Mine detail: Union-Companion Vein, Cornucopia Mine

Previously called 'Elk Creek Gold Mining CoRobert EmmetForest QueenRed Jacket'

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Location

Lat / long:

45.01236, -117.21435

Resource(M)

Primary:	Gold, Silver, Copper, Lead
Tertiary:	Arsenic, Zinc, Tellurium
Ore:	Chalcopyrite, Galena, Petzite, Pyrite, Sphalerite, Sylvanite

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Cornucopia Stock
Host type:	Diorite,Hornblendite
Associated type:	Diorite
Tectonic:	Accreted Island Arc And Post Volcanic Plutons

References

MRDS	M015647
DEP	10033330
Reference	{Deposit:: BROOKS, H.C, AND RAMP, L., 1968, GOLD AND SILVER IN OREGON: ODGMI BULL. 61, P. 89-90}{Deposit:: GODSPEED, G.E., 1939, GEOLOGY OF THE GOLD QUARTZ VEINS OF CORNUCOPIA: AMERICAN INST. MINING AND METALLURGICAL ENGINEERS TECH. PUB. 1035.}{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. 36-49.}{Deposit:: WIESS, P.L., AND OTHERS, 1976, MINERAL RESOURCES OF THE EAGLE CAP WILDERNESS AND ADJACENT AREAS, OREGON: USGS BULL. 1385-E, P. 35-45.}
Reporter	Brooks, Howard C., Gray, Jerry J.