Country: Oman Mass: ![]() | ||||||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 13 approved meteorites classified as Lunar (gabbro). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||||||||||||
Comments: | Approved 30 Aug 2021 | ||||||||||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 110:
Ramlat Fasad 532 18°55.505’N, 53°14.500’E Zufar, Oman Find: 2018 Feb 02 Classification: Lunar meteorite (gabbro) History: A single fragment was found during a search for meteorites. Physical characteristics: Irregular fragment, 8x4x5 cm, very coarse grained, strongly wind-ablated, no fusion crust. Petrography: (J. Pape, E. Gnos, B. Hofmann) The sample exhibits a brecciated texture with large, coarse-grained (up to ~15 mm) clasts in a matrix of mineral fragments up to 0.6 mm in size. Large clasts and groundmass show the same mineralogy with dominant pigeonitic to augitic pyroxene of variable compositions and plagioclase partly transformed to maskelynite. Minor phases are ilmenite, fayalitic olivine, elongated grains of silica up to 1 mm with complex fracturing, recrystallization and irregular, undulatory extinction. Common symplectitic intergrowths of fayalitic olivine (Fa96), augitic pyroxene and silica. Accessory phases are troilite and ulvöspinel. Pyroxene grains are highly fractured and show undulatory extinctions and mosaicism. Interconnected brown glassy melt veins (exhibiting flow lines in some areas) are traversing the whole sample, containing mineral inclusions from the host rock and vesicles filled with secondary alteration products (calcite). Strongly shocked, low weathering. Geochemistry: (J. Pape) Pyroxene (pigeonite to augite) has Fs47.0±9.3Wo25.3±6.9 (Fs30.7-65.0Wo15.8-38.6), mean FeO/MgO = 4.7±4.6, mean FeO/MnO = 58.4±7.3 (N = 20). Plagioclase/maskelynite has An92.4±1.8Or 0.2±0.1 (N = 15). Symplectitic olivine has Fa95.8±1.5 (N = 7). Oxygen isotopes: (R. Greenwood, OU) δ18O = 6.205 δ17O = 3.249 Δ17O = 0.022 (all ‰). Bulk chemical composition (Activation Laboratories, all wt%): FeO = 20.77, MgO = 6.13, Al2O3 = 9.58, CaO = 13.31, TiO2 = 1.95, Th = 0.49 ppm; FeO/MnO = 66.8, Mg number = 0.344. Classification: Lunar gabbro, strong shock, low weathering. Texture, mineralogy, mineral chemistry and bulk composition are very similar to MIL 05035 and Asuka 881757, suggesting source-pairing. Paired with Ramlat Fasad 535 (found at a distance of 118 m). Specimens: 69.2 g and one polished thin section at NMBE. Main mass: MHTO. | ||||||||||||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Plots: | O isotopes: | ||||||||||||||||||||||||||||||||||||||||
Institutions and collections |
NMBE: Natural History Museum Bern
Bernastrasse 15
CH-3005 Bern
Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012) 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) MHTO: Ministry of Heritage and Tourism Muscat , Oman (institutional address; updated 10 Apr 2021) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:![]() |
Statistics: This is 1 of 2169 approved meteorites from Zufar, Oman (plus 24 unapproved names) This is 1 of 4006 approved meteorites from Oman (plus 436 unapproved names) | ||||||||||||||||||||||||||||||||||||||||
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