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Ramlat as Sahmah 530
Basic information Name: Ramlat as Sahmah 530
     This is an OFFICIAL meteorite name.
Abbreviation: RaS 530
Observed fall: No
Year found: 2014
Country: Oman
Mass:help 30 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 472 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 2 Mar 2018
Writeuphelp
Writeup from MB 107:

Ramlat as Sahmah 530 (RaS 530)        20°34.104’N, 55°43.342’E

Al Wusta, Oman

Find: 20 Apr 2014

Classification: Ureilite

History: The meteorite was found on 20 April 2014 during a field trip in the Oman desert.

Physical characteristics: Brownish individual lacking any fusion crust.

Petrography: The meteorite is dominantly composed of <1 mm sized olivine grains, sometimes poikilitically enclosing augite crystals. Olivine shows abundant reduced rims; the meteorite contains flaky graphite and Cr-bearing sulfides. Cracks are often found to be filled with barite likely due to intense terrestrial weathering.

Geochemistry: Reduced rims in olivine: Fa1.4-4.5; olivine contains 0.28±0.03 wt% Cr2O3 and 0.22±0.02 wt% CaO; augite contains 1.58±0.03 wt% Cr2O3 and 3.37±0.03 wt% Al2O3

Classification: Ureilite, augite-bearing

Data from:
  MB107
  Table 0
  Line 0:
State/Prov/County:Al Wusta
Date:20 Apr 2014
Latitude:20°34.104'N
Longitude:55°43.342'E
Mass (g):30
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:high
Fayalite (mol%):21.2±0.5 (n=15)
Ferrosilite (mol%):11.3±0.1 (n=14)
Wollastonite (mol%):36.6±0.2 (n=14)
Classifier:A. Greshake, MNB
Type spec mass (g):6.6
Type spec location:MNB
Main mass:Marcin Cimala
Finder:Marcin Cimala
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
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Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake      
Geography:

Oman
Coordinates:
     Recommended::   (20° 34' 6"N, 55° 43' 21"E)

Statistics:
     This is 1 of 1745 approved meteorites from Al Wusta, Oman
     This is 1 of 3929 approved meteorites from Oman (plus 301 unapproved names)
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