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Ramlat Fasad 551
Basic information Name: Ramlat Fasad 551
     This is an OFFICIAL meteorite name.
Abbreviation: RF 551
Observed fall: No
Year found: 2018
Country: Oman
Mass:help 317 g
Recommended:  CO3    [explanation]

This is 1 of 616 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 30 Aug 2021
Writeup from MB 110:

Ramlat Fasad 551        19°00.774’N, 53°28.811’E

Zufar, Oman

Find: 2018 Feb 09

Classification: Carbonaceous chondrite (CO3)

History: 35 fragments were found in close proximity during a search for meteorites, one fragment (1802_0249; 80.8 g) was found 52 m south of the others.

Physical characteristics: A total of 36 fragments up to 5 cm in size, dark brown, no fusion crust.

Petrography: (Åke Rosén, E. Gnos, B. Hofmann) Chondrules, and CAIs and olivine grains (up to 0.7 mm) in dark-brown matrix. Typical size of chondrules 0.2-0.5 mm (rarely to 1.2 mm). Abundant grains of FeS (polycrystalline, to 200 μm) and iron metal (to 1 mm) are present in matrix and chondrules, partial alteration of metal and sulfide. Unshocked (S1), medium weathering.

Geochemistry: (Å. Rosén) Olivine Fa35.5±6.4, range Fa12.8-39.5 (N = 27). Enstatite Fs4.6±3.5Wo1.6±1.2 (Fs2.3-12.0Wo1.0-5.0, N = 10). Plagioclase Ab38.9-40.9Or1.1-1.5 (N=2).

Classification: Based on chondrule size, texture and mineralogy this is a carbonaceous chondrite of type CO3. Unshocked. Medium weathering.

Specimens: 86.2 g and one polished thin section at NMBE. Main mass: MHTO.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Desert plain
Date:2018 Feb 09
Mass (g):316.886
Shock stage:S1
Weathering grade:medium
Fayalite (mol%):35.5±6.4 (n=27)
Ferrosilite (mol%):4.6±3.5 (n=10)
Wollastonite (mol%):1.6±1.2 (n=10)
Magnetic suscept.:3.50
Classifier:Å. Rosén, E. Gnos, B. Hofmann
Type spec mass (g):86.200
Type spec location:NMBE
Main mass:MHTO
Finder:Thomas Blaise, Edwin Gnos, Beda Hofmann, Felix Mechelke, Malgorzata Sliz, Zaid Al-Musharrafi
Comments:Field numbers 1802_0251; 1802_0249; 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)
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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     Recommended::   (19° 0' 46"N, 53° 28' 49"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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