The Sweden Mine is a copper mine located in Skamania county, Washington at an elevation of 3,340 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: 3,340 Feet (1,018 Meters)
Commodity: Copper
Lat, Long: 46.29694, -122.11111
Map: View on Google Maps
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Sweden Mine MRDS details
Site Name
Primary: Sweden Mine
Secondary: Coe Mine
Secondary: St. Helens Mine
Secondary: Norway-Sweden Group
Commodity
Primary: Copper
Secondary: Gold
Secondary: Silver
Tertiary: Zinc
Location
State: Washington
County: Skamania
District: St. Helens District - Spirit Lake Area
Land Status
Land ownership: National Monument
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: In Mount St. Helens National Volcanic Monument In Gifford Pinchot National Forest
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Mount St. Helens Consolidated Mining Co.
Years: 1905 - 1943
Owner Name: New Cinch Uranium, Ltd., Toronto
Years: 1976 -
Production
Year: 1905
Material type: ORE CU
Description: Ap_Grade: ^Average 6.6% Cu, $286
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1905
Year Last Production: 1928
Discovery Year: 1896
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
Not available
Rocks
Name: Hornblendite
Role: Host
Age Type: Host Rock Unit
Age Young: Miocene
Name: Hornblendite
Role: Host
Age Type: Host Rock
Age Young: Miocene
Analytical Data
Analytical Data: WEIGHTED AVERAGE OF 4 SAMPLES: 2.8% CU ACROSS A 3.2 FT THICKNESS. WEIGHTED AVERAGE OF 5 SAMPLES AT DIFFERENT LOCALITY 3.21% CU ACROSS A 4.2 FT THICKNESS. NUMEROUS ASSAYS RAN 0.02-14.2% CU, TR-0.61 OZ/TON AU, NIL-3.80 OZ/TON AG. 12 USBM SAMPLES SHOWED 0.02-8.9% CU, TR AU, NIL-0.64 OZ/TON AG.
Materials
Ore: Sphalerite
Ore: Pyrite
Ore: Pyrrhotite
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Talc
Comments
Comment (Production): 2 CARLOADS OF ORE SHIPPED IN 1928. MOEN CITED 76 TONS OF PRODUCTION FOR BOTH 1927 AND 1929; HOWEVER, FROM THE WAY THE TEXT READS, IT APPEARS AS IF THIS REFERS TO THE SAME PRODUCTION AND POSSIBLY THE YEAR WAS MISTYPED IN THE TEXT
Comment (Workings): 2291 FT ADIT WITH 142 FT, 127 FT, AND 6 FT CROSSCUTS. THIS IS THE LONGEST ADIT IN SOUTHWESTERN WASHINGTON
Comment (Deposit): MINE IS IN THE AREA THAT WAS DEVASTATED DURING THE 1980 ERUPTION OF MOUNT ST. HELENS ; INFO.SRC : 1 PUB LIT
Comment (Location): BELOW LEVEL OF SPIRIT LAKE SUBSEQUENT TO 1980 ERUPTION OF MOUNT ST. HELENS. PROPERTY CONTAINS 8 CLAIMS
Comment (Deposit): DIMENSIONS ARE THOSE GIVEN BY LANDES AND OTHERS. FRACTURE ZONE IN GRANODIORITE, SEVERAL INCHES TO 6 FT THICK, CONSISTS OF GOUGE, TALC, GRANODIORITE FRAGMENTS, AND QUARTZ. IN INDIVIDUAL SHOOTS, PYRITE AND CHALCOPYRITE ARE THE PREDOMINANT ORE MINERALS, DISSEMINATED IN THE VEIN. VEIN CONTAINS 7 MAIN ORE SHOOTS
Comment (Commodity): METAL VALUES ARE HIGHLY VARIABLE ALONG STRIKE OF VEIN
Comment (Reserve-Resource): MOEN GIVES FURTHER DETAILS ABOUT RESERVE CALCULATIONS
Comment (Development): ONE OF A GROUP OF 29 CLAIMS PATENTED BY DR. H. W. COE IN 1905. BETWEEN 1900 AND 1910, MOUNT ST. HELENS CONSOLIDATED MINING CO. SPENT ABOUT $700,000 IN AN ATTEMPT TO MAKE THE SWEDEN A COPPER PRODUCING MINE.
References
Reference (Deposit): LANDES, HENRY, THYNG, W.S., LYON, D.A., ROBERTS, MILNOR, 1902, THE METALLIFEROUS RESOURCES OF WASHINGTON, EXCEPT IRON: WASHINGTON GEOLOGICAL SURVEY ANNUAL REPORT FOR 1901, V. I, PT. 2, P. 132-133.
Reference (Deposit): MOEN, W.S., 1977, ST. HELENS AND WASHOUGAL MINING DISTRICTS OF THE SOUTHERN CASCADES OF WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES INFORMATION CIRCULAR 60, P. 17, 33-37.
Reference (Deposit): 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. 340.
Reference (Production): MOEN, (1977), HUNTING, (1956)
Reference (Deposit): HUNTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 78.
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.
