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Sayh al Uhaymir 606
Basic information Name: Sayh al Uhaymir 606
     This is an OFFICIAL meteorite name.
Abbreviation: SaU 606
Observed fall: No
Year found: 2017
Country: Oman
Mass:help 136.5 g
Meteoritical Bulletin:  MB 107  (2018)  H5
Recommended:  H5    [explanation]

This is 1 of 10884 approved meteorites (plus 19 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 7 Apr 2018
Writeup from MB 107:

Sayh al Uhaymir 606 (SaU 606)        20°20.555’N, 56°49.427’E

Al Wusta, Oman

Find: 12.02.17

Classification: Ordinary chondrite (H5)

History: A complete, fresh-looking individual was found during a search for meteorites on February 12, 2017. The area (to a distance of 1-2 km) was searched again in February 2018 but no paired meteorites were found.

Physical characteristics: Complete individual fully covered with black, slightly crackled fusion crust. Bulk density based on a shape model is 3.43 g/cm3.

Petrography: (Å. Rosén, Bern, E. Gnos, MHNGE, B. Hofmann, NMBE) The meteorite shows a brecciated chondritic texture with well-preserved chondrules. Minor and accessory minerals include chromite, ilmenite and native copper. Typical grain size of plagioclase is 10-20 μm. Mean chondrule size is 0.47±0.21 mm (n=128). Minor rust staining in silicates close to metal grains. Iron hydroxide rims around metal reach up to 20 μm.

Geochemistry: (Å. Rosén, Bern and B. Hofmann, NMBE) Olivine compositions are Fa18.1±0.3 (n=48), pyroxene compositions are Fs16.3±0.4, Wo0.9±0.2 (n=29). Cosmogenic radionuclides: (Å. Rosén, GeMSE): Gamma-spectroscopy performed in April 2017 showed detectable activities of short-lived radionuclides indicating decay during ~5 years. At end of measurement, 26Al was 39.1(+4.2,-3.8), 22Na was 17.9(+2.7,-1.3) and 54Mn was 1.1(+0.3,-0.2) dpm/kg.

Classification: Based on mineral compositions and mean chondrule size this is an equilibrated H5 chondrite. Cosmogenic isotope data indicate a fall around the year 2012.

Specimens: All at NMBE

Data from:
  Table 0
  Line 0:
State/Prov/County:Al Wusta
Origin or pseudonym:Desert plain
Mass (g):136.502
Shock stage:S2
Weathering grade:W0
Fayalite (mol%):18.1±0.3 (N = 48)
Ferrosilite (mol%):16.3±0.4 (N = 29)
Wollastonite (mol%):0.9±0.2 (N = 29)
Classifier:Å. Rosén, E.Gnos, B. Hofmann, NMBE
Type spec mass (g):136.502
Type spec location:NMBE
Main mass:NMBE
Finder:Edwin Gnos, Beda Hofmann, Urs Eggenberger, Martin Bucher, Malgorzata Sliz, Ioannis Kouvatsis
Comments:Field number 1702_0369; submitted by Beda Hofmann
   and collections
NMBE: Natural History Museum Bern Bernastrasse 15 CH-3005 Bern Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012)
MHNGE: Muséum d’histoire naturelle, Route de Malagnou 1, CH-1211 Genève 6 , Switzerland (institutional address; updated 27 Oct 2011)
Bern: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     Recommended::   (20° 20' 33"N, 56° 49' 26"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)
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