Commodities
PrimaryManganese
Commodity typeM
Deposit
Deposit sizeN
Ore controlMineralization Occurs As Lenses Near The Contact Between Basalt And Limestone (Data From U.S.G.S. Mrds, 1990). Manganese Deposits Of The Region Are Associated With Spilites (Park, 1942, P. 311-312) And Commonly Are Found With Reddish Pelagic Limestone Interbedded With The Basalt. Manganese Mineralization May Be Either Disseminated In Replacement Bodies Or Volcanogenic Exhalative/Diagenetic Bodies (Sorem And Gunn, 1967)
Geology
Host rockLimestone
Tectonic settingHost Rocks Of Manganese Deposits Of The Olympic Penninsula Formed At An Ocean Ridge Or In A Back Arc Basin At The Active Margin Of The North American Plate (Garrison, 1973; Snavely, 1987, P. 306-309).
Economic & production
Development statusOccurrence
Identification
Deposit ID10055852
MRDS IDSP00051
RegionNA
Data scoreB
Coordinates48.09285, -124.00018
References
WDGER OFR 90-18.GARRISON, R.E., 1973, SPACE-TIME RELATIONS OF PELAGIC LIMESTONES AND VOLCANIC ROCKS, OLYMPIC PENNINSULA, WASHINGTON: GEOLOGICAL SOCIETY OF AMERICA BULLETIN, V. 84, NO. 2, P. 583-594.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.MAGILL, E.A., 1960, MANGANESE DEPOSITS OF THE OLYMPIC PENNINSULA, WASHINGTON: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 5530, 82 P.PARK, C.F., JR., 1942, MANGANESE RESOURCES OF THE OLYMPIC PENNINSULA, WASHINGTON--A PRELIMINARY REPORT: U.S. GEOLOGICAL SURVEY BULLETIN 931-R, P. 435-457, 2 PL.PURDY, C.P., JR., 1954, DIRECTORY OF WASHINGTON MINING OPERATIONS, 1954: WASHINGTON DIVISION OF MINES AND GEOLOGY INFORMATION CIRCULAR 23, 73 P.SNAVELY, P.D., JR., 1987, TERTIARY GEOLOGIC FRAMEWORK, NEOTECTONICS, AND PETROLIUM POTENTIAL OF THE OREGON-WASHINGTON CONTINENTAL MARGIN. IN SCHOLL, D.W.; GRANTZ, ARTHUR; VEDDER, J.G., GEOLOGY AND RESOURCES POTENTIAL OF THE CONTINENTAL MARGIN OF WESTERN NORTH AMERICA AND ADJACENT OCEAN BASINS--BEAUFORT SEA TO BAJA CALIFORNIA: CIRCUM-PACIFIC COUNCIL FOR ENERGY AND MINERAL RESOURCES EARTH SCIENCE SERIES , V. 6, P. 305-335.SOREM, R.K.; GUNN, D.W., 1967, MINERALOGY OF MANGANESE DEPOSITS, OLYMPIC PENNINSULA, WASHINGTON: ECONOMIC GEOLOGY, V. 62, NO. 1, P. 22-56.