Dewey Mine

The Dewey Mine is a silver mine located in Tooele county, Utah at an elevation of 7,100 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: Dewey Mine  

State:  Utah

County:  Tooele

Elevation: 7,100 Feet (2,164 Meters)

Primary Mineral: Silver

Lat, Long: 40.04611, -113.90083

Map: View on Google Maps


Satelite image of the Dewey Mine

Dewey Mine MRDS details

Site Name

Primary: Dewey Mine
Secondary: Dewey Claims


Commodity

Primary: Silver
Tertiary: Copper
Tertiary: Manganese


Location

State: Utah
County: Tooele
District: Willow Springs District


Land Status

Land ownership: Private


Holdings

Not available


Workings

Not available


Ownership

Owner Name: H. D. Mitchell


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1890
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Deep Creek Mountains


Mineral Deposit Model

Not available


Orebody

Form: TABULAR


Structure

Type: R
Description: Basin And Range


Alterations

Alteration Type: L
Alteration Text: Silicification


Rocks

Name: Dolomite
Role: Host
Age Type: Host Rock
Age Young: Late Silurian


Analytical Data

Analytical Data: NOLAN (1935)-GRAB SAMPLE, FROM THE DUMP ASSAYED 0.05 OZ. AU AND 90.0 OZ. AG PER TON, THOMSON (1973)-SPECTROGRAPHIC ANALYSES OF SLICIFIED DOLOMITE.


Materials

Ore: Malachite
Ore: Tetrahedrite
Ore: Pyrolusite
Gangue: Jarosite
Gangue: Quartz
Gangue: Limonite
Gangue: Dolomite


Comments

Comment (Workings): THREE ADITS, ONE SHAFT, FOUR PITS. WORKINGS, N TO S-35 FT, DEWEY ADIT, TRENDING NE; 100 FT. SOUTH OF THIS ADIT A 50 FT. ADIT IS DRIVEN NORTH AND IS ADJACENT TO A 30 FT. SHAFT. THE SHAFT IS ADJACENT TO THE PORTAL. THIRD ADIT IS 35 FT. LONG, DRIVEN N-NE, 130 FT, S-SW OF DEWEY ADIT.

Comment (Location): SE OF NE

Comment (Production): 800-900 LBS. OF AG ORE PRODUCED 1890-1900, SOLD FOR 1,800 DOLLARS.

Comment (Deposit): MINOR MINERALIZATION OF BRECCIATED DOLOMITE ALONG A NORTHEAST-STRIKING FAULT ZONE.


References

Reference (Deposit): 1973 GEOLMAP UGMS BULL. 99

Reference (Analytical Data): SRC.REF: THOMSON, K.C., 1973, P. 29; NOLAN, T.B., 1935, P. 167

Reference (Deposit): NOLAN, T.B., 1935, THE GOLD HILL MINING DISTRICT, UTAH: USGS PROF. PAPER 177, P. 167.

Reference (Deposit): THOMSON, K.C., 1973, MINERAL DEPOSITS OF THE DEEP CREEK MOUNTAINS, TOOELE AND JUAB COS., UTAH: UGMS BULL. 99, P. 29

Reference (Deposit): 1935 RECON NOLAN, T.B., PROF. PAPER 177

Reference (Production): THOMSON (1973, P. 29); NOLAN (1935, P. 167)