Commodities
PrimaryCopper, Gold, Silver, Tungsten
Commodity typeM
Deposit
Deposit sizeS
Ore controlLens-Shaped Ore Bodies Occur In Shear Zones In Granodiorite Of The Index Batholith (Huntting, 1956, P.81). Mafic Minerals Are Altered To Chlorite And Feldspars To Sericite And Kaolin (Patty, 1921, P. 291). Magnetite, Biotite, Hornblende, And Tourmaline Are Found Near The Margin Of The Batholith (Campbell, 1921, P. 5). No Veins Are Reported In The Host Rocks (Which Is Quartzite) To The Batholith.
Materials
Ore mineralsChalcopyrite, Hematite, Magnetite
GangueCalcite, Pyrite, Quartz
Geology
Host rockTonalite
StructureRocks Of The Area Include Various Accreted (Melange) Terranes And Batholithic Rocks Representing Early Igneous Activity Of The Cascade Magmatic Arc.
Economic & production
Development statusPast Producer
Identification
Deposit ID10056097
MRDS IDSP00358
Alternate namesBunker Hill
RegionNA
Data scoreB
Coordinates47.84842, -121.61427
References
BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY REPORT OF INVESTIGATIONS 6, 64 P., 1 PL.CAMPBELL, R.E., 1921, A GEOLOGICAL STUDY OF THE ORE BODIES OF THE COPPER BELLE MINE: UNIVERSITY OF WASHINGTON BACHELOR OF SCIENCE THESIS, 32 P.DERKEY, R.E.; JOSEPH, N.L.; LASMANIS, R., 1990, METAL MINES OF WASHINGTON-PRELIMINARY REPORT: STATE OF WASHINGTON, DEPARTMENT OF NATURAL RESOURCES, DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, 577 P.PATTY, E.N., 1921, THE METAL MINES OF WASHINGTON: WASHINGTON GEOLOGICAL SURVEY BULLETIN 23, 366 P.TABOR, R.W.; FRIZZELL, V.A., JR.; BOOTH, D.B.; WHETTEN, J.T.; WAITT, R.B.; 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, 31 P., 1 PL.