TY - RPRT TI - Maps showing mineral resource assessment for skarn deposits of gold, silver, copper, tungsten, and iron in the Butte 1 degree by 2 degrees Quadrangle, Montana AU - J. E. Elliott AU - C. A. Wallace AU - G. K. Lee AU - J.C. Antweiler AU - D. J. Lidke AU - L. C. Rowan AU - W. F. Hanna AU - C. M. Trautwein AU - John L. Dwyer AU - S. H. Moll PY - 1992 DO - 10.3133/i2050e UR - https://pubs.usgs.gov/publication/i2050E ID - i2050E ER -