Commodities
PrimaryMolybdenum, Copper, Gold, Silver
TertiaryArsenic, Uranium, Tungsten
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formBRECCIA PIPE, STOCKWORK
Materials
Ore mineralsBornite, Brannerite, Chalcopyrite, Covellite, Molybdenite, Pyrite, Pyrrhotite, Scheelite
GangueBiotite, Chlorite, Magnetite, Plagioclase, Quartz, Sericite, Tourmaline
Geology
Host rockTonalite · Snoqualmie Batholith, Northern Phase;Snoqualmie Batholith, Northern Phase
StructureStrong E-W Sheeting
Tectonic settingCascade Volcanic Arc
AlterationPotassic, Propylitic, Silica Flooding
Economic & production
Development statusPast Producer
Production years1942, 1953-1955
Identification
Deposit ID10008481
MRDS IDD000663
Alternate namesRainy, Western States Copper
RegionNA
Data scoreB
Coordinates47.57037, -121.55564
References
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. 119.GRANT, A.R., 1969, CHEMICAL AND PHYSICAL CONTROLS FOR BASE METAL DEPOSITION IN THE CASCADE RANGE OF WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 58, P. 80-81.GRANT, A.R., 1976, REPORT OF EVALUATION, MINERAL RESOURCE ANALYSIS STUDY ON UNITED STATES FOREST SERVICE LAND, STATE OF WASHINGTON: PREPARED FOR U.S. FOREST SERVICE - REGION 6, CONTRACT NO. 004724N, P. 45.TABOR, R.W., FRIZZELL, V.A., JR., BOOTH, D.B., WHETTEN, J.T., WAITT, R.B., JR., AND ZARTMAN, R.E., 1982, PRELIMINARY GEOLOGIC MAP OF THE SKYKOMISH RIVER 1:100,000 QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-747, SCALE 1:100,000.CHURCH, S.E., LEHURAY, A.P., GRANT, A.R., DELEVAUX, M.H., AND GRAY, J.E., 1986, LEAD-ISOTOPIC DATA FROM SULFIDE MINERALS FROM THE CASCADE RANGE, OREGON AND WASHINGTON: GEOCHIMICA ET COSMOCHIMICA ACTA, V. 50, P. 317-328.GRANT, 1976