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Ramlat Fasad 522
Basic information Name: Ramlat Fasad 522
     This is an OFFICIAL meteorite name.
Abbreviation: RF 522
Observed fall: No
Year found: 2017
Country: Oman
Mass:help 1.59 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 522        19°07.114’N, 53°20.322’E

Zufar, Oman

Find: 05 Feb 2017

Classification: Ureilite

History: A single small fragment was found during a search for meteorites.

Physical characteristics: Dark brown-olive wind ablated stone, 1.3 cm maximum dimension. No fusion crust.

Petrography: (S. Rout, E. Gnos, B. Hofmann) The meteorite consists of dominant olivine (60 vol%) and minor pigeonite (25 vol%), with typical ureilitc texture, grain size of silicates is 0.6-1.5 mm. Rounded grains of chromite, up to 500 μm are common (~2 vol%). Olivine grains have reduced Fe-poor rims with minute inclusions of Fe metal, mostly oxidized due to weathering. Larger metal at grain boundaries is completely weathered. Carbon platelets have irregular shape, are up to 1 mm in size and consist of diamond. Shock stage of silicates is low (S1-2). Medium weathering (most iron metal oxidized, silicates are unaffected).

Geochemistry: (S. Rout, Bern): Olivine cores Fa18.3±0.2, Fe/Mn = 36.2±1.0, Cr2O3 0.71±0.12 wt% (N = 29); reduced olivine rims: Fa>8.8, Cr2O3 0.73±0.09 wt% (N = 13). Pigeonite cores: Fs15.8±0.1Wo8.2±0.1, Cr2O3 1.13±0.18 wt% (N = 13). Chromite: Cr2O3 60.0±1.1 wt%, FeO 15.6±2.6 wt%, MgO 11.1±1.8 wt% (N = 3).

Classification: Based on texture, mineralogy and geochemistry this is a unbrecciated, monomict, chromite-bearing ferroan ureilite.

Specimens: 0.336 g including one polished thin section at NMBE, main mass: MHTO

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Desert plain
Date:05 Feb 2017
Mass (g):1.585
Shock stage:low
Weathering grade:medium
Fayalite (mol%):18.2±0.3 (N = 33)
Ferrosilite (mol%):15.8±0.1 (N = 12)
Wollastonite (mol%):8.2±0.1 (N = 12)
Classifier:S. Rout, E. Gnos, B. Hofmann
Type spec mass (g):0.336
Type spec location:NMBE
Main mass:MHTO
Finder:M. Bucher, U. Eggenberger, E. Gnos, B. Hofmann, I. Kouvatsis, M. Sliz, Z. Al-Musharrafi
Comments:Field number 1702_0202; 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' 7"N, 53° 20' 19"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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