Lithic clasts in the Supuhee chondrite

Abstract

Bulk chemical analyses of three foreign lithic clasts from Supuhee, a shocked and brecciated H6 chondrite, were carried out in an attempt to locate 'mysterite', a volatile-rich material postulated to be present. Clast 1 bears some similarities to C1 and C2 chondrites, but its relatively low (less than 9.4%) volatile content suggests a different set of physicochemical conditions during low-temperature condensation. Clast 2 was apparently derived from H-group chondrite material by loss of metal and sulfide. Clast 3 is an unusual meteorite type whose chemical composition is reminiscent of the unique chondrite Kakangari (Graham, et al., 1977). These chemically distinct bodies were apparently not present during the metamorphic event which affected Supuhee. Although the presence of mysterite was not confirmed or refuted, the present results indicate that conditions were favorable for the formation, incorporation and preservation of volatile-rich materials.