TY  - RPRT
TI  - Rutile and topaz in Precambrian gneiss, Jefferson and Clear Creek Counties, Colorado
AU  - Douglas M. Sheridan
AU  - Richard B. Taylor
AU  - Sherman P. Marsh
PY  - 1968
DO  - 10.3133/cir567
UR  - https://pubs.usgs.gov/publication/cir567
ID  - cir567
ER  -