Commodities
PrimaryManganese
Commodity typeM
Deposit
Deposit sizeN
Ore controlOre Bodies Are Lens Shaped. Small Faults Offset The Ore Bodies. Manganese Minerals Occur As Oxides And Silicates In Red Limestones Which Is Interbedded In Basalt (Data From U.S.G.S. Mrds, 1990).
Materials
Ore mineralsBementite, Hausmannite
Geology
Host rockLimestone
Tectonic settingHost Rocks Of Manganese Deposits Of The Olympic Penninsula Formed At An Ocean Ridge Of 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 ID10055854
MRDS IDSP00053
Alternate namesPeacock, Johnnie M;
RegionNA
Data scoreC
Coordinates48.0809, -124.01101
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.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.