TY - BOOK ID - 138011526 TI - Precambrian deposits of zinc-copper-lead sulfides and zinc spinel (gahnite) in Colorado AU - Sheridan, Douglas M. AU - Raymond, William H. AU - Geological Survey (U.S.) PY - 1984 PB - [Reston, Va.] : Washington : Department of the Interior, United States Geological Survey, United States Government Printing Office. DB - UniCat KW - Sulfides KW - Geology, Stratigraphic KW - Geology KW - From 570 million to 5 billion years ago KW - Colorado. UR - https://www.unicat.be/uniCat?func=search&query=sysid:138011526 AB - ER -