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Watson 021 | |||||||||||||||||||||||||||||||||||||||
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Basic information | Name: Watson 021 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2015 Country: Australia Mass: 135 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 2 Feb 2019 | ||||||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Watson 021 30°35’53.2"S, 131°35’05.3"E South Australia, Australia Find: 12 Apr 2015 Classification: Ordinary chondrite (L6) History: One fragment found by A. Langendam. Sub-sectioned for biology experiment in the field. Physical characteristics: Single stone found with large crack running down the middle, fusion crust remaining (~30%), which appears to have had chipped off in places. Petrography: (A. Tait, Monash U.) Sample has chondrules that are strongly equilibrated with the surrounding matrix, including POP, RP, PO types. Large plagioclase exhibit undulose extinction. Dihedral angles between plagioclase, olivine and pyroxene are consistently ~120 °. About 90% of the FeNi grains are oxidised, with many unoxidised troilite grains, and iron oxide veins transect the sample. Olivine shows undulose extinction and shock lamellae. Pockets exist of troilite-silicate melt emulsion (shock melting). Geochemistry: (A. Tait, Monash) EPMA analysis show olivine and pyroxene compositions are uniform: Olivine Fa24.3-25.2, mean = Fa24.6±0.3, n = 19; Low-Ca pyroxene Fs20.6-23.0Wo1.0-1.9, mean = Fs21.2±0.7Wo1.5±0.2, n = 16. Classification: Ordinary Chondrite (L6, S4, W4) Specimens: Main mass and one thin section curated at Monash. | ||||||||||||||||||||||||||||||||||||||
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: |
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: | |||||||||||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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