Metallographic Properties of Yamato Iron Meteorite, Yamato-75031, and Stony-Iron Meteorite, Yamato-74044
Chemical and metallographic examination of Yamato iron meteorite, Yamato-75031,has revealed that the major elements in the iron base are 15.3% Ni, 1% P, and 0.76% Co. Very large Fe-Ni phosphides (schreibersite) are enveloped with swathing kamacite and very fine phosphides are also encased in Widmans...
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U.S. Steel Research Laboratory
1978
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ftnipr:oai:nipr.repo.nii.ac.jp:00000895 2023-05-15T17:10:58+02:00 Metallographic Properties of Yamato Iron Meteorite, Yamato-75031, and Stony-Iron Meteorite, Yamato-74044 R.M. Fisher C.E. Jr. Spangler T. Nagata 1978-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=895 http://id.nii.ac.jp/1291/00000895/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=895&item_no=1&attribute_id=18&file_no=1 en eng U.S. Steel Research Laboratory National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=895 http://id.nii.ac.jp/1291/00000895/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 8, 248-259(1978-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=895&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1978 ftnipr 2022-11-12T19:41:42Z Chemical and metallographic examination of Yamato iron meteorite, Yamato-75031,has revealed that the major elements in the iron base are 15.3% Ni, 1% P, and 0.76% Co. Very large Fe-Ni phosphides (schreibersite) are enveloped with swathing kamacite and very fine phosphides are also encased in Widmanstatten kamacite plates within a plessite matrix. The composition and microstructure are quite similar to Pinon which is classified as an anomalous high nickel ataxite. Some annealing of the plessite occurred during entry into the earth's atmosphere. Chemical and metallographic examination of Yamato stony-iron meteorite, Yamato-74044,has revealed that the major elements in the metal phase are 11% Ni, 0.1% P, 0.75% Co with adjacent pools of manganese-rich olivine veined with iron sulphide. The olivine component and the nickel content classify this stony iron as a pallasite. The nickel contents of the taenite and plessite indicate chemical equilibrium during cooling to 400℃. These samples, along with Yamato-75105,weighing from 20-60 grams, are smaller than any other iron or stony-iron meteorites. Report 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 |
Chemical and metallographic examination of Yamato iron meteorite, Yamato-75031,has revealed that the major elements in the iron base are 15.3% Ni, 1% P, and 0.76% Co. Very large Fe-Ni phosphides (schreibersite) are enveloped with swathing kamacite and very fine phosphides are also encased in Widmanstatten kamacite plates within a plessite matrix. The composition and microstructure are quite similar to Pinon which is classified as an anomalous high nickel ataxite. Some annealing of the plessite occurred during entry into the earth's atmosphere. Chemical and metallographic examination of Yamato stony-iron meteorite, Yamato-74044,has revealed that the major elements in the metal phase are 11% Ni, 0.1% P, 0.75% Co with adjacent pools of manganese-rich olivine veined with iron sulphide. The olivine component and the nickel content classify this stony iron as a pallasite. The nickel contents of the taenite and plessite indicate chemical equilibrium during cooling to 400℃. These samples, along with Yamato-75105,weighing from 20-60 grams, are smaller than any other iron or stony-iron meteorites. |
format |
Report |
author |
R.M. Fisher C.E. Jr. Spangler T. Nagata |
spellingShingle |
R.M. Fisher C.E. Jr. Spangler T. Nagata Metallographic Properties of Yamato Iron Meteorite, Yamato-75031, and Stony-Iron Meteorite, Yamato-74044 |
author_facet |
R.M. Fisher C.E. Jr. Spangler T. Nagata |
author_sort |
R.M. Fisher |
title |
Metallographic Properties of Yamato Iron Meteorite, Yamato-75031, and Stony-Iron Meteorite, Yamato-74044 |
title_short |
Metallographic Properties of Yamato Iron Meteorite, Yamato-75031, and Stony-Iron Meteorite, Yamato-74044 |
title_full |
Metallographic Properties of Yamato Iron Meteorite, Yamato-75031, and Stony-Iron Meteorite, Yamato-74044 |
title_fullStr |
Metallographic Properties of Yamato Iron Meteorite, Yamato-75031, and Stony-Iron Meteorite, Yamato-74044 |
title_full_unstemmed |
Metallographic Properties of Yamato Iron Meteorite, Yamato-75031, and Stony-Iron Meteorite, Yamato-74044 |
title_sort |
metallographic properties of yamato iron meteorite, yamato-75031, and stony-iron meteorite, yamato-74044 |
publisher |
U.S. Steel Research Laboratory |
publishDate |
1978 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=895 http://id.nii.ac.jp/1291/00000895/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=895&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 |
Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=895 http://id.nii.ac.jp/1291/00000895/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 8, 248-259(1978-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=895&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766067719732461568 |