TY - RPRT TI - Relationship of Precambrian quartzite-schist sequence along Coal Creek to Idaho Springs Formation, Front Range, Colorado AU - J. D. Wells AU - D. M. Sheridan AU - A. L. Albee PY - 1964 DO - 10.3133/pp454o UR - https://pubs.usgs.gov/publication/pp454O ID - pp454O ER -