TY - RPRT TI - Constraints on the timing of Co-Cu ± Au mineralization in the Blackbird district, Idaho, using SHRIMP U-Pb ages of monazite and xenotime plus zircon ages of related Mesoproterozoic orthogneisses and metasedimentary rocks AU - John N. Aleinikoff AU - John F. Slack AU - Karen Lund AU - Karl V. Evans AU - C. Mark Fanning AU - Frank K. Mazdab AU - Joseph L. Wooden AU - Renee M. Pillers PY - 2012 DO - 10.2113/econgeo.107.6.1143 UR - https://pubs.usgs.gov/publication/70044818 ID - 70044818 ER -