Magnetic analysis of an Antarctic mesosiderite, ALH-77219
Magnetic analyses are made on an Antarctic mesosiderite ALH-77219,and chemical analyses of metallic grains in the mesosiderite are carried out with the aid of an EPMA. The EPMA analyses show that the metallic phases in ALH-77219 are composed of kamacite of 5-6wt% Ni and taenite of about 50wt% Ni. Th...
| Main Authors: | , |
|---|---|
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
National Institute of Polar Research
1983
|
| Subjects: | |
| Online Access: | https://doi.org/10.15094/00008363 https://doaj.org/article/72a9dd43cda94b8b816f3c8dc835d570 |
| Summary: | Magnetic analyses are made on an Antarctic mesosiderite ALH-77219,and chemical analyses of metallic grains in the mesosiderite are carried out with the aid of an EPMA. The EPMA analyses show that the metallic phases in ALH-77219 are composed of kamacite of 5-6wt% Ni and taenite of about 50wt% Ni. The thermomagnetic analyses show that the mesosiderite ALH-77219 contains kamacite phase of about 6wt% Ni on average of 19.3% in weight and taenite phase of about 54wt% Ni on average of 6.3% in weight. The major parts of the taenite phase are of the superlattice structure of tetrataenite, which has a large magnetic anisotropy. |
|---|