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| O'Malley 024 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: O'Malley 024 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2015 Country: Australia Mass:  8.8 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 6826 approved meteorites (plus 6 unapproved names) classified as H6. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 23 Jan 2019 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 108:
O’Malley 024 30°41’28.7"S, 131°03’38.2"E South Australia, Australia Find: 8 Apr 2015 Classification: Ordinary chondrite (H6) History: Two jig-saw fitting pieces found by A. Tait Physical characteristics: Two fragments representing 60% of the total stone. Petrography: (S. Alkemade, Monash) Chondrules (0.2 - 1.0 mm diameter) have indistinct edges, in a strongly recrystallized matrix. Relict chondrules types include BO, RP, POP, cryptocrystalline and poikilitic. Mineralogy includes olivine, pyroxene, plagioclase, abundant Fe-Ni metal and troilite. Undulatory extinction and irregular fractures are exhibited in the majority of olivine grains with minor planar fractures in few grains. Approx 40-50% Fe-Ni metal and troilite is oxidised. Geochemistry: (S. Alkemade) FEG-SEM analysis shows that olivine and pyroxene compositions are uniform: Olivine Fa18.3-19.2, mean = Fa18.8, std = 0.33, n = 5; Low-Ca pyroxene Fs16.0-17.2, mean = Fa16.6, std = 0.45, n = 5. Classification: Ordinary Chondrite (H6, S2, W2) | ||||||||||||||||||||||||||||||||||||
| Data from: MB108 Table 0 Line 0: |
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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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography:
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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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