Alto Mine

The Alto Mine is a copper mine located in Juab county, Utah at an elevation of 6,604 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

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Site Name

Primary: Alto Mine

Commodity

Primary: Copper
Secondary: Silver
Secondary: Gold

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

Not available

Ownership

Owner Name: Utah Central Mining Co.
Years: 1934 -

Owner Name: Utah Central Mining Co.

Production

Year: 1917
Year: 1917

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1914
Discovery Year: 1900
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

Form: IRREGULAR LENS

Structure

Type: R
Description: Drum Mtns Homocline

Type: L
Description: Keystone Fault Strikes Ne

Alterations

Alteration Type: L
Alteration Text: Iron Okide

Rocks

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

Name: Dolomite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cambrian

Analytical Data

Analytical Data: 1934 DUMP ASSAY: 0.025 OZ AU, 0.70 OZ AG, 1.22% CU
Analytical Data: ASSAY OF JAN. 12, 1916: 2 SAMPLES AVG. 26.28% CU, 0.03 OZ AU, 0.28 OZ AG

Materials

Ore: Malachite
Ore: Gold

Comments

Comment (Geology): A 40 FT VERTICAL WINZE SUNK ON THE MAIN ORE SHOOT IS ALL IN MINERALIZED MATERIAL INDICATING THE DOWNWARD EXTENSION OF THE SHOOT. DRIFTING 100 FT NW ORE QUANITY DECREASED IN THAT DIRECTION.

Comment (Development): ALL OF THE REPORTS MENTIONED ABOVE ARE ON FILE AT THE UTAH GEOLOGICAL & MIN. SURVEY, SALT LAKE CITY, UT. THE REPORTS INCLUDE MAPS, MEASURED SECTIONS, ASSAYS AND OTHER INFORMATION.

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

Comment (Production): ITEM #1 GARFIELD SMELTER RETURN 3-13-1916; ITEM #2 RETURN OF JUNE 1, 1916; ITEMS 3-4 JULY 1917

Comment (Deposit): AT 40 FT FROM PORTAL OF UPPER TUNNEL ORE WAS FOUND AND FOLLOWED ABOUT 140 FT W. & NW WITH TO OR MORE STOPES, ONE OF WHICH EXTENDS TO THE SURFACE ABOUT 80 FT ABOVE THE TUNNEL LEVEL.

Comment (Workings): 2 TUNNELS HAVE BEEN DRIVEN AT A VERTICAL INTERVAL OF 142 FT. THE UPPER OF WHICH IS RESPONSIBLE FOR ALL ORE PRODUCTION TO 1934

References

Reference (Production): CRITTENDEN, M.D., 1961, MANGANESE DEPOSIT IN THE DRUM MTN.: 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, USGS PP 111

Reference (Deposit): 1961 RECON CRITTENDEN, USGS BULL. 1082-H

Reference (Deposit): 1969 RECON UT. GEOL. & MIN. SURVEY RI 41

Reference (Deposit): CRITTENDEN, M.D., 1961, MANGANESE DEPOSITS OF THE DRUM MTNS, JUAB-MILLARD COUNTIES UTAH: USGS BULL. 1082-H

Reference (Deposit): EVERTS, M.L., 1980, UT. GEOL. & MIN. SURVEY, ON SITE INVESTIGATION

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