Mammoth Mine

The Mammoth Mine is a copper mine located in Greenlee county, Arizona at an elevation of 5,279 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 Mine
Secondary: Arizona Copper Co Group

Commodity

Primary: Copper

Location

State: Arizona
County: Greenlee
District: Copper Mountain Cistrict

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: Phelps Dodge Corp., Morenci Branch )
Years: 1922 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1890
Discovery Year: 1872
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

Not available

Orebody

Form: TABULAR

Form: TABULAR

Structure

Type: R
Description: Normal Faulting Confined To Pre-Tertiary Rocks

Type: L
Description: Vicinity Is Extensively Faulted ; At The Ne End Of The Tunnel, The Main Fissure Appears To Break Into The Porphyry And Is Complicated By Faulting

Alterations

Alteration Type: L
Alteration Text: Pure Kaolin Occurs, No Sulfide Ore Is Present

Rocks

Name: Plutonic Rock
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Ordovician

Name: Plutonic Rock
Role: Associated
Age Type: Host Rock
Age Young: Late Ordovician

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

Analytical Data

Not available

Materials

Ore: Chrysocolla
Gangue: Malachite

Comments

Comment (Location): LOCATED IN GARFIELD GULCH, 0.5 MILE E FROM THE MOUTH OF THE CANYON; CLAIMS EXTEND INTO THE SE QUARTER OF SECTION 27 ; INFO FROM LAND.ST :(1973)

Comment (Development): OWNERS AND OPERATORS INCLUDED ROBERT METCALF, LESZYNSKY BROTHERS, ARIZ COPPER CO LTD

Comment (Production): PRODUCTION DATA INCLUDED ON LONGFELLOW METCALF MINE DATA; LONGFELLOW METCALF ALSO INCLUDES THE OTHER ARIZ COPPER CO LTD MINES OF DETROIT, LONGFELLOW, METCALF, YAVAPAI, JOY, HUMBOLDT, AND CORONADO

Comment (Deposit): 2 PATENTED CLAIMS: (MAMMOTH, LITTLE MAMMOTH MINE); CHRYSOCOLLA OCCURS ONLY IN KAOLIN GANGUE ALONG THE CONTACT OF PORPHYRY AND SEDIMENTARY SERIES

Comment (Workings): DEVELOPMENTS INCLUDED ONE TUNNEL 800 FT LONG, WITH EXTENSIVE OPEN STOPING ABOVE IT; ONE WINZE 100 FT DEEP, SUNK FROM THE LOWER TUNNEL LEVEL

Comment (Geology): PORPHYRY DIKE CONTINUES FROM THE MINE FOR .25 MILE TO THE NE, WHERE DIKE AND LIMESTONE BEDS ARE COVERED BY BASALT AND RHYOLITE TERTIARY FLOWS; LONGFELLOW LIMESTONE BEDS DIP 10NNW IN THE VICINITY OF THE MINE

References

Reference (Deposit): BENNETT, 1975, GEOLOGY AND ORIGIN OF THE BRECCIAS IN THE MORENCI-METCALF DISTRICT, GREENLEE COUNTY, ARIZONA: M.S. THESIS UNIVERSITY OF ARIZONA, 153 P.

Reference (Deposit): ABGMT-USBM FILE DATA

Reference (Deposit): ABGMT CLIPPINGS FILE, ARIZONA COPPER CO LTD

Reference (Deposit): STEVENS, 1911, THE COPPER HANDBOOK, V. 10, P. 356, ARIZONA COPPER CO LTD

Reference (Deposit): LINDGREN, W., 1905 , THE COPPER DEPOSITS OF THE CLIFTON-MORENCI DISTRICT, ARIZONA: U.S.G.S. PROFESSIONAL PAPER 43 , P. 353

Reference (Deposit): GALBRAITH, MINERALS OF ARIZONA, ARIZ BUREAU OF MINES GEOLOGICAL SERIES NO 15, BULL 149

Reference (Deposit): BLM DISTRICT SHEET 837

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.