Commodities
PrimaryGold, Silver, Copper, Iron
Commodity typeM
Deposit
Deposit sizeN
Ore controlIron-Gold Mineralization Is Manto-Like And Occurs As Replacement Bodies In Limestone. One Of The Bodies Is 100ft. Long, 100ft. Wide, And 25ft. Thick. In Places The Ore Bodies Consist Of Nearly Pure Magnetite (Huntting, 1956, P. 52). Currently (1990), Some Of The Iron Bodies (Magnetite, Pyrite, Pyrrhotite) Are Being Mined For Gold (Tschauder, 1989, P. 245).
Materials
Ore mineralsChalcopyrite, Magnetite, Pyrite, Pyrrhotite
GangueChlorite, Sericite
Geology
Host rockArgillite,Siltstone,Limestone,Chert
Associated rockRhyodacite
Tectonic settingPermian-Triassic Metasedimentary And Metavolcanic Rocks Are Preserved In The Republic Graben East And Northeast Of Republic. They Are Locally Cut By Eocene Epizonal Plutons And Associated Sills And Dikes (Muessig, 1967, Geol. Map).
Economic & production
Development statusOccurrence
Identification
Deposit ID10093001
MRDS IDSP00081
Alternate namesCopper Key
RegionNA
Data scoreB
Coordinates48.71013, -118.55252
References
WDGER OFR 90-18BANCROFT, HOWLAND, 1914, THE ORE DEPOSITS OF NORTHEASTERN WASHINGTON; U.S. GEOLOGICAL SURVEY 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, 67 P.MUESSIG, SIEGFRIED, 1967, GEOLOGY OF THE REPUBLIC QUADRANGLE AND PART OF THE AENEAS QUADRANGLE, FERRY COUNTY, WASHINGTON: U.S. GEOLOGICAL SURVEY 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.