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Ramlat as Sahmah 430 | |||||||||||||||||||||||||||||||||||||
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Basic information | Name: Ramlat as Sahmah 430 This is an OFFICIAL meteorite name. Abbreviation: RaS 430 Observed fall: No Year found: 2011 Country: Oman Mass: ![]() | ||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 703 approved meteorites (plus 2 unapproved names) classified as H3. [show all] Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||||
Comments: | Approved 31 Dec 2015 | ||||||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 104:
Ramlat as Sahmah 430 (RaS 430) 20.175°N, 56.451°E Al Wusta, Oman Find: 2011 Feb Classification: Ordinary chondrite (H3) History: Found by an anonymous prospector in February 2011. Petrography: (A. Irving and S. Kuehner, UWS) Unequilibrated chondrite composed of well-formed, small to medium-sized chondrules (mostly 0.3-0.9 mm) in a dark brown, highly altered matrix. Geochemistry: Olivine (Fa0.7-19.1), orthopyroxene (Fs2.2-9.9Wo0.8-0.7), augite (Fs6.0-6.1Wo45.3-44.7). Oxygen isotopes (K. Ziegler, UNM) Analysis of an acid-washed subsample by laser fluorination gave δ17O 3.170; δ18O 5.123; Δ17O 0.465 per mil. Classification: Ordinary chondrite H3. Oxygen isotopes plot at the edge of the field for H chondrites, but an H affinity is favored by the relatively small chondrule size, abundance of (altered) metal and the low maximum Fa content in olivine. Specimens: Type specimen plus one polished thin section at PSF; main mass with anonymous collector. | ||||||||||||||||||||||||||||||||||||
Data from: MB104 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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography:![]() |
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) | ||||||||||||||||||||||||||||||||||||
Proximity search: |