1988 Compilation Report on Trace Elements in Six Anrt Rock Reference Samples: Diorite Dr‐n, Serpentine Ub‐n, Bauxite Bx‐n, Disthene Dt‐n, Granite Gs‐n and Potash Feldspar Fk‐n

The six ANRT rock reference samples (DR‐N, UB‐N, BX‐N, DT‐N, GS‐N, FK‐N) have been distributed as reference samples for nearly twenty years. All available data on trace elements in these samples are presented and evaluated. It has been possible to assign working values for nearly 40 trace elements. These samples prepared in 600 to 1300 kg quantities are expected to last for some decades to come.