The relative INAA method under statistical control was used to measure the
concentrations of Sb, La, Eu, Co, Rb, Tb, Cs, Hf, Th, Cr, Lu, Yb, Ce, Sm, G
d, Nd. Rare earth element (REE) Chondrite-normalized patterns are presented
. The La-cond/Lu-cond normalized concentration ratios obtained confirm the
carbonaceous character of the rocks. (C) 2000 Elsevier Science Ltd. All rig
hts reserved.