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
Elevation: 7,100 Feet (2,164 Meters)
Commodity: Silver
Lat, Long: 40.04611, -113.90083
Map: View on Google Maps
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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
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
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)
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