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Sayh al Uhaymir 628
Basic information Name: Sayh al Uhaymir 628
     This is an OFFICIAL meteorite name.
Abbreviation: SaU 628
Observed fall: No
Year found: 2016
Country: Oman
Mass:help 9.41 kg
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 594 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 10 Apr 2021
Writeuphelp
Writeup from MB 110:

Sayh al Uhaymir 628 (SaU 628)        20°48.176’N, 57°02.343’E

Al Wusta, Oman

Find: 08 Feb 2016

Classification: Ureilite

History: A single complete individual was found during a search for meteorites.

Physical characteristics: Dark brown rounded individual, wind-ablated, no fusion crust

Petrography: (T. Burri, E. Gnos, B. Hofmann) The sample consist mainly of olivine and pigeonite and shows the characteristic ureilitic texture, typical grain size is 0.8-2.0 mm. Olivine has reduced rims (width 50-100 μm) with minute Fe metal inclusions, partly oxidized due to weathering. Carbon platelets (up to 2 mm in length) consist dominantly of diamond. Silicates are weakly shocked (S2). Medium weathering, most iron metal oxidized while silicates are not affected.

Geochemistry: (T. Burri, NMBE) Olivine cores Fa21.8±0.3, Fe/Mn = 45±2, Cr2O3=0.62±0.05 wt% (N = 16), reduced Ol rims have Fa>4.7. Pigeonite has Fs18.5±0.8Wo5.8±1.9, Cr2O3 1.00±0.05 wt% (N = 20).

Classification: Based on texture, mineralogy and geochemistry this is an unbrecciated, monomict, ferroan ureilite.

Specimens: 135.6 g including one polished thin section at NMBE, main mass: MHTO

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Al Wusta
Origin or pseudonym:Desert plain
Date:08 Feb 2016
Latitude:20°48.176'N
Longitude:57°02.343'E
Mass (g):9406
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:medium
Fayalite (mol%):21.8±0.3 (N = 16)
Ferrosilite (mol%):18.5±0.8 (N = 20)
Wollastonite (mol%):5.8±1.9 (N = 20)
Classifier:T. Burri, E. Gnos, B. Hofmann
Type spec mass (g):135.6
Type spec location:NMBE
Main mass:MHTO
Finder:E. Gnos, B. Hofmann, Å. Rosén
Comments:Field number 1602_0182; 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:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Beda Hofmann      
Geography:

Oman
Coordinates:
     Recommended::   (20° 48' 11"N, 57° 2' 21"E)

Statistics:
     This is 1 of 1755 approved meteorites from Al Wusta, Oman (plus 75 unapproved names)
     This is 1 of 3999 approved meteorites from Oman (plus 434 unapproved names)
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