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Jiddat al Harasis 877
Basic information Name: Jiddat al Harasis 877
     This is an OFFICIAL meteorite name.
Abbreviation: JaH 877
Observed fall: No
Year found: 2013
Country: Oman
Mass:help 700 g
Meteoritical Bulletin:  MB 103  (2014)  H5
Recommended:  H5    [explanation]

This is 1 of 10308 approved meteorites (plus 45 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 13 Dec 2014
Writeup from MB 103:

Jiddat al Harasis 877 (JaH 877)        19°35.73’N, 55°30.16’E

Al Wusta, Oman

Found: January 2013

Classification: Ordinary chondrite (H5)

History: Collected by SQU-UWO meteorite research team in January 2013

Physical characteristics: Physical Characteristics: A 626.56 g sample supplied by SQU, which has a mm thick, dark brown-black fusion crust present on five out of six faces of the rock. Regmaglypts are infrequent and the surface is fairly smooth. Minor contraction cracks but there are larger cracks due to terrestrial weathering. On the faces covered with a fusion crust, weathering is isolated to rust spots and alteration minerals within fractures of the rock. The face without fusion crust is strongly weathered with large amounts of the iron oxide alteration and terrestrial alteration minerals present on this face. The sample is also magnetic.

Petrography (P. Hill, UWO) Many of the chondrules in this chondrite are poorly delineated due to the coarse grained nature of the chondrites’ recrystallized matrix. A majority of the chondrules are porphyritic and primarily comprised of olivine; however, low-Ca pyroxene is also abundant. Remnants of radial pyroxene and granular chondrules are present but primarily as fragments. Barred olivine chondrules were observed. The chondrite has undergone a fairly high degree of deformation. In addition to thin fractures that have been infilled with secondary alteration phases, there are few large fractures cutting across the chondrite. The matrix has been completely recrystallized with secondary feldspar common throughout. Secondary feldspar is primarily albite, but Ca and Mg substitution is also observed. Iron-nickel oxides make a series of thin networks throughout the thin section. Troilite is present primarily as anhedral blebs and inclusions that are cut by Fe-Ni oxide. All of the Fe-Ni metal has been oxidized within this thin section but there is little evidence for the weathering of silicates. Weathering category W3 category, shock stage S3.

Geochemistry: Mineral composition and geochemistry (M. Beauchamp, P. Hill, UWO) Olivine, Fa18.2±0.28 (n=28, PMD Fa=1.2); low-Ca pyroxene, Fs16.1±0.47Wo1.4±0.22 (n=15, PMD Fs=2.3).

Classification: Ordinary chondrite (H5, S3, W3).

Specimens: 694 g type specimen, including polished thin section, are on deposit at SQU.

Data from:
  Table 0
  Line 0:
State/Prov/County:Al Wusta
Origin or pseudonym:Desert plain
Place of purchase:SQU
Date:January 2013
Mass (g):700
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):18.2±0.3
Ferrosilite (mol%):16.1±0.5
Wollastonite (mol%):1.4±0.2
Classifier:P. Hill, N. Banerjee, G. Osinski, UWO; S. Nasir, SQU
Type spec mass (g):694
Type spec location:SQU
Main mass:SQU
Finder:SQU-UWO team
Comments:Fileld No SQU -8; submitted by P. Hill
   and collections
UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015)
SQU: Sultan Qaboos University, College of Science, Earth Sciences Department, P.O. Box 36 Code 123 Al­Khoud, Oman (institutional address; updated 5 Oct 2014)
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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     Recommended::   (19° 35' 44"N, 55° 30' 10"E)

     This is 1 of 1755 approved meteorites from Al Wusta, Oman (plus 75 unapproved names)
     This is 1 of 3999 approved meteorites from Oman (plus 434 unapproved names)
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