The Keystone and Hard Times Mine is a copper and gold mine located in Juab county, Utah at an elevation of 6,460 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: 6,460 Feet (1,969 Meters)
Commodity: Copper, Gold
Lat, Long: 39.56056, -113.03750
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Keystone and Hard Times Mine MRDS details
Site Name
Primary: Keystone and Hard Times Mine
Commodity
Primary: Copper
Primary: Gold
Secondary: Silver
Location
State: Utah
County: Juab
District: Detroit 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: Surface/Underground
Ownership
Owner Name: Utah Central Mining Co.
Years: 1933 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
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: Drum Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Drum Mtns Homocline
Type: L
Description: Keystone Fault
Alterations
Alteration Type: L
Alteration Text: Limonitic
Rocks
Name: Limestone
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cambrian
Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Late Cambrian
Analytical Data
Analytical Data: FROM BOTTOM OF DRIFT 50 FT BELOW BOTTOM OF PIT: 6.72% CU, 0.40 OZ AG, 0.04 OZ AU
Analytical Data: ALSO 21.17% CU, 0.50 OZ AG, 0.27 OZ AU AVERAGE FROM DUMP (1916): 8% CU, 1.70 OZ AG, 0.12 OZ AU: ANOTHER DUMP 7.6% CU, 3.0 OZ AG, 0.68 OZ AU
Materials
Ore: Gold
Ore: Malachite
Comments
Comment (Deposit): SURFACE QUARRY OPENED A VEIN 60-100 IN WIDTH. SHAFT IS 632 FT DEEP. THE OPEN PIT PRODUCED HIGH GRADE CU ORE CARRYING 2-3 DOLLAR AU (1916 PRICES)
Comment (Workings): WORKINGS CONSISTS OF LEVELS AT 100, 200, 300, 425, 498, AND 632; LEVEL 100 HAS 100 FT OF WORKINGS; LEVEL 200 HAS 350 FT; 300 HAS 60 FT; 425 HAS 275 FT, 498 HAS 22 FT; 632 HAS 142 FT.
Comment (Location): SECTION SUBDIVISIONS NE 1/4 NW 1/4 SW 1/4 36 FOR KEYSTONE, NE 1/4, NE 1/4, SE 1/4, 35 FOR HARDTIMES
Comment (Development): LITTLE EFFORT WAS MADE FOR EXPLORATION IN THE BEGINNINGS OF THIS MINE. THE OPERATORS WERE SATISFIED WITH HIGH GRADING. THERE MAY STILL BE CONSIDERABLE LOW GRADE ORE UNDEVELOPED
Comment (Production): ITEMS 1-4 ARE FOR OCTOBER AND NOVEMBER 1933. SMELTER RETURNS: 11-26-1915 44,668 LB AT $11.26/T = $250.29 NET; 11-27-1916: 38,376 LB AT $33.20/T = $635.10 NET
References
Reference (Analytical Data): SRC.REF: COMPANY REPORT APRIL 1916
Reference (Deposit): EVERTS, M.L., 1980, UT. GEOL. & MIN. SURVEY, ON SITE INVESTIGATION
Reference (Deposit): CRANE, G.W., 1934, HOLDINGS OF UTAH CENTRAL MINES COMPANY: COMPANY REPORT.
Reference (Deposit): 1920 RECON BUTLER, USGS PP 111
Reference (Deposit): 1961 RECON CRITTENDEN, USGS BULL. 1082-H
Reference (Production): CRANE G.W., 1934, COMPANY REPORT: UTAH CENTRAL MINES CO.
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