Oregon · Douglas County
Producer

Riddle Mine

Douglas County, Oregon, United States
NickelIronCobalt
⌖ Show on mapUSGS source ↗
Commodities
PrimaryNickel, Iron, Cobalt
Commodity typeM
Deposit
Deposit sizeY
Ore controlLaterite, Fractures
Geology
Host rockPeridotite,Serpentinite
StructureTropical Weathering Of Ultramafic Rocks
Tectonic settingOrogenic Belt
AlterationLaterization
Economic & production
Development statusProducer
First production1954
Last production1983
Discovery year1864
Identification
Deposit ID10024510
MRDS IDISM0232
Alternate namesNickel Mountain
RegionNA
Data scoreB
Coordinates42.96371, -123.44338
References
GUSTAFSON, J.R., 1958, THE RIDDLE NICKEL PROJECT: PAPER PRESENTED AT AMERICAN INSTITUTE OF MINING, METALLURGICAL -AND PETROLEUM ENGINEERS SOUTHERN CALIFORNIA SECTION MEETING. -(RR1)ROWE, W.A., MEJIA, V.M., CUMBERLIDGE, J.T., AND MATTSON, L.A., 1976, GEOLOGY OF THE NICKEL MOUNTAIN MINE, RIDDLE, -OREGON, IN WEISS, ALFRED. ED., WORLD MINING AND METALS TECHNOL-OGY, PROCEEDINGS OF THE JOINT MMIJ-AIME MEETING, DENVER, COLO.-, P. 25-46.CHACE, F.M., CUMBERLIDGE, J.T., CAMERON, S.L., AND VAN NORT, S.D., 1969, APPLIED GEOLOGY AT THE NICKEL MOUNTAIN MI-NE, RIDDLE, OREGON: ECONOMIC GEOLOGY, V. 64, NO. 1, P. 1-16.U.S. BUREAU OF MINES, 1955-1981, MINERALS YEARBOOK (NICKEL CHAPTER): WASHINGTON, D.C., U.S. GOVERNMENT PRINTING OF-FICE. (A2-PA4, PC1)SIBLEY, S.F., 1983, NICKEL, IN U.S. BUREAU OF MINES, MINERAL COMMODITY SUMMARIES--1982, P. 106-107. (PA1, PC1)PETERS, H., 1984, HANNA NICKEL TRIES AGAIN: METAL BULLETIN MONTHLY, NO. 161 [MAY], P. 51-59. (PA8)PA1: RF5, P. 107; PA2-PA4: RF4, 1972-81; PA8: RF6. PC1: RF4, 1955-1981; RF5, P. 107.