Hinkley Shaft

The Hinkley Shaft is a copper and gold mine located in Juab county, Utah at an elevation of 6,519 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: Hinkley Shaft

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: Underground

Ownership

Owner Name: Utah Central Mining Co.
Years: 1933 -

Owner Name: Utah Central Mining Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1933
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 Mountains Homocline Striking N20e And Dips 30 Sw

Type: L
Description: Ne Trending Fault Zone

Alterations

Alteration Type: L
Alteration Text: Limonitic

Rocks

Name: Tuff
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Tuff
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Tuff
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cambrian

Name: Tuff
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian

Analytical Data

Not available

Materials

Ore: Gold
Ore: Malachite

Comments

Comment (Location): SECTION SUBDIVISIONS SE 1/4 SE 1/4 SW 1/4

Comment (Production): ITEMS 1-4 ARE FOR SEPT., NOV., DEC. 1933; ITEMS 5-7 FOR JAN. 1934

Comment (Commodity): THE UPPER 40 FT OF THE STOPE PRODUCED A MEDIUM GRADE GOLD ORE IN LIMONITIC AND COPPER STAINED CARBONATE ROCK. BELOW THE 40 FT LEVEL WAS FOUND A HIGH GRADE SECONDARY COPPER CARBONATE ORE. THE GOLD ORE CONTAINED ANOTHER 70 FT DOWN WARD ON THE HANGING WALL WHERE IT PINCHED OUT

Comment (Development): THE UT. GEOL. AND MINERAL SURVEY HAS ON FILE THE ORIGINAL REPORT OF GUY CRANE AND OTHER ENGINEERS & GEOLOGISTS TO INCLUDE, MAPS, SURVEYS, ASSAYS, AND CORRESPONDANCE

Comment (Workings): THE MINE WORKINGS CONSIST OF A TUNNEL DRIFT ABOUT 60 FT LONG & AN INCLINE SHAFT 140 FT DEEP. THE TUNNEL FOLLOWS THE STRIKE OF THE ORE VEIN, AND THE INCLINE FOLLOWS THE DIP.

Comment (Deposit): MINING STARTED ON A SMALL COPPER SHOWING IN A QUARTZ LEDGE IN DOLOMITE "H" (CRITTENDEN) (LOWER MARJUM FM?) THE LEDGE IS PART OF THE KEYSTONE-ALTO VEIN SYSTEM & IS ACCOMPANIED BY AN 18" QTZITE PEBBLE DIKE.

References

Reference (Deposit): EVERTS, M.L., 1980, UTAH GEOLOGICAL & MINERAL SURVEY ON SITE INVESTIGATION

Reference (Deposit): CRITTENDEN, M.D., STRACZEK, J.A., & ROBERTS, R.J., 1961, MANGANESE DEPOSITS IN THE DRUM MTNS, JUAB & MILLARD COUNTIES, UT: USGS BULL. 1082-H

Reference (Deposit): CRANE, G.W., 1934, GEOLOGY AND EVALUATION OF COMPANY HOLDINGS IN THE DETROIT DISTRICT: REPORT TO MR. FRANK SYLVESTER, PRESIDENT OF UTAH CENTRAL MINES COMPANY FROM G.W. CRANE, CONSULTING GEOLOGIST, MARCH 15, 1934, MAPS, SURVEYS, ASSAYS, ETC.

Reference (Deposit): 1920 RECON BUTLER, B.S., USGS PP 11

Reference (Production): CRANE, G.W., 1934, COMPANY REPORT: UTAH CENTRAL MINES CO.

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