Meteoritical Bulletin: Entry for Jiddat al Harasis 819

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Jiddat al Harasis 819

Basic information

Name: Jiddat al Harasis 819
This is an OFFICIAL meteorite name.
Abbreviation: JaH 819
Observed fall: No
Year found: 2012
Country: Oman
Mass: 372 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	H4-an
Recommended:			H4-an [explanation]

This is 1 of 24 approved meteorites classified as H4-an. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 28 Jan 2014

Writeup

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Writeup from MB 103:

Jiddat al Harasis 819 (JaH 819) 19°38.407’N, 55°32.047’E

Al Wusta, Oman

Found: 11 Jan 2012

Classification: Ordinary chondrite (H4, anomalous)

History: Found by Edwin Gnos, Beda Hofmann, Karl Wimmer, Elise Wimmer and Florian Zurfluh during a search for meteorites on January 11, 2012.

Physical characteristics: Single wind-ablated stone of 372.1 g, no fusion crust preserved.

Petrography: (E. Gnos, MHNGE and B. Hofmann, NMBE) The meteorite contains up to 1.8 mm sized chondrules (average size 0.98±0.40 mm n=14), chondrules are poorly delineated. Petrographic grade 4 based on finely recrystallized glass (plagioclase <2 μm). Shock level S3. Troilite and iron are >95% oxidized (W4).

Geochemistry: (N. Greber, Bern) Olivine compositions are Fa_13.9-15.3, median Fa_14.4(n=26), pyroxene compositions are Fs_12.9-13.7Wo_0.4-1.2, median Fs_13.2Wo_0.7(n=9). The low iron content of olivine is confirmed by XRD (Fa_14.8). Oxygen isotopes: (R. Greenwood, OU) gave δ¹⁸O=5.77, δ¹⁷O=3.65, Δ¹⁷O= 0.653 (all per mil).

Classification: Significantly lower Fe content in olivine and pyroxene than in normal H chondrites, larger chondrule size, oxygen isotopes comparable to LL. Based on chemical similarity with H chondrites this meteorite is classified as anomalous H chondrite (H4-an).

Specimens: All at NMBE.

Data from:
  MB103
  Table 0
  Line 0:

State/Prov/County:	Al Wusta
Origin or pseudonym:	desert plain
Date:	11 Jan 2012
Latitude:	19°38.407'N
Longitude:	55°32.047'E
Mass (g):	372.116
Pieces:	4
Class:	H4-an
Shock stage:	S3
Weathering grade:	W4
Fayalite (mol%):	14.4
Ferrosilite (mol%):	13.2
Wollastonite (mol%):	0.7
Classifier:	B. Hofmann, E. Gnos, E. Greber
Type spec mass (g):	372.116
Type spec location:	NMBE
Main mass:	NMBE
Finder:	Edwin Gnos, Beda Hofmann, Elise Wimmer, Karl Wimmer, Florian Zurfluh
Comments:	Submitted by Beda Hofmann

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)
Bern: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address)

Catalogs:

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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Geography:

Oman

Oman

Coordinates:
Recommended::	(19° 38' 24"N, 55° 32' 3"E)

Statistics:
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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