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Watson 020 | |||||||||||||||||||||||||||||||||||||||
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Basic information | Name: Watson 020 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2015 Country: Australia Mass: 134 g | ||||||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 8876 approved meteorites (plus 5 unapproved names) classified as L5. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
Comments: | Approved 14 Mar 2017 | ||||||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Watson 020 30°33’49.9"S, 131°37’26.3" E South Australia, Australia Find: 11 Apr 2015 Classification: Ordinary chondrite (L5) History: Three broken fragments foundover an area of ~20 m2 by A. Tomkins. Sub-sectioned for biology experiment in the field. Physical characteristics: Three brown fragments with visible, well-formed chondrules on broken surfaces, minor fusion crust. Petrography: (S. Alkemade, Monash) Chondrules are readily defined in recrystallised matrix. Chondrule types include BO, RP, PO, PP, POP, C, Poikilitic chondrules. Mineralogy includes olivine crystals olivine, pyroxene, plagioclase, Fe-Ni metal, troilite. Metal and troilite. Olivine displays both sharp and undulose extinction, and irregular fractures. Minimal weathering of the sample has occurred with some metal grains exhibiting minor oxide rims (however most have none), small percentage of troilite is oxidised. No weathering veins are present. Geochemistry: (A. Tait, Monash) EPMA analysis show olivine and pyroxene compositions are uniform: Olivine Fa24.9-25.9, mean = Fa25.4±0.3, n = 17; Low-Ca pyroxene Fs20.9-26.0Wo1.2-2.0, mean = Fs21.7±1.1Wo1.6±0.2, n = 19. Classification: Ordinary Chondrite (L5, S1-S2, W1) Specimens: Fragments, Main mass and one thin section curated at Monash. | ||||||||||||||||||||||||||||||||||||||
Data from: MB106 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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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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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Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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