Effects of barite on aspects of the ecology of the ...
drilling, ambient barium concentrations of 1000 ppm in the sediments near a hardsubstrate drill site in south ern Santa Maria Basin (southern California, USA). At concentrations similar to those reported at drilling sites, barite is nontoxic to most organisms tested (Smith et al. 1982, NRC 1983, Carls Rice 1984, Macdonald et al. 1988).