MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 16 May 2022
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Ramlat as Sahmah 247
Basic information Name: Ramlat as Sahmah 247
     This is an OFFICIAL meteorite name.
Abbreviation: RaS 247
Observed fall: No
Year found: 2005
Country: Oman
Mass:help 579 g
Meteoritical Bulletin:  MB 91  (2007)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 604 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 1 Sep 2006
Writeup from MB 91:

Ramlat as Sahmah 247                                                20°18.685N, 56°13.519E


Find: 17 February 2005

Achondrite (ureilite)

History: S. Bartels, J. Bühler, B. Hofmann, I. Leya, and S. Lorenzetti recovered a single stone was during a systematic search for meteorites. A small fragment (0.16 g) of Fe-hydroxide with troilite inclusions found a few meters away and is probably derived from this meteorite as well.

Physical characteristics: Rounded, dark brown single stone with a mass of 579.0 g; no fusion crust preserved.

Petrography: (E. Gnos, UBE; B. Hofmann, NMBE; A. Al-Kathiri, UBE) The stone contains 16 vol% of 0.5– 1.8 mm size carbon plates consisting of graphite and diamond (confirmed by XRD). Carbon plates occur along grain boundaries of olivine (30 vol%) and pyroxene (54 vol%). The carbon plates show a preferred orientation parallel to the elongated silicate grains. Pyroxene grains are cloudy due to tiny inclusions and metal exsolution occurs in olivine at the contact with carbon, and along discrete zones within grains.

Mineral compositions and geochemistry: Mean compositions are olivine (Fa19.6) and pyroxene (Fs17.4Wo11.2). Reduced olivine grains near carbon plates reach composition of Fa1.0. Metal and troilite are partially oxidized.

Classification: Achondrite (ureilite); S2.

Type specimen: The meteorite is on deposit at NMBE.

   and collections
NMBE: Natural History Museum Bern Bernastrasse 15 CH-3005 Bern Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012)
UBE: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address)
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
Find references in NASA ADS:
Find references in Google Scholar:

     Recommended::   (20° 18' 41"N, 56° 13' 31"E)

     This is 1 of 1756 approved meteorites from Al Wusta, Oman (plus 75 unapproved names)
     This is 1 of 4002 approved meteorites from Oman (plus 434 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page