Yankee Mine

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

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.

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.

The Top Ten Gold Producing States

These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.