Little Dollie Tunnel

The Little Dollie Tunnel is a copper mine located in Salt Lake county, Utah at an elevation of 8,199 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

Name: Little Dollie Tunnel  

State:  Utah

County:  Salt Lake

Elevation: 8,199 Feet (2,499 Meters)

Primary Mineral: Copper

Lat, Long: 40.62111, -111.59056

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 Little Dollie Tunnel

Little Dollie Tunnel MRDS details

Site Name

Primary: Little Dollie Tunnel
Secondary: Giles Mining Company
Secondary: Giles Group
Secondary: Cottonwood King
Secondary: Giles Mining and Milling Company
Secondary: Silver King Mines Co.


Commodity

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


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

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1902
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: TABULAR

Form: TABULAR


Structure

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

Type: L
Description: Northeast And Northwest Striking Faults And Fissures


Alterations

Alteration Type: L
Alteration Text: Bleaching And Argillization Noted Adjacent To Faults And Fissures, Calc-Silicate Skarns Next To Intrusive


Rocks

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

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Pennsylvanian

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

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


Analytical Data

Analytical Data: NO INFORMATION


Materials

Ore: Gold
Ore: Argentite
Ore: Malachite
Ore: Galena
Ore: Chalcopyrite
Gangue: Wollastonite


Comments

Comment (Development): 1000 FT OF TUNNELING COMPLETED BY 1904. OPTIONED BY COTTONWOOD KING MINING COMPANY IN 1916 WHO EXTENDED TUNNEL TO 1400 FT AND DID SOME RAISE AND DRIFT WORK. TWO ADITS UPHILL WERE DRIVEN FOR SHORT DISTANCE

Comment (Workings): LITTLE DOLLIE TUNNEL IS ABOUT 1400 FT LONG WITH UNKNOWN AMOUNT OF RAISE AND DRIFT WORK. TWO OTHER CAVED ADITS ABOVE LITTLE DOLLIE TUNNEL ARE MENTIONED BUT NOT LOCATED AND HAVE A COMBINED LENGTH OF ABOUT 600 FT

Comment (Deposit): INITIAL WORK EXPLORED A N60E STRIKING FISSURE BELIEVED TO BE AN EXTENTION OF THE QUEEN BESS FISSURE. MORE WORK REVEALED A N70 TO 80W STRIKING FISSURE OR FAULT ZONE. ALSO ENCOUNTERED, WERE SKARN REPLACEMENTS BEARING CU AND AU MINERALIZATION NEAR THE CONTACT BETWEEN LIMESTONE AND THE ALTA STOCK.

Comment (Deposit): IN SPITE OF ABUNDANT WORKINGS, NO PRODUCTION IS REPORTED FROM THE LITTLE DOLLIE TUNNEL. LITTLE DOLLIE PROPERTY MAY HAVE BEEN CONSOLIDATED WITH SILVER KING COALITION MINES HOLDINGS IN 1927 ; INFO.SRC : 1 PUB LIT

Comment (Location): INFO FROM LAND.ST :1983


References

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.

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.G.S. GEOL. QUAD. MAP GQ-534