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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:
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 Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography:

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