Mammoth Group

The Mammoth Group is a gold mine located in Pinal county, Arizona.

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

Name: Mammoth Group  

State:  Arizona

County:  Pinal

Elevation:

Primary Mineral: Gold

Lat, Long: 33.45833, -111.48750

Map: View on Google Maps

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.


Satelite image of the Mammoth Group

Mammoth Group MRDS details

Site Name

Primary: Mammoth Group
Secondary: Young Mines


Commodity

Primary: Gold
Tertiary: Copper
Tertiary: Silver
Tertiary: Manganese
Tertiary: Molybdenum


Location

State: Arizona
County: Pinal
District: Goldfield 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

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1893
Year Last Production: 1978
Years of Production:
Organization:
Significant: Y
Deposit Size: S


Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Sonoran Desert


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Type: L
Description: 2 N-Trending, Steeply W Dipping Faults


Alterations

Alteration Type: L
Alteration Text: All Mined Material Was Oxidized


Rocks

Name: Rhyolite
Role: Host
Age Type: Host Rock
Age Young: Pliocene


Analytical Data

Not available


Materials

Gangue: Quartz
Gangue: Limonite


Comments

Comment (Deposit): THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M002831 WITH RE CORD M002831 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEOD ORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Development): OPERATORS INCLUDED YOUNG MINES CO, GOLDFIELD MINES, E.L. JONES, E .H. SHUMWAY, HEBNER & FUNK; OPEN 1893-1894 WHEN A FLOOD BURIED WORKING S. BOUGHT BY G.U. YOUNG IN 1914. SPORADIC OPERATION UNTIL 1929. RECENT CYANIDE LEACHING. 88 CLAIMS IN 1920

Comment (Workings): WIDTH BELOW THE 426 FT LEVEL RANGES FROM 16-36 FT, ALL WORKED FOR 1240 FT LENGTH. WORKED EXTENSIVELY TO 200 FT LEVEL BEFORE 1914

Comment (Geology): TERT VOLCANIC FIELDS ARE ADJACENT TO THIS MINE, BOTH NW & SE OF TH E DRAINAGE WHERE IT IS LOCATED

Comment (Location): INFO FROM LAND.ST :1979


References

Reference (Deposit): ABM FILE DATA

Reference (Deposit): JOHNSON, 1972, USGS BULL 1355, 103 P.

Reference (Deposit): TENNEY, 1927-29, HISTORY OF MINING IN ARIZONA, SPECIAL COLLECTION, UNIV OF AZ LIBRARY & ABM LIBRARY, P. 344-45

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


Arizona Gold

Where to Find Gold in Arizona

"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 at Where to Find Gold in Arizona.