Relief Shaft

The Relief Shaft is a copper and iron mine located in Salt Lake county, Utah at an elevation of 9,849 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: Relief Shaft
Secondary: Mountain Lake Group
Secondary: Great Western Mines

Commodity

Primary: Copper
Primary: Iron
Secondary: Silver
Secondary: Lead
Secondary: Gold
Tertiary: Tungsten

Location

State: Utah
County: Salt Lake
District: Big Cottonwood District

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Great Western Mines Co.
Home Office: Ogden, Ut.

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1875
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: IRREGULAR

Structure

Type: R
Description: Uinta-Cottonwood Arch, Sevier Overthrust Belt, Cordilleran Hingeline

Type: L
Description: Grizzly Thrust Fault

Alterations

Alteration Type: L
Alteration Text: Calc-Silicate Zone Of Skarn Environment, Oxidation

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Mississippian

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene

Analytical Data

Analytical Data: 5% CU, MINOR AU AND AG, .25-.30% WO3

Materials

Ore: Magnetite
Ore: Scheelite
Ore: Gold
Ore: Malachite
Ore: Chalcopyrite
Ore: Bornite
Ore: Pyrite
Ore: Galena
Gangue: Forsterite
Gangue: Serpentine
Gangue: Phlogopite
Gangue: Talc
Gangue: Tremolite
Gangue: Actinolite
Gangue: Epidote
Gangue: Garnet
Gangue: Chlorite
Gangue: Brucite

Comments

Comment (Commodity): DATA APPLIES TO MOUNTAIN LAKE GROUP AS A WHOLE

Comment (Location): TOWNSHIP IS UNSURVEYED ; INFO FROM LAND.ST :1983

Comment (Development): WASATCH NATIONAL FOREST OWNS THE SURFACE RIGHTS

Comment (Geology): CONTACT BETWEEN THE GRANODIORITE AND CARBONATES IS VERY IRREGULAR. NUMEROUS ROOF PENDANTS AND XENOLITHIC BLOCKS OF CARBONATE OCCUR IN THE INTRUSIVE NEAR THE CONTACT. SOME UNUSUAL BORATES, LUDWIGITE AND MAGNESIOLUDWIGITE ARE ABUNDANT. OTHER UNUSUAL MINERALS SUCH AS EPHESITE, SUSSEXITE, XANTHOPHYLLITE AND HYDROMAGNESITE MAY ALSO BE PRESENT.

Comment (Deposit): NO KNOWN PRODUCTION ; INFO.SRC : 1 PUB LIT

Comment (Workings): SHAFT IS 60 FEET DEEP

Comment (Deposit): MINERALIZATION, OF UNKNOWN EXTENT, OCCURS ALONG CONTACT BETWEEN THE CLAYTON PEAK STOCK AND THE DESERET AND GARDISON LIMESTONES. SKARN MINERALIZATION IS MAGNETITE RICH

Comment (Deposit): Discovery Year: LATE 1800'S

References

Reference (Deposit): BAKER, A.A., CALKINS, F.C., CRITTENDEN, M.D., JR., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE BRIGHTON QUADRANGLE, UTAH: U.S. GEOLOGICAL SURVEY GEOL. QUAD. MAP GQ-534

Reference (Deposit): JAMES, L.P., 1979, GEOLOGY, ORE DEPOSITS, AND HISTORY OF THE BIG COTTONWOOD MINING DISTRICT, SALT LAKE COUNTY, UTAH: U.G.M.S. BULL. NO. 114.

Reference (Deposit): CALKINS, F.C., AND BUTLER, B.S., 1943, GEOLOGY AND ORE DEPOSITS OF THE COTTONWOOD-AMERICAN FORK AREA, UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 201.

Reference (Deposit): BUTLER, B.S., LOUGHLIN, G.F., HEIKES, V.C., AND OTHERS, 1920, THE ORE DEPOSITS OF UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 111.

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