The Helena Prospect is a copper mine located in Snohomish county, Washington at an elevation of 2,500 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 2,500 Feet (762 Meters)
Commodity: Copper
Lat, Long: 47.83222, -121.53556
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Helena Prospect MRDS details
Site Name
Primary: Helena Prospect
Commodity
Primary: Copper
Location
State: Washington
County: Snohomish
District: Index District
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Cornwall, William
Home Office: Index, Wa.
Years: 1912 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Northern Cascade Mountains
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Form: VEIN
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Host Rock Has Been Altered
Rocks
Name: Diorite
Role: Host
Age Type: Host Rock Unit
Age Young: Oligocene
Name: Diorite
Role: Host
Age Type: Host Rock
Age Young: Oligocene
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Bornite
Ore: Chalcopyrite
Gangue: Calcite
Gangue: Quartz
Comments
Comment (Location): NEAR NATIONAL FOREST BOUNDARY BUT OUTSIDE OF FOREST
Comment (Deposit): 4-FT-WIDE SHEAR ZONE CONSISTS OF 1-IN.-WIDE SULFIDE BANDS ALTERNATING WITH GRANODIORITE
Comment (Workings): 3 ADITS
References
Reference (Deposit): 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.
Reference (Deposit): HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 85.
Reference (Deposit): BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPLERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY REPORT OF INVESTIGATIONS 6, P. 17.
Washington Gold
"Where to Find Gold in Washington" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Arizona. Read more: Where to Find Gold in Washington.
