Commodities
PrimaryGold
SecondarySilver
TertiaryThorium, Titanium, Metal, REE, Niobium (Columbium), Iron
Commodity typeM
Deposit
Deposit typePlacer
Model119: Placer Au-PGE
Deposit sizeS
Materials
Ore mineralsColumbite, Euxenite, Ilmenite, Magnetite, Rutile
Geology
Host rockSand and Gravel,Conglomerate · Unconsolidated Deposits--Alluvium;Cathedral Bluffs Member Of Wasatch Formation
Associated rockTrachyte,Basalt · Upper Tertiary Intrusive Rocks (Pliocene And Miocene)
StructureWashakie Basin
Tectonic settingColorado Platform
Economic & production
Development statusPast Producer
First production1892
Last production1940
Discovery year1891
Identification
Deposit ID10013454
MRDS IDD009749
Alternate namesFourmile District, Timberlake Creek District
RegionNA
Data scoreB
Coordinates40.85496, -107.68011
References
PARKER, B.H., JR., 1974, THE PLACERS OF MOFFAT COUNTY, IN GOLD PLACERS OF COLORADO: COLORADO SCHOOL OF MINES QUART., V. 69, NO. 4, P. 150-168.TWETO, OGDEN, 1976, GEOLOGIC MAP OF THE CRAIG 1X2 QUADRANGLE, NORTHWESTERN COLORADO: USGS MAP I-972SNOW, E.P., 1895, THE FOURMILE PLACER FIELDS OF (MOFFAT COUNTY), COLORADO AND WYOMING: ENG. MINING JOUR., V. 60, P. 102-105HOOVER, HERBERT C., 1897, GEOLOGY OF THE FOUR-MILE PLACER MINING DISTRICT (MOFFAT COUNTY), COLORADO: ENG. MINING JOUR., V. 63, P. 510MARKS, J.H., 1915, PRELIMINARY REPORT, THE TIMBERLAKE OR FOURMILE PLACER DISTRICT, MOFFAT COUNTY: COLORADO STATE PLAN. COMM. UNPUB. REPT., 9 P.GALE, H.S., 1908, GOLD PLACER DEPOSITS NEAR LAY, ROUTT COUNTY, COLORADO: USGS BULL. 340, P. 84-95.Dunn, L.G., 2003, Colorado Mining Districts--A Reference: Golden, Colo., Colorado School of Mines Library, p. 220-221.1932-40 FROM VANDERWILT, J.W., 1947, MINERAL RESOURCES OF COLORADO, P. 146; 1911-1931 FROM MINERAL RESOURCES OF THE U.S.