The Last Chance Vein, Cornucopia Mine is a lead, copper, gold, and silver mine located in Baker county, Oregon.
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:
Commodity: Lead, Copper, Gold, Silver
Lat, Long: 45.0225, -117.21694
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.
Last Chance Vein, Cornucopia Mine MRDS details
Site Name
Primary: Last Chance Vein, Cornucopia Mine
Secondary: Baker Mines Co.
Secondary: Mayflower Mine
Secondary: Granite Mtn Vein
Commodity
Primary: Lead
Primary: Copper
Primary: Gold
Primary: Silver
Tertiary: Arsenic
Tertiary: Tellurium
Tertiary: Zinc
Location
State: Oregon
County: Baker
District: Cornucopia
Land Status
Administrative Organization: Wallowa-Whitman National Forest
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Forest Industries Insurance Management Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Blue Mountain Section
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Galena
Ore: Hessite
Ore: Chalcopyrite
Ore: Petzite
Ore: Sylvanite
Ore: Tetrahedrite
Comments
Comment (Location): THE VEIN CROPS OUT AT ABOUT 7000 FT ELEV., ABOUT 2500 FT. HORIZONTALLY NW OF THE UNION-COMPANION VEIN AND ABOUT ONE AND A HALF MILES NW OF AND 3000 FT. ABOUT CORNUCOPIA TOWNSITE
Comment (Workings): THE VEIN HAS BEEN DEVELOPED AND MINED TO A DIP DEPTH OF 2000 FT BELOW THE OUTCROP
Comment (Geology): GRANODIORITE STOCK AND APLITE DIKES. VEIN IS MAINLY QUARTZ WITH LOCAL INCLUSIONS OF ALTERED HOST ROCKS AND GOUGE
Comment (Deposit): THE LAST CHANCE VEIN IS ONE OF SEVERAL VEINS WORKED BY THE CORNUCOPIA MINE. OTHERS INCLUDE THE WHITMAN, UNION-COMPANION, WALLINGFORD, AND VALLEY VIEW. MOST OF THE PRODUCTION WAS FROM THE UNION-COMPANION AND LAST CHANCE VEINS. ; INFO.SRC : 1 PUB LIT
References
Reference (Deposit): BROOKS, H.C., AND RAMP, L., 1968, GOLD AND SILVER IN OREGON: ODGMI BULL. 61, P. 89-90.
Reference (Deposit): GOODSPEED, G.E., 1939, GEOLOGY OF THE GOLD QUARTZ VEINS OF CORNUCOPIA: AIME TECH. PUB. 1035.
Reference (Deposit): SWARTLEY, A.M., 1914, ORE DEPOSITS IN NORTHEASTERN OREGON: OREGON BUREAU OF MINES AND GEOLOGY, MINERAL RESOURCES OF OREGON, V. 1, NO. 8, P. 49-53.
Reference (Deposit): WIESS, P.L., AND OTHERS, 1976, MINERAL RESOURCES OF THE EAGLE CAP WILDERNESS AND ADJACENT AREAS, OREGON: USGS BULL. 1385-E, P. 39-41.
Oregon Gold
"Where to Find Gold in Oregon" 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 Oregon. Read more: Where to Find Gold in Oregon.
