Commodities
PrimaryCopper, Gold, Silver
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formLENS, EGG
Ore controlMineralization Is Grossly Confined To The Center Of A Folded Laharic Unit Although There Is Stockwork Mineralization In Associated Rhyolitic Pyroclastic Rocks.
Materials
Ore mineralsChalcopyrite, Pyrite, Sphalerite, Tetrahedrite
GangueChlorite, Quartz
Geology
Host rockGreenstone,Dacite,Andesite · Elkhorn Ridge Argillite;Elkhorn Ridge Argillite
Associated rockGabbro · Wallowa Batholith Satellite Intrusions;Elkhorn Ridge Argillite;Elkhorn Ridge Argillite;Elkhorn Ridge Argillite;Elkhorn Ridge Argillite;Elkhorn Ridge Argillite
StructureNe Trending Blue Mountains Uplift, Near-Horizontal Fault In Lowest Workings
Tectonic settingAcrreted Island Arc/Seven Devils Volcanics
AlterationSilicification Of Greenstones
Economic & production
Development statusPast Producer
Production years1908-1934
Discovery year1897
Identification
Deposit ID10069102
MRDS IDW002495
RegionNA
Data scoreB
Coordinates45.02569, -116.85018
References
BROOKS, H. C., AND RAMP, L., 1968, GOLD AND SILVER IN OREGON: OREGON DEPT. OF GEOL. AND MIN. INDUSTRIES BULL. 61, P. 93, 100OREGON DEPT. OF GEOL. AND MIN. INDUSTRIES, 1939, OREGON METAL MINES HANDBOOK; NORTHEASTERN OREGON, EAST HALF: BULL. 14-A, P. 60FREDERICKSEN, R., GALLAGHER, T.P., AND JUHAS, A.P., 1976, PRECIOUS AND BASE METAL MINERALIZATION AT THE IRON DIKE AND RED LEDGE DEPOSITS (ABS.): PAPER PRESENTED TO THE ANNUAL CONVENTION OFBROOKS, H.C. AND OTHERS, 1981, MAP OF THE GEOLOGY AND GOLD DEPOSITS OF THE BOURNE QUADRANGLE, BAKER AND GRANT COUNTIES, OREGON; ODGMI MAP GMS-19OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES, 1977, SUMMARY REPORT ON THE IRON DIKE MINE: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES.1901 RECON LINDGREN1914 ORE. BUREAU OF MINES, GEOL.1916 ORE. BUREAU OF MINES. GEOL.1968 COMPILE ORE. DEPT. GEOL. MIN. IND.BROOKS AND RAMP, 1968, P. 94PRESS RELEASE, BAKER, OR. RECORD COURIER, 3-22-79