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O'Malley 016 | |||||||||||||||||||||||||||||||||||||||
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Basic information | Name: O'Malley 016 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2011 Country: Australia Mass: 17.5 g | ||||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 6484 approved meteorites (plus 2 unapproved names) classified as H4. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
Comments: | Approved 23 Feb 2012 | ||||||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 100:
O’Malley 016 30°32’24.7"S, 131°15’18.3"E South Australia, Australia Found: 10 Apr 2011 Classification: Ordinary chondrite (H4) History: Single piece found by A. Tomkins on the Nullarbor plain. Physical characteristics: Dark reddish brown stone, ~60% fusion crusted. Petrography: (A. Tait, Monash) A finely recrystallized matrix surrounds well-defined chondrules, although the matrix is difficult to distinguish due to weathering. Plagioclase is absent across most of the sample, although a few small (<5 μm) grains were found. Chondrule populations include BO, RP, and PO. Most olivine grains have undulose extinction, but no shock lamellae. The sample is extensively oxidized; Fe-Ni metal is almost completely destroyed. Geochemistry: (A. Tait, Monash) Microprobe analyses show that olivine and pyroxene compositions are uniform: olivine Fa19.3-19.7, mean=19.47 mol%, std=0.19, n=4; Low-Ca pyroxene Fs16.8-17.2, mean=16.99 mol%, std=0.21, n=4. Classification: Ordinary Chondrite (H4, S2, W4). | ||||||||||||||||||||||||||||||||||||||
Data from: MB100 Table 1 Line 1725: |
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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) | ||||||||||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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