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Sayh al Uhaymir 559
Basic information Name: Sayh al Uhaymir 559
     This is an OFFICIAL meteorite name.
Abbreviation: SaU 559
Observed fall: No
Year found: 2005
Country: Oman
Mass:help 107 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 594 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 16 May 2013
Writeuphelp
Writeup from MB 102:

Sayh al Uhaymir 559 (SaU 559)        20°33.046’N, 56°39.336’E

Al Wusta, Oman

Found: Nov 2005

Classification: Ureilite

History: During November 2005, John Blennert found a 107 g meteorite in the desert of Oman.

Physical characteristics: Exterior of the stone is rough, with preferential (wind?) ablation of the pyroxene over olivine grains. Difficult to cut, requiring seven diamond blades and one week to slice the stone in half. Surface of the polished thin section is rough.

Petrography: (L. Garvie, ASU) Typical ureilite dominated by roughly equal proportions of anhedral, fine- to medium-grained (0.5 to 1 mm) olivine and pyroxene. No graphite visible in the thin section. Extensive reduction of the olivine. Diamond abundant and confirmed by powder X-ray diffraction. Diamond clusters to 20 μm visible with a reflected-light microscope. Interstitial metal mostly altered to iron oxides.

Geochemistry: Olivine and pyroxene more reduced than in typical ureilites. Olivine cores have Fa5.2±0.1, FeO/MnO = 11.5±0.7, Cr2O3 to 0.5 wt%, CaO to 0.3 wt%, n=13, rims to Fa0.5. Low-Ca pyroxene cores Fs4.7±0.1Wo4.89±0.04, n=7.

Classification: Ureilite.

Specimens: 32 g and one thin section at ASU.

Data from:
  MB102
  Table 0
  Line 0:
State/Prov/County:Al Wusta
Date:Nov 2005
Latitude:20°33.046'N
Longitude:56°39.336'E
Mass (g):107
Pieces:1
Class:Ureilite
Shock stage:medium
Weathering grade:medium
Fayalite (mol%):5.2±0.1
Ferrosilite (mol%):4.7±0.1
Wollastonite (mol%):4.89±0.04
Classifier:L. Garvie, ASU
Type spec mass (g):32
Type spec location:ASU
Main mass:ASU
Finder:John Blennert
Comments:Submitted by L. Garvie
Institutions
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography:

Oman
Coordinates:
     Recommended::   (20° 33' 3"N, 56° 39' 20"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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