B, Li and associated trace element chemistry of alteration minerals, Holes 597B and 597C ( DSDP, Leg 92, Pacific).

B, Li and other trace elements were analyzed in samples from 12 celadonite and smectite-rich veins from oxidative and non- oxidative alteration zones in basalts from Holes 597B and 597C. The oxidative alteration zones are characterized by celadonite and Fe- oxyhydroxide and conspicuously high K, Rb, and B concentrations. In contrast, the non-oxidative alteration zones are characterized by Mg-rich smectite (saponite), talc, and high Li concentrations. Neither B nor Li reaches high concentrations in high-Al high-Ti veins that appear to have formed by replacement of basalt. B, Li, and Rb enrichments in vein assemblages of low-temperature origin reflect an important removal mechanism from seawater for these species.-from Authors