Mammoth - St. Anthony Mine

The Mammoth - St. Anthony Mine is a gold, lead, zinc, and vanadium mine located in Pinal county, Arizona at an elevation of 3,199 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: Mammoth - St. Anthony Mine
Secondary: Tiger
Secondary: Collins
Secondary: Mohawk
Secondary: New Years
Secondary: Mammoth
Secondary: St. Anthony
Secondary: Mammoth Mine
Secondary: Tiger Mine Tailings
Secondary: Mammoth Tailings

Commodity

Primary: Gold
Primary: Lead
Primary: Zinc
Primary: Vanadium
Secondary: Copper
Secondary: Silica
Secondary: Silver
Secondary: Molybdenum
Tertiary: Barium-Barite
Tertiary: Tungsten
Tertiary: Fluorine-Fluorite

Location

State: Arizona
County: Pinal
District: Mammoth 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

Ownership

Owner Name: Magma Copper Co.
Years: 1988 -

Owner Name: Cyprus Minerals Co.
Years: 1988 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1881
Discovery Year: 1879
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: Mexican Highland

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Form: TABULAR

Structure

Type: R
Description: Block Faulting Trending Nnw

Type: L
Description: Mammoth Fault Splits Ore Body Into 2 Segments

Alterations

Alteration Type: L
Alteration Text: Oxidized To 900 Ft, Slight To Complete Silicification, Some Chlori Tization, Sericitization, Clay Alteration

Rocks

Name: Quartz Monzonite
Role: Host
Age Type: Host Rock Unit
Age in Years: 1435.000000+-15.000000
Age Young: Precambrian

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age in Years: 22.300000+-
Age Young: Tertiary

Name: Volcanic Breccia (Agglomerate)
Role: Associated
Age Type: Host Rock Unit
Age Young: Mesoproterozoic

Analytical Data

Analytical Data: TYPICAL ORE ASSAYS 7.16% PB, 10.14% ZN, 0 .011 OZ/T AU, 1.53 OZ/T AG, 0.74% CU, 0.6% MG, 7.5% FE, AND 47.5% SI02
Analytical Data: MILL CONC IN 1938 CONTAINED 0.4 - 0.5% W03. TUNGSTEN IS CONTAINED IN WULFENITE AND VANADINITE

Materials

Ore: Vanadinite
Ore: Covellite
Ore: Wulfenite
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Malachite
Ore: Chrysocolla
Ore: Anglesite
Ore: Hemimorphite
Ore: Brochantite
Ore: Diaboleite
Ore: Gold
Ore: Linarite
Ore: Dioptase
Ore: Silver
Ore: Willemite
Ore: Galena
Ore: Descloizite
Ore: Mottramite
Ore: Smithsonite
Gangue: Pyrite
Gangue: Amethyst
Gangue: Calcite
Gangue: Tourmaline
Gangue: Epidote
Gangue: Barite
Gangue: Fluorite
Gangue: Quartz
Gangue: Chlorite
Gangue: Specularite

Comments

Comment (Location): ON E SLOPE OF BLACK HILLS, GOOD ACCESS BY ROAD. INFO FROM LAND.ST :(1979)

Comment (Production): PROD FIGURES IN TABLE ARE FROM MAMMOTH MINE. $3 MILLION OF GOLD PRODUCED 1886-1918 (ELSING & HEINEMAN, 1936). TAILINGS WERE MINED FOR SILICA FLUX AND SHIPPED TO ASARCO'S SMELTER AT HAYDEN; ROCK FROM THE OPEN PIT HAS BEEN SHIPPED AS FLUX TO MAGNA'S SAN MANUEL SMELTER.

Comment (Development): MINE CLOSED IN 1952. ST. ANTHONY ORIGINALLY DEVELOPED AS 3 MINES. CYPRUS EXPLORING PROPERTY AS POTENTIAL LARGE GOLD PRODUCER AND WILL BE OPERATOR IN EXCHANGE FOR A 50% INTEREST IN THE PROPERTY.

Comment (Deposit): TWO MAJOR VEINS, THE MAMMOTH AND THE COLLINS. MO-V MINERALIZATION POSTDATES PB-CU-ZN MINERALIZATION. DEPOSITS OCCUR WHERE TERTIARY RHYOLITE INTRUDES PRECAMBRIAN QUARTZ MONZONITE.

Comment (Workings): OLD UNDERGROUND WORKINGS ARE NOW INACCESSIBLE.

Comment (Deposit): THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORDS D000829 AND M0 50189 WITH RECORD D000829 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERS ON T.G. THEODORE, USGS. ; INFO.SRC : 1 PUB LIT

References

Reference (Deposit): PETERSON, 1938, ABM BULL 144.

Reference (Deposit): WILSON ET AL, 1934, ABM BULL 137.

Reference (Deposit): CREASEY, 1965, USGS PP 471.

Reference (Deposit): CREASEY, 1950, ABM BULL 156.

Reference (Deposit): VAN ALSTINE, R.E., AND MOORE, R.T., 1969, FLUORSPAR, IN ABM BULLETIN 180, USGS BULLETIN 871, P. 353.

Reference (Deposit): PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERALS CARD FILE.

Reference (Deposit): PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

Reference (Deposit): SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: UNITED STATES BUREAU OF MINES SPECIAL PUBLICATION, 334 P.

Reference (Other Database): CIMRI

Reference (Reserve-Resource): SAWYER AND OTHERS, 1992 AND NIEMUTH, 1987.

Arizona Gold

"Where to Find Gold in Arizona" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Arizona. Read more: Where to Find Gold in Arizona.