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Ramlat Fasad 576
Basic information Name: Ramlat Fasad 576
     This is an official name for a relict meteorite. Relict meteorites are composed mostly of terrestrial minerals, but are thought to have once been meteorites. Note: evidence that this was once a meteorite may not have been critically evaluated.
Abbreviation: RF 576
Observed fall: No
Year found: 2016
Country: Oman
Mass:help 2.45 kg
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  Relict iron
Recommended:  Relict iron    [explanation]

Comments: Entered 30 Aug 2021
Writeuphelp
Writeup from MB 110:

Ramlat Fasad 576        19°04.459’N, 53°27.684’E

Zufar, Oman

Find: 02 Feb 2016

Classification: Relict meteorite (Relict iron)

History: Found during a search for meteorites. 129 g were found as small fragments on the surface. An additional 2320 g of buried fragments were collected in 2017 using a metal detector.

Physical characteristics: A large number of black angular fragments were found in close proximity, many of them buried in soil. Strongly magnetic.

Petrography: Lamellar mixture of magnetite, maghemite and iron hydroxides with small relict inclusions of kamacite and schreibersite. Oxide-cemented dune sand is attached to the fragments of pure lamellar oxide.

Geochemistry: Bulk analysis (Activation laboratories, INAA) Fe = 53.0, Ni = 5.69, Co = 0.32 (all wt&); Cr = 56, Cu = 96, Ga = 14, Ir = 0.10, Pt <0.1, Au = 0.35 (all μg/g). LA-ICP-MS data show inhomogeneous distribution of Ni and Co in Fe-oxyhydroxides with Ni = 6.39±2.57, range 1.2-10.2, Co 0.56±0.30, range 0.18-1.55 (all wt%, N = 12). Compositions of relict primary phases (EDS): kamacite Ni = 6.55±0.76 (N = 7), schreibersite has molar Ni/(Ni+Fe) of 0.38 (N = 16).

Classification: Relict iron meteorite. Element concentrations affected by terrestrial weathering.

Specimens: 207 g at NMBE. Main mass: MHTO.

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Zufar
Origin or pseudonym:Desert plain
Date:02 Feb 2016
Latitude:19°04.459'N
Longitude:53°27.684'E
Mass (g):2449
Pieces:>100
Class:Relict iron
Weathering grade:high
Classifier:B. Hofmann, T. Pettke, T. Burri, E. Gnos
Type spec mass (g):207
Type spec location:NMBE
Main mass:MHTO
Finder:Edwin Gnos, Beda Hofmann, Zaid Al-Musharrafi, Å. Rosén
Comments:Field number 1602_0139.; submitted by Beda Hofmann
Institutions
   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)
Catalogs:
Relict meteorite
info:
Name: Ramlat Fasad 576
Fieldname: 1602_0139
Origin/pseudonym: Oman
Purchased:
Purchase or find date: 2016 Feb 02
Lat/long: 19°04.459'N, 53°27.684'E
Mass: 2449
Pieces: >100
Specimens: NMBE
Description: relict iron
Info:
Name assigned to: Beda Hofmann
Date assigned: 2021-05-22
Assigned by: Beda Hofmann
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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Geography:

Oman
Coordinates:
     Recommended::   (19° 4' 28"N, 53° 27' 41"E)
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