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Jiddat al Harasis 404
Basic information Name: Jiddat al Harasis 404
     This is an OFFICIAL meteorite name.
Abbreviation: JaH 404
Observed fall: No
Year found: 2006
Country: Oman
Mass:help 341 g
Meteoritical Bulletin:  MB 95  (2009)  A-Euc
Recommended:  Eucrite    [explanation]

This is 1 of 419 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 9 Jan 2009
Revised 19 Sep 2011: Added writeup
Writeup from MB online:

Jiddat al Harasis 404 (JaH 404)        19° 40' 49"N,  56° 36' 36"E

Al Wusta, Oman

Found: 2006

Classification: HED achondrite (Eucrite)

History: A single stone was found Manuel Eggimann and Edwin Gnos during a search for meteorites.

Physical characteristics: Irregular stone with fusion crust, brecciated, 340.95 g.

Petrography: (E. Gnos, MHNGE; B. Hofmann, NMBE): Heterogeneous fine-grained (most clasts are <1 mm) breccia, variable plagioclase/pyroxene ratio in different areas. The matrix is recrystallized with grain sizes > 15-20 µm. The minerals of the recrystallized fine-grained matrix and of the coarser-grained breccia clasts show the following compositional ranges: Low-Ca pyroxenes (Fs43.2-47.6Wo1.7-3.3), high-Ca pyroxene (Fs18.2-21.9Wo41.1-44.5), plagioclase (An83.3-91.6Or0.3-0.9), ilmenite (0.89-0.93 wt% MgO; 0.86-0.96 wt% MnO) and chromite (Mg# = 3.3-5.7; Cr# = 72.8-77.7). The shock grade is S5 (possibly S5 with recrystallized plagioclase). Metal and troilite are present in trace amounts.

Geochemistry: Bulk geochemistry shows MgO 8.99 wt%, CaO 10.19 wt%, Fe/Mn (wt) 34.5, mg# 0.47, Sc 28 ppm, Sm 1.44 ppm. Oxygen isotopes (I.A. Franchi and R.C. Greenwood, OU) are δ17O = 1.85, δ18O = 3.94, and Δ17O = -0.20 (mean of two replicates) (Δ17O=δ17O-0.52 δ18O).

Classification: Based on petrography and bulk chemistry this meteorite is a cumulate eucrite breccia, consistent with the O isotope data. – Paired with JaH 405, 409, and 410.

Specimens: All at NMBE.

Data from:
  Table 7
  Line 22:
State/Prov/County:Al Wusta, Oman
Origin or pseudonym:Desert plain
Mass (g):341
Shock stage:S4
Ferrosilite (mol%):45.2
Wollastonite (mol%):2.5
Classifier:E. Gnos, B. Hofmann
Type spec mass (g):341
Type spec location:NMBE
Main mass:NMBE
Finder:M. Eggimann, E. Gnos
Plots: O isotopes:  
   and collections
NMBE: Natural History Museum Bern Bernastrasse 15 CH-3005 Bern Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
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° 40' 49"N, 56° 36' 36"E)

     This is 1 of 1751 approved meteorites from Al Wusta, Oman (plus 67 unapproved names)
     This is 1 of 3947 approved meteorites from Oman (plus 366 unapproved names)
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