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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 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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     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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