Type Stony-iron Total known specimens 2 | Class Pallasite | |
Composition Meteoric iron, silicate minerals (Pyroxene) | ||
The pyroxene pallasite grouplet is a subdivision of the pallasite meteorites (stony-irons).
The grouplet is named "pyroxene pallasites" because they are the only pallasites that contain pyroxene. The grouplet was proposed in 1995. It currently has only 2 members: the Vermillion and Yamato 8451 meteorite. Both meteorites contain pyroxene and have a number of other similarities: for example their pyroxene composition, rare earth element concentrations, and oxygen isotope ratios. However, there are also indicators against the grouping of these two meteorites: for example the texture and occurrence of cohenite in the Vermillion meteorite and the differing siderophile trace element concentrations.
References
Pyroxene pallasite grouplet Wikipedia(Text) CC BY-SA