Yamato-791197: A volatile trace element rich lunar highlands sample from Antarctica

Abstract

Neutron activation analysis of Ag, Au, Bi, Cd, Co, Cs, Ga, In, Rb, Sb, Se, Te, Tl, U and Zn in Yamato-791197 reveals that many elements are enriched and heterogeneously distributed compared with Allan Hills A81005. While both samples derive from the lunar highlands, perhaps the same region, they were never part of the same rock. Trace element contents in Y-791197 resemble those in Apollo 66095 ("Rusty Rock"), a unique sample rich in condensed lunar volcanic exhalation.