TY - RPRT TI - Gold enrichment and the Bi-Au association in pyrrhotite-rich massive sulfide deposits, Escanaba trough, Southern Gorda Ridge AU - T.O. Tormanen AU - R.A. Koski PY - 2005 DO - 10.2113/100.6.1135 UR - https://pubs.usgs.gov/publication/70027996 ID - 70027996 ER -