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Jiddat al Harasis 424
Basic information Name: Jiddat al Harasis 424
     This is an OFFICIAL meteorite name.
Abbreviation: JaH 424
Observed fall: No
Year found: 2007
Country: Oman
Mass:help 160.3 g
Meteoritical Bulletin:  MB 95  (2009)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 649 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 9 Jan 2009
Revised 19 Sep 2011: Added writeup
Writeup from MB online:

Jiddat al Harasis 424 (JaH 424)        19° 55' 22"N,  56° 21' 4"E

Al Wusta, Oman

Found: 2007

Classification: Ureilite

History: A single stone was found during a search for meteorites by E. Gnos, B. Hofmann, L. Huber and E. Janots.

Physical characteristics: Elongated, dark brown single stone with a mass of 160.32 g, no fusion crust preserved.

Petrography: (E. Janots, IfP; E. Gnos, MHNGE; B. Hofmann, NMBE): The stone consists of olivine and pyroxene with characteristic ureilitic texture. Carbon platelets (to 0.8 mm length) consisting of graphite and diamond are abundant along grain boundaries of olivine and pyroxene. Compositional ranges of silicates are Fa1.8-21.6 and Fs3.6-18.8Wo1.2-7.5. Olivine shows reduced rims (nearly pure forsterite) with minute inclusions of Fe metal (mostly weathered). Similar reduced rims are observed in pyroxene (opx Fs5.0Wo1.2). Shock stage is S2 based on (annealed?) silicates, diamond indicates higher shock level reached during an earlier collisional event. Metal and troilite are largely weathered. This stone is possibly paired with Hajmah (a), direct comparison of thin sections shows identical texture, color and degree of weathering.

Classification: Ureilite.

Specimens: All at NMBE.

Data from:
  Table 7
  Line 42:
State/Prov/County:Al Wusta, Oman
Origin or pseudonym:Desert plain
Mass (g):160.3
Shock stage:S1
Weathering grade:W4
Fayalite (mol%):14.8
Ferrosilite (mol%):11.7
Wollastonite (mol%):5.8
Classifier:E. Gnos, E. Janots, B. Hofmann
Type spec mass (g):160.3
Type spec location:NMBE
Main mass:NMBE
Finder:E. Gnos, E. Janots, B. Hofmann, L. Huber
   and collections
NMBE: Natural History Museum Bern Bernastrasse 15 CH-3005 Bern Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012)
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
MHNGE: Muséum d’histoire naturelle, Route de Malagnou 1, CH-1211 Genève 6 , Switzerland (institutional address; updated 27 Oct 2011)
References: Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)
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     Recommended::   (19° 55' 22"N, 56° 21' 4"E)

     This is 1 of 1759 approved meteorites from Al Wusta, Oman (plus 75 unapproved names)
     This is 1 of 4006 approved meteorites from Oman (plus 436 unapproved names)
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