Coronado Mine

The Coronado Mine is a copper mine located in Greenlee county, Arizona at an elevation of 5,751 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: Coronado Mine  

State:  Arizona

County:  Greenlee

Elevation: 5,751 Feet (1,753 Meters)

Primary Mineral: Copper

Lat, Long: 33.11167, -109.39778

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 Coronado Mine

Coronado Mine MRDS details

Site Name

Primary: Coronado Mine
Secondary: Horseshoe Shaft
Secondary: Arizona Copper Co Group
Secondary: Coronado Mining Co Property


Commodity

Primary: Copper
Tertiary: Manganese
Tertiary: Zinc
Tertiary: Lead


Location

State: Arizona
County: Greenlee
District: Copper Mountain 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: Surface/Underground


Ownership

Owner Name: Phelps Dodge Corp., Morenci Branch


Production

Not available


Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1913
Year Last Production: 1918
Discovery Year: 1874
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: Diabase And Porphyry Dikes Connected By A Fissure Vein System, Of Which The Coronado Vein Is The Most Important

Type: L
Description: Fissure Is Followed In Places By A Diabase Dike That Shows Evidence Of Crushing And Movement On The Vein; Horseshoe Lode Consists Of Alterred Granite And Contact Breccia


Alterations

Alteration Type: L
Alteration Text: Sericitic Alterration Accompanied By Quartz Cementation Occurring Within Friction Breccia, Diabase And Crushed Material Of The Fault


Rocks

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


Analytical Data

Analytical Data: 6.91 AND 9.41% FE
Analytical Data: 67 AND 48.9% SI
Analytical Data: 1905 ASSAY VALUES AVERAGED 11.17 AND 21.95% CU


Materials

Ore: Chalcocite
Ore: Coronadite
Ore: Libethenite
Ore: Chrysocolla
Ore: Malachite
Ore: Pyrite
Gangue: Kaolin
Gangue: Limonite


Comments

Comment (Workings): DEVELOPMENTS INCLUDED THE 3200 FT LONG CORONADO INCLINE CONNECTED TO A ONE MILE LONG TRAMWAY ENDING AT THE CORONADO MINE (INCLINE STARTS AT CHASE CREEK); ONE OPEN CUT LOCATED ONE MILE TO WEST OF MAIN SHAFTS AND IN HORSESHOE GULCH (CONNECTED TO MINES BY AN AERIAL TRAMWAY); SEVERAL WINZES AND STOPES TO DEPTHS OF 300 FT; 200 FT DEEP HORSESHOE SHAFT LOCATED TO WEST OF MAIN WORKINGS; 2 OTHER SHAFTS, ONE WITH A DEPTH OF 1100 FT; 9400 FT LONG ADIT.

Comment (Geology): CROPPINGS CONTAIN COPPER CARBONATES THAT ARE REPLACED AT SLIGHT DEPTHS BY CHALCOCITE, WHICH IS IN TURN REPLACED AT GREATER DEPTHS BY PYRITE AND CHALCOPYRITE. DIABASE DIKE HAS MAXIMUM WIDTH OF 70 FT. VEIN FORMATION IS BELIEVED TO BE CONNECTED WITH THE INTRUSION OF DIABASE DIKES WHICH ARE SLIGHTLY OLDER THAN THE PORPHYRY DIKES THROUGHOUT THE DISTRICT. THE VALUE OF THE ORE DEPRECIATES RAPIDLY WITH DEPTH. OXIDIZED ZONE REACHES BELOW THE 400 FT LEVEL WHILE DEPTH OF CHALCOCITE ORE RANGES FROM 300 TO 600 FT.

Comment (Deposit): SEE ALO: DOVER COPPER GROUP FOR REGIONAL GEOLOGICAL INFORMATION. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Location): ABOVE LOCATION COORDINATES DESCRIBE THE MAIN WORKINGS OF THE CORONADO MINE; THE HORSESHOE SHAFT, AND EXTENSION OF THE MINE IS LOCATED ABOUT 3500 FT TO THE WEST. ; INFO FROM LAND.ST :(1973)

Comment (Commodity): LIBETHENITE OCCURS AS SMALL CRYSTALS IN CAVITIES AND SEAMS IN A QUARTZITIC GANGUE.

Comment (Production): ADDITIONAL PRODUCTION DATA MIGHT BE INCLUDED UNDER LONGFELLOW METCALF MINE; LONGFELLOW METCALF ALSO INCLUDES THE OTHER ARIZONA COPPER CO MINE DATA OF THE DETROIT, LONGFELLOW, METCALF, YAVAPAI, HUMBOLDT, MAMMOTH, AND JOY MINES.

Comment (Development): OWNERS INCLUDED CORONADO MINING CO, ARIZONA COPPER CO LTD; PRODUCTION DATA PRIOR TO 1913 AND AFTER 1918 MIGHT BE INCLUDED IN THE ARIZONA COPPER CO LTD PRODUCTION STATISTICS (SEE LONGFELLOW METCALF METCALF

Comment (Deposit): 3 PATENTED CLAIMS ADJACENT TO THE DOVER COPPER GROUP.


References

Reference (Deposit): USBM FILES, CORONADO MINE.

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

Reference (Deposit): BLM DISTRICT SHEET 840.

Reference (Deposit): LANGTON, J.M., 1973, ORE GENESIS IN THE MORENCI-METCALF DISTRICT. AMERICAN INSTITUTE OF MING, METALLURGICAL, AND PETROLEUMENGINEERS: TRANSACTIONS, V. 254, P. 256.

Reference (Deposit): ABGMT-USBM FILE DATA.

Reference (Deposit): WATT, ROBERTA, 1956, HISTORY OF MORENCI ARIZONA, M.A. THESIS, UNIVERSITY OF ARIZONA, P. 17.

Reference (Deposit): ARIZ BUR MINES BULL 149, NO. 15.

Reference (Deposit): USGS PP 43, P. 338-344.

Reference (Deposit): STEVENS, H.J., 1911, THE COPPER HANDBOOK, V. X, P. 356-357, ARIZONA COPPER CO LTD.

Reference (Deposit): WEED, W.H., 1918, THE MINES HANDBOOK, V. XIII, P. 470-471, ARIZONA COPPER CO LTD.