Last Chance Vein, Cornucopia Mine

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

Name: Last Chance Vein, Cornucopia Mine  

State:  Oregon

County:  Baker

Elevation:

Primary Mineral: 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.


Satelite image of the Last Chance Vein, Cornucopia Mine

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

"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 at Where to Find Gold in Oregon.