Magnetic classification of meteorites (V) : Iron meteorites

Sixteen iron meteorites are magnetically classified into three major classes; hexahedrite plus Ni-poor ataxite, octahedrite and Ni-rich ataxite on the basis of their thermomagnetic characteristics. Magnetic parameters for the classification scheme are ratio of saturation magnetization of kamacite, I...

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Bibliographic Details
Main Author: Takesi Nagata
Format: Report
Language:English
Published: National Institute of Polar Research 1982
Subjects:
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1392
http://id.nii.ac.jp/1291/00001392/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1392&item_no=1&attribute_id=18&file_no=1
Description
Summary:Sixteen iron meteorites are magnetically classified into three major classes; hexahedrite plus Ni-poor ataxite, octahedrite and Ni-rich ataxite on the basis of their thermomagnetic characteristics. Magnetic parameters for the classification scheme are ratio of saturation magnetization of kamacite, I_s(α), to total saturation magnetization, I_s, namely I_s(α)/I_s, and transition temperature from γ-phase to α-phase of kamacite in the cooling process, Θ^*_<γ→α>. On an I_s(α)/I_s vs. Θ^*_<γ→α> diagram, the three major classes of iron meteorites are represented by their respective domains well separated from one another.