once again...this question CANNOT be answered as is, it needs to
be more specific.
-are you asking about oral, demal or inhalation toxicity?
-are you asking about acute toxicity, chronic toxicity, or
carcinogenic toxicity?
-if asking about acute toxicity, are you asking about slightly
toxic, moderately toxic, or highly toxic?
-what is the context: mineral collection, stone carving, or
mining?