Commodities
PrimaryManganese, Copper
TertiaryZinc, Magnesite, Cobalt, Nickel, Silver
Commodity typeM
Deposit
Model100: Volcanogenic Mn, Olympic Peninsula
Deposit sizeS
WorkingsSurface/Underground
Orebody formLENSES (PINCH AND SWELL)
Ore controlAltered Basalt-Sandstone Contact
Materials
Ore mineralsBementite, Chalcocite, Copper, Cuprite, Malachite, Rhodochrosite, Rhodonite
GangueJasper
Geology
Host rockSandstone
Tectonic settingActive Margin (Leading Edge Of North American Plate)
Economic & production
Development statusPast Producer
Identification
Deposit ID10088849
MRDS IDM700283
Alternate namesThree Friends Claim
RegionNA
Data scoreB
Coordinates47.57423, -123.34626
References
HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 61-62.MAGILL, E.A., 1960, MANGANESE DEPOSITS OF THE OLYMPIC PENINSULA, WASH.: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 5530, P. 62-64, 77.GREEN, S.H., 1945, MANGANESE DEPOSITS OF THE OLYMPIC PENINSULA, WASHINGTON: WASHINGTON DIVISION OF MINES AND MINING REPORT OF INVESTIGATIONS 7, P. 40-41.DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 158.MAGILL, 1960