Gem Mine

The Gem Mine is a copper mine located in Gila county, Arizona at an elevation of 4,281 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: Gem Mine
Secondary: Gem and Boston
Secondary: Cordova Mine

Commodity

Primary: Copper
Secondary: Gold
Secondary: Silver
Secondary: Lead
Tertiary: Manganese
Tertiary: Zinc

Location

State: Arizona
County: Gila
District: Globe Hills District

Land Status

Land ownership: Federal
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: Heron And Gribble
Years: 1947 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1908
Year Last Production: 1947
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: LINEAR

Structure

Type: R
Description: Ne Trending Faults And Paleozoic Sediments, Later Diabase Intrusions

Type: L
Description: Diabase Outcrops Nw Of A Ne Trending Fault, Troy Quartzite Se Of Fault. Shaft Is In Troy Quartzite, Most Ore Is In Underlying Diabase

Alterations

Not available

Rocks

Name: Diabase
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

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

Name: Diabase
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleocene

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

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Lead
Gangue: Quartz
Gangue: Hematite

Comments

Comment (Location): ON THE NORTH EAST SLOPE OF BUFFALO HILL, NEAR SUMMIT. ; INFO FROM LAND.ST :(1979)

Comment (Development): PREVIOUS OWNERS INCLUDE GLOBE-BOSTON COPPER MINING CO. (ORIGINAL OWNER); GLOBE CONSOLIDATED COPPER CO. (1908); CORDOVA COPPER CO. (1909), LECORA COPPER CO. (1920), J.R. AND R.C. HERON AND SYDNEY GRIBBLE (1940'S); J.W. AND G. H. SHIELDS (1927-1929); INCLUDED 21 CLAIMS IN 1920

Comment (Deposit): PRINCIPLE VEINS ARE THE GEM AND THE FUTURE;

Comment (Workings): GEM SHAFT IS 1225FT DEEP WITH EXTENSIVE CROSS CUTTING AT 1,100 AND 1200 FT LEVELS; OTHER SHAFTS INCLUDE THE MALLORY (792 FT DEEP) AND BIRD

Comment (Geology): MINERALIZATION PROBABLY ASSOCIATED WITH ETERT, POST-DIABASE FAULTING AND INTRUSION PERIOD, ALTHOUGH ONLY OUTCROP OF ETERT SCHULTZE GRANITE IS AT OLD DOMINION MINE TO SW.

References

Reference (Deposit): USGS PP 342, P. 104

Reference (Deposit): ABGMT CLIPPINGS FILES

Reference (Deposit): ABGMT-USBM FILE DATA

Reference (Deposit): ADMR FILE DATA

Reference (Deposit): WEED,W.H.,THE MINES HANDBOOK, VOL. XIV, 1920, P. 212

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.