Magnetic properties of Ni-rich iron meteorites
6 Ni-rich ataxites (25.6-35.5 wt% in Ni-content) are magnetically analyzed. These Ni-rich ataxites can be classified into 3 groups on the basis of the structure consisting of the major Fe-Ni phases; i. e., (1) ordinary taenite phase (ferromagnetic and paramagnetic γ-phases) only, (Yamato-791694 and...
| Main Authors: | , , |
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| Format: | Report |
| Language: | English |
| Published: |
National Institute of Polar Research
1987
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| Subjects: | |
| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2139 http://id.nii.ac.jp/1291/00002139/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2139&item_no=1&attribute_id=18&file_no=1 |
| Summary: | 6 Ni-rich ataxites (25.6-35.5 wt% in Ni-content) are magnetically analyzed. These Ni-rich ataxites can be classified into 3 groups on the basis of the structure consisting of the major Fe-Ni phases; i. e., (1) ordinary taenite phase (ferromagnetic and paramagnetic γ-phases) only, (Yamato-791694 and the Lime Creek), (2) γ-phase plus tetrataenite (γ'-phase), (the Santa Catharina), and (3) γ-phase plus γ'-phase plus martensitic Fe-Ni metal (α_2-phase), (the Twin City and the San Cristobal). The Tishomingo Ni-rich ataxite has an anomalous structure, which may belong to either group (2) or group (3). Taenite lamellae of 2 octahedrites (the Toluca and the Itutinga) are also magnetically analyzed. These taenite lamellae have the structure of group (2). |
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