TY  - RPRT
TI  - Age of native copper mineralization, Keweenaw Peninsula, Michigan
AU  - Theodore J. Bornhorst
AU  - James B. Paces
AU  - Norman K. Grant
AU  - J. Obradovich
AU  - N. King Huber
PY  - 1988
DO  - 10.2113/gsecongeo.83.3.619
UR  - https://pubs.usgs.gov/publication/70206764
ID  - 70206764
ER  -