Endless Chain Mine

The Endless Chain Mine is a copper mine located in Santa Cruz county, Arizona at an elevation of 5,499 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

Name: Endless Chain Mine  

State:  Arizona

County:  Santa Cruz

Elevation: 5,499 Feet (1,676 Meters)

Commodity: Copper

Lat, Long: 31.43389, -110.72611

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 Endless Chain Mine

Endless Chain Mine MRDS details

Site Name

Primary: Endless Chain Mine
Secondary: Cunningham Tunnel


Commodity

Primary: Copper


Location

State: Arizona
County: Santa Cruz
District: Harshaw District


Land Status

Land ownership: National Forest
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

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: Replacement
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
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

Form: ROUGHLY BANDED


Structure

Type: R
Description: Rhyolite Forms Dikes And Intrusive Sheets In Limestone

Type: L
Description: Sedimentary Beds Strike Approximately N-S And Dip 65-70 W


Alterations

Alteration Type: L
Alteration Text: Replacement Of Cretaceous Sediments By Secondary Copper Minerals


Rocks

Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Early Cretaceous

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic

Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Early Cretaceous


Analytical Data

Not available


Materials

Ore: Tetrahedrite
Ore: Chalcocite
Ore: Chalcopyrite
Ore: Pyrite
Gangue: Epidote


Comments

Comment (Location): BETWEEN AUGUSTA AND MORNING GLORY MINES ON THE SW SIDE OF HARSHAW CREEK ; INFO FROM LAND.ST :(1979)

Comment (Development): OPERATORS INCLUDED ENDLESS CHAIN MINING CO; SHIPPED SOME ORE PRIOR TO 1900; PRODUCTION RECORDS ARE NOT AVAILABLE

Comment (Workings): DEVELOPMENTS INCLUDED AN INCLINED SHAFT WITH DRIFTS, CUNNINGHAM TUNNEL

Comment (Geology): LIMESTONE IN VICINITY IS IN PART SILICATED, CHERTY, OR FLINTY, WITH SOME INTERBEDDED STRATA OF QUARTZ


References

Reference (Deposit): SCHRADER, FRANK C., 1915, MINERAL DEPOSITS OF THE SANTA RITA AND PATAGONIA MOUNTTAINS, ARIZONA; USGS BULLETIN 582, P. 307-308

Reference (Deposit): USBM FILES, ENDLESS CHAIN MINE

Reference (Deposit): KEITH, STANTON B., 1975, INDEX OF MINING PROPERTIES IN SANTA CRUZ COUNTY, ARIZONA; ARIZONA BUREAU OF MINES BULLETIN 191, P. 79

Reference (Deposit): ABGMT FILES, STANTON B, KEITH

Reference (Deposit): SIMONS, FRANK S., 1974, GEOLOGIC MAP AND SECTIONS OF THE NOGALES AND LOCHIEL QUADRANGLES, SANTA CRUZ COUNTY, ARIZONA; USGS MAP I-762 (1:48000)


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