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Ramlat Fasad 523
Basic information Name: Ramlat Fasad 523
     This is an OFFICIAL meteorite name.
Abbreviation: RF 523
Observed fall: No
Year found: 2017
Country: Oman
Mass:help 218 g
Recommended:  Ureilite    [explanation]

This is 1 of 623 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 10 Apr 2021
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:
  Table 0
  Line 0:
Origin or pseudonym:Desert plain
Date:08 Feb 2017
Mass (g):218.22
Shock stage:low
Weathering grade:medium
Fayalite (mol%):15.1±0.4 (N = 14)
Ferrosilite (mol%):13.6±0.1 (N = 19)
Wollastonite (mol%):7.0±0.1 (N = 19)
Classifier:S. Rout, E. Gnos, B. Hofmann
Type spec mass (g):32.47
Type spec location:NMBE
Main mass:MHTO
Finder:M. Bucher, U. Eggenberger, E. Gnos, B. Hofmann, I. Kouvatsis, M. Sliz, A. Al-Hashemi
Comments:Field number 1702_0288; submitted by Beda Hofmann
   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)
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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Public domain photographs:
Beda Hofmann   

     Recommended::   (19° 7' 3"N, 53° 37' 36"E)

     This is 1 of 2166 approved meteorites from Zufar, Oman (plus 24 unapproved names)
     This is 1 of 4000 approved meteorites from Oman (plus 436 unapproved names)
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