Arsenopyrite in the bank deposits of the Whitewood Creek-Belle Fourche-Cheyenne River-Lake Oahe system, South Dakota, U.S.A.

Comment on “Phase Associations and Mobilization of Iron and Trace Elements in Coeur d'Alene Lake, Idaho”

“…However, as with the surface samples, aliquots from selected trace element-rich layers were subjected to heavy mineral flotations. This was deemed acceptable because even long-term (tens to hundreds of years) sulfide exposure to an oxidizing environment only leads to limited surficial oxidation without affecting the underlying mineralogy (16). With the exception of one core (no.…”