Washington · Snohomish County
Occurrence

Helena Prospect

Snohomish County, Washington, United States
Copper
⌖ Show on mapUSGS source ↗
Commodities
PrimaryCopper
Commodity typeM
Deposit
Model85: Polymetallic veins
Deposit sizeN
WorkingsSurface/Underground
Orebody formVEIN
Materials
Ore mineralsBornite, Chalcopyrite, Pyrite
GangueCalcite, Quartz
Geology
Host rockDiorite · Index Batholith
Tectonic settingCascade Volcanic Arc
AlterationHost Rock Has Been Altered
Economic & production
Development statusOccurrence
Identification
Deposit ID10036933
MRDS IDM025906
RegionNA
Data scoreB
Coordinates47.83203, -121.53677
References
HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 85.BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPLERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY REPORT OF INVESTIGATIONS 6, P. 17.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.