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Al Huwaysah 010
Basic information Name: Al Huwaysah 010
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2010
Country: Oman
Mass:help 1412 g
Meteoritical Bulletin:  MB 101  (2012)  Achondrite-ung
Recommended:  Achondrite-ung    [explanation]

This is 1 of 142 approved meteorites classified as Achondrite-ung.   [show all]
Search for other: Achondrites, Ungrouped achondrites
Comments: Approved 11 Jul 2012
Writeup from MB 101:

Al Huwaysah 010        22°44.921’N, 55°28.331’E

Az Zahirah, Oman

Found: 2010 Jan 2

Classification: Ungrouped achondrite

History: Two stones with a total mass of 1411.79 g were found in Oman during a search for meteorites.

Physical characteristics: The stones are reddish brown and lack fusion crust. Variations in color result from weathering effects.

Petrography: (B. Hofmann, NMBE; F. Zurfluh, C. Opitz, N. Greber, Bern; E. Gnos, MHNGE): The rock shows an equigranular texture, with grain sizes of 0.2-0.5 mm. It consists of ~70 vol% of olivine (Fa16.5, molar Fe/Mn=31.8), showing numerous small pyroxene inclusions along grain boundaries, a total of 12 vol% pyroxene, mainly augite (Fs10.8Wo43.7) and a minor amount of orthopyroxene (Fs13.9Wo0.7), 6 vol% of feldspar (Ab70.3), poikilitically enclosing olivine and pyroxene, 5 vol% of chromite and 1 vol% of apatite. Accessory phases are iron (basically Ni free), troilite, fine graphite and Ni-rich iron sulfide (as inclusion in chromite). Terrestrial weathering products include 6 vol% of iron oxides (maghemite), iron hydroxides, traces of gypsum and a Mg-rich weathering phase. The Fe-oxides often occur as tabular phases (up to 0.5 mm in length) along grain boundaries and penetrating the silicate phases. The rock is very weakly shocked (S2). Strong weathering.

Geochemistry: Bulk analysis showed Fe/Mn (wt%) = 65.2, Ni = 435 ppm. Oxygen isotopes (R.C. Greenwood, OU, ethanolamine thioglycollate cleaned, mean of two replicates): δ17O = 2.31, δ18O = 4.73, and Δ17O = -0.14 (all per mil).

Classification: Achondrite, ungrouped. The stone is related to brachinites and ungrouped achondrites NWA 1500 and NWA 4042.

Specimens: All at NMBE.

Data from:
  Table 0
  Line 0:
State/Prov/County:Az Zahirah
Origin or pseudonym:desert plain
Date:2010 Jan 2
Mass (g):1411.8
Shock stage:S2
Fayalite (mol%):15.9
Ferrosilite (mol%):10.7
Wollastonite (mol%):45.1
Magnetic suscept.:4.81
Classifier:C. Opitz, F. Zurfluh, Bern; B. Hofmann, NMBE; and E. Gnos, MHNGE
Type spec mass (g):1411.8
Type spec location:NMBE
Main mass:NMBE
Finder:U. Eggenberger, E. Gnos, N. Greber, F. Zurfluh
Comments:Submitted by Beda Hofmann
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)
Bern: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address)
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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     Recommended::   (22° 44' 55"N, 55° 28' 20"E)

     This is 1 of 21 approved meteorites from Az Zahirah, Oman
     This is 1 of 4006 approved meteorites from Oman (plus 436 unapproved names)
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