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| Al Huwaysah 010 | |||||||||||||||||||||||||||||||||||||||
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| 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:  1412 g | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 160 approved meteorites classified as Achondrite-ung. [show all] Search for other: Achondrites, Ungrouped achondrites | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 11 Jul 2012 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
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: MB101 Table 0 Line 0: |
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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) Bern: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography:
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Statistics: This is 1 of 36 approved meteorites from Az Zahirah, Oman This is 1 of 4526 approved meteorites from Oman (plus 419 unapproved names) | ||||||||||||||||||||||||||||||||||||||
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