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| Ramlat Fasad 523 | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Ramlat Fasad 523 This is an OFFICIAL meteorite name. Abbreviation: RF 523 Observed fall: No Year found: 2017 Country: Oman Mass:  218 g | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 604 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 10 Apr 2021 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Ramlat Fasad 523 19°07.054’N, 53°37.596’E Zufar, Oman Find: 08 Feb 2017 Classification: Ureilite History: A single complete stone was found during a search for meteorites. Physical characteristics: Dark brown, surficially porous stone, 7 cm maximum dimension. No fusion crust. External rind of 2-3 mm thickness flakes off due to weathering. Petrography: (S. Rout, E. Gnos, B. Hofmann) The meteorite consists of roughly equal amounts of olivine and pigeonite and has a typical ureilitc texture. Olivine has reduced Fe-poor rims, 20-50 μm wide, with minute inclusions of Fe metal. Pyroxene grains show only minor reduction along rims. Silicate grain size is 0.7-1.5 mm. Shock stage of silicates is low (S1-2). Carbon is present as both coarsely crystalline graphite laths and associated coarse grains of diamond (up to 20 μm). Medium weathering (most iron metal oxidized, silicates are unaffected). Geochemistry: (S. Rout, Bern): Olivine cores: Fa15.1±0.4, Fe/Mn = 40±2, Cr2O3=0.63±0.05 wt% (N = 50), reduced rims: Fa7.2±3.7 (N = 34). Pigeonite cores: Fs13.6±0.1Wo7.0±0.1, Cr2O3 1.04±0.02 wt% (N = 19). Classification: Based on texture, mineralogy and geochemistry this is a unbrecciated, monomict, ferroan/magnesian ureilite. Possibly paired with Ramlat Fasad 524 found at a distance of only 12 m. Specimens: 32.47 g including one polished thin section at NMBE, main mass: MHTO | ||||||||||||||||||||||||||||||||||||||
| Data from: MB110 Table 0 Line 0: |
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| Institutions and collections |
NMBE: Natural History Museum Bern
Bernastrasse 15
CH-3005 Bern
Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012) Bern: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address) 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 Meteoritical Bulletin, no. 110, in preparation (2021)
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| Photos: |
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Geography:
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Statistics: 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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