Commodities
PrimaryGold, Silver, Copper, Iron
Commodity typeM
Deposit
Deposit sizeN
Ore controlGold And Silver Mineralization At The Overlook Deposit Occurs In Manto-Like Replacement Bodies Of Magnetite, Pyrite, And Pyyrrhotite In Limestone And As Disseminated And Stockwork Bodies Overlying The Massive, Iron-Rich Horizon In The Limestone. Currently (1990), This Deposit Is Being Mined For Its Gold-Silver Mineralization (Tschauder, 1989, P. 245).
Materials
Ore mineralsChalcopyrite, Magnetite, Pyrite, Pyrrhotite
GangueChlorite, Sericite
Geology
Host rockArgillite,Siltstone,Limestone,Chert
Associated rockRhyodacite
Tectonic settingEocene Felsic Rocks Intruded Permian-Triassic Metasedimentary And Metavolcanic Rocks Of The Republic Graben (Muessig, 1967, Geol. Map).
Economic & production
Development statusOccurrence
Identification
Deposit ID10055890
MRDS IDSP00098
RegionNA
Data scoreB
Coordinates48.69874, -118.57002
References
WDGER OFR 90-18BANCROFT, HOWLAND, 1914, THE ORE DEPOSITS OF NORTHEASTERN WASHINGTON: U.S.G.S. BULLETIN 550, 215 P.GLOVER, S.L., 1942, WASHINGTON IRON ORES, A SUMMARY REPORT: WASHINGTON DIVISION OF MINES AND MINING REPORT OF INVESTIGATIONS 2., 23 P.HUNTTING, M.T., 1956,INVENTORY OF WASHINGTON MINERALS-PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, 428 P.; V. 2. 67P.JOSEPH, N.L., 1990, MINERAL INDUSTRY NEWS NOTES:WASHINGTON GEOLOGIC NEWSLETTER, V. 18, NO. 2, P. 19-20.MUESSIG, SIEGFRIED, 1967, GEOLOGY OF THE REPUBLIC QUAD. AND PART OF THE AENEAS QUAD., FERRY COUNTY, WASHINGTON: U.S.G.S. BULLETIN 1216, 135 P., 1 PL.SHEDD, SOLON; JENKINS,O.P.;COOPER,H.H., 1922, IRON ORES, FUELS, AND FLUXES OF WASHINGTON: WASHINGTON DIVISION OF GEOLOGY BULLETIN 27, 160 P., 1 PL.TSCHAUDER, R.J., 1989, GOLD DEPOSITS IN NORTHERN FERRY COUNTY, WASHINGTON. IN JOSEPH N.L. AND OTHERS; EDITORS, GEOLOGIC GUIDEBOOK FOR WASHINGTON AND ADJACENT AREAS: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES INFORMATION CIRCULAR 86, P. 241-253.