The Dichotomous HED Meteorite Suite

Abstract

The howardite, eucrite and diogenite (HED) clan is the largest suite of crustal rocks available from a differentiated asteroid. Attempts to unravel the petrogenetic history of the HED parent body have tacitly assumed that the suite is representative of the crust, and thus can be used to understand the differentiation history of the entire parent body. This assumption is a holdover from a time when we knew little about the HED parent body. Much has changed. Is this assumption still valid? HED Geochemistry: The HED suite is composed