Trace element contents of selected Antarctic meteorites-II: Comparison with non-Antarctic specimens

We used radiochemical neutron activation analysis to determine Ag, As, Au, Bi, Cd, Co, Cs, Cu, Ga, In, Rb, Sb, Se, Te, Tl and Zn in interior portions of 5 Antarctic meteorites-ALHA76004 (LL3), ALHA77081 (Acapulco-like), ALHA77219 (mesosiderite?), ALHA77307 (C3V), ALHA78113 (aubrite)-and Acapulco chondrite. Where comparison is possible, all data for these weathering type A and B ALH meteorites and for 4 others agree well with data for corresponding non-Antarctic meteorites. These agreements are at least as good as those involving only non-Antarctic L6 falls demonstrating that type A and at least some type B ALH meteorites provide compositional data yielding important genetic information. As an example, compositions of Acapulco-like chondrites differ from that of a forsterite (F) chondritic inclusion in Cumberland Falls. Therefore, at least two chondritic groups occupy the compositional gap between E and H chondrites