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| Jiddat al Harasis 846 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Jiddat al Harasis 846 This is an OFFICIAL meteorite name. Abbreviation: JaH 846 Observed fall: No Year found: 2011 Country: Oman Mass:  260 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 10 approved meteorites classified as OC3. [show all] Search for other: Ordinary chondrites, Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 15 Sep 2018 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 107:
Jiddat al Harasis 846 (JaH 846) 19.839°N, 55.870°E Al Wusta, Oman Find: 2011 Classification: Ordinary chondrite (type 3) History: Found by an anonymous prospector in Oman in 2011. Petrography: (A. Irving and S. Kuehner, UWS) Separated, well-formed, medium-sized chondrules (apparent diameter 560±380 µm, N = 40; some up to 2.2 mm) in a finer grained matrix. Minerals are olivine, orthopyroxene, clinopyroxene, sodic plagioclase, silica polymorph, chromite, troilite and altered kamacite. Some chondrules are devoid of olivine and are composed predominantly of orthopyroxene + a silica polymorph. Geochemistry: Olivine (Fa0.6-38.1; Cr2O3 in ferroan olivine 0.04-0.22 wt.%, mean 0.08 wt.%, sd 0.06 wt.%, N = 9), orthopyroxene (Fs1.9-35.2Wo0.5-4.4, N = 3), clinopyoxene (Fs6.0-6.1Wo43.6-44.8, N = 2). Oxygen isotopes (K. Ziegler, UNM): analyses of 7 acid-washed subsamples by laser fluorination gave δ17O 4.988, 3.882, 4.098, 4.396, 4.262, 4.762, 4.838; δ18O 8.668, 6.724, 6.533, 7.237, 6.999, 8.155, 8.124; Δ17O 0.411, 0.332, 0.649, 0.575, 0.567, 0.456, 0.549 per mil. Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.91. Classification: Ordinary chondrite (OC3). Unusual features of this specimen include chondrules dominated by orthopyroxene + a silica polymorph, oxygen isotopic compositions closer to the TFL than for typical ordinary chondrites with similar degree of desert weathering and extending to very high δ18O values. Specimens: Type specimen plus one polished thin section are at PSF; main mass with the anonymous finder. | ||||||||||||||||||||||||||||||||||||
| Data from: MB107 Table 0 Line 0: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||||||||
| Institutions and collections |
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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| Photos: |
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Geography:
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Statistics: This is 1 of 1757 approved meteorites from Al Wusta, Oman (plus 75 unapproved names) This is 1 of 4002 approved meteorites from Oman (plus 436 unapproved names) | ||||||||||||||||||||||||||||||||||||
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