Volatile Abundances and H Isotope Signature of Feldspathic Glass and Clinopyroxene in the Shergottites Zagami, EETA 79001, Shergotty, and ALHA 77005

Introduction: Volatile elements are of great geochemical importance because they influence a wide range of geological processes. Water and other volatiles play a significant role in partial melting processes in the source regions of magmas and in the eruption and crystallization of primary magmas. [1,2] investigated the volatile abundances and hydrogen isotope signatures of the nominally anhydrous minerals, melt inclusions, and glass in the nakhlites and chassignites (Chassigny and NWA 2737). They concluded that nominally anhydrous minerals is Martian meteorites contain trace amounts of OH and may constitutes the main H reservoir in the Martian interior. In this investigation, we extend our study to the shergottites, the most common group of Martian meteorites, and the more severely shocked.