Commodities
PrimaryUranium, Copper
SecondaryZinc
TertiaryBismuth, Lead, Silver
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeN
Ore controlNe-Trending Breccia Reef-Related Fracture In Favorable Hornblende Gneiss
Materials
Ore mineralsBornite, Chalcocite, Chalcopyrite, Pitchblende, Sphalerite, Tennantite
GangueAnkerite, Calcite, Chlorite, Hematite
Geology
Host rockGneiss · Idaho Springs Formation-Hornblende Gneiss Unit
Associated rockPegmatite · Granitic Pegmatite
StructureFront Range Uplift, Denver Basin, Hurricane Hill Fault System
Tectonic settingCentral Cordillera (Southern Rocky Mts.)
AlterationReplacement Of Fragments In The Breccia By K-Feldspar Or Ankerite
Economic & production
Development statusOccurrence
Identification
Deposit ID10087813
MRDS IDD010151
Alternate namesUnion Pacific Prospect
RegionNA
Data scoreB
Coordinates39.77027, -105.26641
References
NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULL. 40, P. 195SHERIDAN, DOUGLAS M. AND OTHERS, 1967, GEOLOGY AND URANIUM DEPOSITS OF THE RALSTON BUTTES DISTRICT, JEFFERSON COUNTY, COLORADO: USGS PROF. PAPER 520.ADAMS, J.W., AND STUGARD, FREDERICK, JR., 1956, WALL-ROCK CONTROL OF CERTAIN PITCHBLENDE DEPOSITS IN GOLDEN GATE CANYON, JEFFERSON COUNTY, COLORADO: USGS BULL. 1030-G.ADAMS, J.W., AND OTHERS, 1953, URANIUM OCCURRENCES IN THE GOLDEN GATE CANYON AND RALSTON CREEK AREAS, JEFFERSON COUNTY, COLORADO: USGS CIRC. 320