Classification and Subgroups
Using the oxygen isotopic composition, meteoric iron composition and silicate composition pallasites are divided into 4 subgroups:
- Main group pallasites (PMG): Almost all pallasites
- Eagle Station grouplet (PES): 4 specimen known. They are related to IIF irons.
- Pyroxene Pallasite grouplet (PPX): Counts only Vermillion and Yamato 8451. They take their name from the high orthopyroxene content (about 5%). Metal matrix shows a fine octahedrite Widmanstätten pattern.
- Pallasite ungrouped (P-ung): Specimen that don't fit into any groups or grouplets
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