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O'Malley 011 | |||||||||||||||||||||||||||||||||||||||
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Basic information | Name: O'Malley 011 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2011 Country: Australia Mass: 33.6 g | ||||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 12727 approved meteorites (plus 11 unapproved names) classified as L6. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
Comments: | Approved 23 Feb 2012 | ||||||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 100:
O’Malley 011 30°53’36.4"S, 131°23’24.0"E South Australia, Australia Found: 9 Apr 2011 Classification: Ordinary chondrite (L6) History: Single piece found by A. Tomkins on the Nullarbor plain. Physical characteristics: Rounded oblong stone covered by fusion crust. Petrography: (A. Tait, Monash) Transparent matrix and subhedral olivine grains. Chondrules edges are diffuse and poorly defined. Chondrule populations include; BO, PO. Plagioclase is dominantly <100 μm. Troilite (typically <150 μm) is more abundant than Fe-Ni metal grains (in a ratio of 10:1). The largest metal grains are <300 μm. Olivine has sharp extinction. Weathering of metal grains and troilite is not complete. Geochemistry: (A. Tait, Monash) Microprobe analyses show that olivine and pyroxene compositions are uniform: olivine Fa24.8-25.5, mean=25.25 mol%, std=0.31, n=4; Low-Ca pyroxene Fs21.4-21.7, mean=21.56 mol%, std=0.11, n=4. Classification: Ordinary Chondrite (L6, S1, W2). | ||||||||||||||||||||||||||||||||||||||
Data from: MB100 Table 1 Line 1720: |
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Institutions and collections |
Monash: Building 28
School of Geosciences
Monash University
Victoria 3800
Australia, Australia (institutional address; updated 12 Dec 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Geography: |
Statistics: This is 1 of 241 approved meteorites from South Australia, Australia (plus 3 unapproved names) (plus 4 impact craters) This is 1 of 719 approved meteorites from Australia (plus 11 unapproved names) (plus 27 impact craters) | ||||||||||||||||||||||||||||||||||||||
Proximity search: | |||||||||||||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
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