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| Jiddat al Harasis 404 | |||||||||||||||||||||||||||||||||
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| 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:  341 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 571 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 |
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: MB95 Table 7 Line 22: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||||
| Institutions 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) |
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| References: | Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)
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Geography:
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Statistics: This is 1 of 1756 approved meteorites from Al Wusta, Oman (plus 75 unapproved names) This is 1 of 4000 approved meteorites from Oman (plus 436 unapproved names) | ||||||||||||||||||||||||||||||||
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