Rutile and topaz in Precambrian gneiss, Jefferson and Clear Creek Counties, Colorado,
Sheridan, Douglas M., 1921-
Rutile and topaz in Precambrian gneiss, Jefferson and Clear Creek Counties, Colorado, by Douglas M. Sheridan, Richard B. Taylor, and Sherman P. Marsh. - Washington, 1968. - iii, 7 p. illus., map. 26 cm. - Geological Survey circular 567 . - Geological Survey circular ; 567. .
gs 68000264 //r935
Rutile--Colorado--Jefferson County.
Rutile--Colorado--Clear Creek County.
Topaz--Colorado--Jefferson County.
Topaz--Colorado--Clear Creek County.
Gneiss--Colorado--Jefferson County.
Gneiss--Colorado--Clear Creek County.
Geology, Stratigraphic--Precambrian.
QE75 / .C5 no. 567
549.5/24
Rutile and topaz in Precambrian gneiss, Jefferson and Clear Creek Counties, Colorado, by Douglas M. Sheridan, Richard B. Taylor, and Sherman P. Marsh. - Washington, 1968. - iii, 7 p. illus., map. 26 cm. - Geological Survey circular 567 . - Geological Survey circular ; 567. .
gs 68000264 //r935
Rutile--Colorado--Jefferson County.
Rutile--Colorado--Clear Creek County.
Topaz--Colorado--Jefferson County.
Topaz--Colorado--Clear Creek County.
Gneiss--Colorado--Jefferson County.
Gneiss--Colorado--Clear Creek County.
Geology, Stratigraphic--Precambrian.
QE75 / .C5 no. 567
549.5/24