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Khawr al Fazra 018
Basic information Name: Khawr al Fazra 018
     This is an OFFICIAL meteorite name.
Abbreviation: KaF 018
Observed fall: No
Year found: 2013
Country: Saudi Arabia
Mass:help 0.86 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 514 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 28 Jan 2014
Writeuphelp
Writeup from MB 103:

Khawr al Fazra 018 (KaF 018)        19°26.637’N, 50°46.956’E

Ash Sharqiyah, Saudi Arabia

Found: 15 Feb 2013

Classification: Ureilite

History: Found by Edwin Gnos, Beda Hofmann, Ayman Majoub search for meteorites on small patch of desert soil between dunes on Feb. 15, 2013.

Physical characteristics: Sand-nodule of 0.86 g cemented by dark brown magnetic, Ni-rich Fe-(hyd)oxides, with remnants of original meteorite up to 3 mm in size.

Petrography: Polished thin section shows terrestrial quartz sand grains cemented by maghemite and Fe-hydroxides. Inclusions of meteoritic remnants up to 3 mm in size consist of olivine, pyroxene, diamond platelets, traces of Fe-metal, troilite.

Geochemistry: (N. Greber, Bern) olivine compositions are Fa5.6-19.6, median Fa11.6, Cr2O3 0.47±0.22 wt% (n=36), Ca-poor pyroxene compositions are Fs13.2-15.3Wo3.3-9.1, Cr2O3 0.86-1.09 wt% (n=3), Ca-rich pyroxene compositions are Fs5.3-16.4Wo25.7-33.3 , median Fs9.8Wo26.7, mean Cr2O3 1.46±0.56 wt% (n=8). The sand-rich weathering rind has the following composition (XRF): Fe 24.5wt%, Ni 0.7wt%.

Classification: Based on silicate compositions, high Cr content of silicates, and the presence of diamond platelets this is an ureilite.

Specimens: All material at MHNGE.

Data from:
  MB103
  Table 0
  Line 0:
State/Prov/County:Ash Sharqiyah
Origin or pseudonym:fossil lake bed
Date:15 Feb 2013
Latitude:19°26.637'N
Longitude:50°46.956'E
Mass (g):0.855
Pieces:1
Class:Ureilite
Weathering grade:W6
Fayalite (mol%):11.6
Ferrosilite (mol%):14.5
Wollastonite (mol%):3.6
Classifier:B. Hofmann, E. Gnos, E. Greber
Type spec mass (g):0.86
Type spec location:MHNGE
Main mass:SGS
Finder:Edwin Gnos, Beda Hofmann, Ayman Majoub
Comments:Submitted by Beda Hofmann
Institutions
   and collections
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)
SGS: Saudi Geological Survey, Jeddah, Saudi Arabia (institutional address; updated 11 Feb 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:

Saudi Arabia
Coordinates:
     Recommended::   (19° 26' 38"N, 50° 46' 57"E)

Statistics:
     This is 1 of 103 approved meteorites from Ash Sharqiyah, Saudi Arabia (plus 1 unapproved name) (plus 1 impact crater)
     This is 1 of 111 approved meteorites from Saudi Arabia (plus 4 unapproved names) (plus 2 impact craters)
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