Commodities
PrimaryCopper
SecondaryGold, Silver
Commodity typeM
Deposit
Model53: Porphyry Cu
Deposit sizeN
Orebody formDISSEMINATED AND IN NARROW VEINLETS
Materials
Ore mineralsChalcocite, Chalcopyrite, Pyrite
Geology
Host rockRhyolite · Ohanapecosh Formation;Ohanapecosh Formation;Bumping Lake Pluton
Tectonic settingCascade Volcanic Arc
AlterationGranodiorite Sericitized, Silicified; Rhyolite Heavily Stained By Fe-Oxides
Economic & production
Development statusOccurrence
Discovery year1895
Identification
Deposit ID10048445
MRDS IDMP00032
Alternate namesAmerican River, Morse-Union
RegionNA
Data scoreB
Coordinates46.87899, -121.41535
References
HOLLISTER, V.F., 1979, PORPHYRY COPPER-TYPE DEPOSITS OF THE CASCADE VOLCANIC ARC, WASHINGTON: MINERALS SCIENCE AND ENGINEERING, V. 11, P. 34.SIMMONS, G.C., VAN NOY, R.M., AND ZILKA, N.T., 1983, MINERAL RESOURCES OF THE COUGAR LAKES-MOUNT AIX STUDY AREA, YAKIMA AND LEWIS COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY BULLETIN 1504, P. 54-55.