Sulfur and Rhenium-Osmium-Isotopic Systematics in Precambrian Seafloor Massive Sulfides McCandless, T. E. ; Mathur, R. D. ; Ruiz, J. ; Kontinen, A. Abstract Publication: Ninth Annual V. M. Goldschmidt Conference Pub Date: August 1999 Bibcode: 1999nag..conf.7507M