Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites
Two Yamato meteorites collected in 1973 in Antarcica, Yamato-73-04 and Yamato-73-07, may be identified to an olivine-bronzite chondrite and a hypersthene achondrite respectively from their petrographic and chemical compositions. Magnetic analyses indicate that native irons in Yamato-73-04 chondrite...
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National Institute of Polar Research
1976
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ftnipr:oai:nipr.repo.nii.ac.jp:00000589 2023-05-15T13:47:58+02:00 Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites Takesi Nagata Naoji Sugiura F.C. Schwerer 1976-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=589 http://id.nii.ac.jp/1291/00000589/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=589&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research Geophysical Institute, University of Tokyo U.S. Steel Corporation Research Laboratory https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=589 http://id.nii.ac.jp/1291/00000589/ AA00733470 Memoirs of National Institute of Polar Research. Ser. C, Earth sciences, 10, 12-29(1976-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=589&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1976 ftnipr 2022-11-12T19:41:26Z Two Yamato meteorites collected in 1973 in Antarcica, Yamato-73-04 and Yamato-73-07, may be identified to an olivine-bronzite chondrite and a hypersthene achondrite respectively from their petrographic and chemical compositions. Magnetic analyses indicate that native irons in Yamato-73-04 chondrite comprise 2.6wt% of 7wt% Ni kamacite and 4.3wt% of 13wt% Ni kamacite, and that Yamato-73-07 achondrite contains 0.24wt% of Fe^0 with small amounts of Ni and Co and less than 0.02wt% of 60wt% Ni taenite or Fe_<3-x>Cr_xO_4. The natural remanent magnetization, NRM, of Yamato-73-07 achondrite can be distinctly separated into the original NRM of the undisturbed interior of 6.3×10^<-6> emu/gm in intensity and the secondary NRM of the surface skin fusion crust of about 0.5mm in thickness. The secondary NRM is attributable to the thermoremanent magnetization acquired in a magnetic field of 0.44 Oe-probably the geomagnetic field. Report Antarc* Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
Two Yamato meteorites collected in 1973 in Antarcica, Yamato-73-04 and Yamato-73-07, may be identified to an olivine-bronzite chondrite and a hypersthene achondrite respectively from their petrographic and chemical compositions. Magnetic analyses indicate that native irons in Yamato-73-04 chondrite comprise 2.6wt% of 7wt% Ni kamacite and 4.3wt% of 13wt% Ni kamacite, and that Yamato-73-07 achondrite contains 0.24wt% of Fe^0 with small amounts of Ni and Co and less than 0.02wt% of 60wt% Ni taenite or Fe_<3-x>Cr_xO_4. The natural remanent magnetization, NRM, of Yamato-73-07 achondrite can be distinctly separated into the original NRM of the undisturbed interior of 6.3×10^<-6> emu/gm in intensity and the secondary NRM of the surface skin fusion crust of about 0.5mm in thickness. The secondary NRM is attributable to the thermoremanent magnetization acquired in a magnetic field of 0.44 Oe-probably the geomagnetic field. |
format |
Report |
author |
Takesi Nagata Naoji Sugiura F.C. Schwerer |
spellingShingle |
Takesi Nagata Naoji Sugiura F.C. Schwerer Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites |
author_facet |
Takesi Nagata Naoji Sugiura F.C. Schwerer |
author_sort |
Takesi Nagata |
title |
Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites |
title_short |
Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites |
title_full |
Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites |
title_fullStr |
Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites |
title_full_unstemmed |
Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites |
title_sort |
magnetic properties of yamato-73-04 and yamato-73-07 meteorites |
publisher |
National Institute of Polar Research |
publishDate |
1976 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=589 http://id.nii.ac.jp/1291/00000589/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=589&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(35.583,35.583,-71.417,-71.417) |
geographic |
Yamato |
geographic_facet |
Yamato |
genre |
Antarc* Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=589 http://id.nii.ac.jp/1291/00000589/ AA00733470 Memoirs of National Institute of Polar Research. Ser. C, Earth sciences, 10, 12-29(1976-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=589&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248199247364096 |