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
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.
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)
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.
