The Yankee Mine is a silver, lead, and gold mine located in Utah county, Utah at an elevation of 9,140 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: 9,140 Feet (2,786 Meters)
Commodity: Silver, Lead, Gold
Lat, Long: 40.54361, -111.63250
Map: View on Google Maps
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Yankee Mine MRDS details
Site Name
Primary: Yankee Mine
Secondary: Live Yankee
Secondary: Belorophan
Secondary: Mary Ellen
Secondary: West Extension
Commodity
Primary: Silver
Primary: Lead
Primary: Gold
Secondary: Copper
Secondary: Zinc
Location
State: Utah
County: Utah
District: American Fork District
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Asarco (American Smelting And Refining Co.)
Production
Year: 1880
Time Period: 1880
Material type: ORE
Description: Cp_Grade: ^18 Oz/Ton Ag, 7% Pb $4/Ton Au
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1880
Year Last Production: 1959
Discovery Year: 1880
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Middle Rocky Mountains
Physiographic Detail: Wasatch Mountains
Mineral Deposit Model
Not available
Orebody
Form: BLANKET, TABULAR, TABULAR
Structure
Type: R
Description: On South Limb Of Uinta Arch, East Of Wasatch Fault
Type: L
Description: Silver Fork Fault, Yankee Fault, Belorophan Fissure, Alta Thrust Zone
Alterations
Not available
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian
Analytical Data
Analytical Data: ORE SHIPPED IN 1912 AVERAGED: 17.64 DOLLARS/TON AU. 31 OZ/TON AG, 36.4 % PB
Materials
Ore: Tetrahedrite
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Galena
Gangue: Barite
Comments
Comment (Deposit): THREE TYPES OF DEPOSITS WERE WORKED: PLACER, BRECCIA ZONE AND FISSURE VEIN. THE PLACER CONSISTED OF ARGENTIFEROUS GALENA FLOAT RANGING IN SIZE FROM PEBBLES TO BOULDERS. THE BRECCIA ZONE CONSISTED OF BLACK, SHALY GOUGE AND BRECCIA CONTAINING PYRITE AND CHALCOPYRITE, MOST OF THE GOLD APPARENTLY OCCURRING WITH THE CHALCOPYRITE. THIS ZONE, OCCURRING ALONG THE LIVE YANKEE FAULT, WAS CHIEFLY VALUABLE FOR LEAD, SILVER AND GOLD, WITH SOME COPPER PRODUCTION. THE BELOROPHON FISSURE AND OTHER NE TRENDING FISSURES YIELDED ORE CONTAINING PYRITE, GALENA, SPHALERITE AND TETRAHEDRITE WITH BARITE GANGUE AND YIELDING CHIEFLY LEAD, ZINC AND COPPER.
Comment (Workings): BY 1880, THE BELOROPHAN MINE CONSISTED OF THREE TUNNELS, TOTALING 600 FT., THE LIVE YANKEE, MARY ELLEN AND WEST EXTENSION CLAIMS HAD OVER 1600 FT IN WORKINGS. IN 1918 THE BELOROPHAN MINE HAD A TUNNEL OVER 800 FT LONG. THE MARY ELLEN PROPERTY WAS DEVELOPED IN 1943 BY THREE ADITS TOTALING 700 FT IN TOTAL LENGTH.
References
Reference (Deposit): CALKINS, F.C. AND BUTLER, B.S., 1943, GEOLOGY AND ORE DEPOSITS OF THE COTTONWOOD-AMERICAN FORK AREA, UTAH: USGS PROF. PA., 201, P. 143-145.
Reference (Deposit): BUTLER, B.S. ET. AL, 1920, THE ORE DEPOSITS OF UTAH: USGS PROF. PA. 111, P. 258, 269.
Reference (Deposit): BROMFIELD, C.S. AND PATTEN, L.L., 1981, MINERAL RESOURCES OF THE LONE PEAK WILDERNESS STUDY AREA, UTAH AND SALT LAKE COUNTIES, UTAH: USGS BULL. 1491, P. 94.
Reference (Deposit): BROMFIELD, C.S., 1975, MINERAL RESOURCES OF THE LONE PEAK WILDERNESS STUDY AREA, UTAH AND SALT LAKE COUNTIES, UTAH: USGS OPEN FILE REPORT 75-382, P. 179.
Reference (Production): BUTLER, B.S., ET. AL., 1920, P. 258; CALKINS, F.C. AND BUTLER, B.S., 1943, P. 143; BROMFIELD, C.S. AND PATTEN, L.L., 1975, P. 179.
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