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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 604 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 Meteoritical Bulletin, no. 110, in preparation (2021)
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Public domain photographs:
Beda Hofmann   

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

     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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