Coronado Mine

Producer in Greenlee county in Arizona, United States with commodities Copper, Zinc, Lead, Manganese

Geologic information

Identification information

Deposit ID 10109876
MRDS ID M800425
Record type Site
Current site name Coronado Mine
Alternate or previous names Horseshoe Shaft, Arizona Copper Co Group, Coronado Mining Co Property
Related records 10186633

Geographic coordinates

Geographic coordinates: -109.39843, 33.11177 (WGS84)
Elevation 1753
Relative position 2.0 MILES WEST OF METCALF.
(click for info)

Geographic areas

Country State County
United States Arizona Greenlee

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 004S 029E 06 E2 Arizona

Comments on the location information

  • 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)

Commodities

Commodity Importance
Copper Primary
Zinc Tertiary
Lead Tertiary
Manganese Tertiary

Comments on the commodity information

  • LIBETHENITE OCCURS AS SMALL CRYSTALS IN CAVITIES AND SEAMS IN A QUARTZITIC GANGUE.

Materials information

Materials Type of material
Chalcocite Ore
Chrysocolla Ore
Coronadite Ore
Libethenite Ore
Malachite Ore
Pyrite Ore
Kaolin Gangue
Limonite Gangue

Alteration

  • (Local) Sericitic Alterration Accompanied By Quartz Cementation Occurring Within Friction Breccia, Diabase And Crushed Material Of The Fault

Analytical data

Result 1905 ASSAY VALUES AVERAGED 11.17 AND 21.95% CU
Result 67 AND 48.9% SI
Result 6.91 AND 9.41% FE

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Rock unit name Precambrian Granite-Granodiorite Complex;Coronado Quartzite
    Rock description Precambrian Granite-Granodiorite Complex;Coronado Quartzite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite

Nearby scientific data

(1) -109.39843, 33.11177

Geologic structures

Type Description Terms
Regional Diabase And Porphyry Dikes Connected By A Fissure Vein System, Of Which The Coronado Vein Is The Most Important
Local 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

Ore body information

  • General form TABULAR
    Strike EW
    Dip 75 S
    Depth to bottom 182.88M
    Width 60.96M
    Length 3218.6M
  • General form TABULAR
    Dip 75 S

Controls for ore emplacement

  • Ew-Trending Fault Fissure Between Granite On The North And Quartz On The South

Comments on the geologic information

  • 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.

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1874
Discoverer Julius Freudenthal (Horseshoe Mine); Morris Leszynsky (Coronado Mine)
Discovery method Ore-Mineral In Place
Year of first production 1913
Year of last production 1918

Mining district

District name Copper Mountain District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Phelps Dodge Corp., Morenci Branch

Comments on the production information

  • 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.

Workings at the site

  • Type of workings Surface/Underground
    Length 2865.12M
    Overall depth 335.28M

Comments on the workings information

  • 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.

Comments on 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

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M800425
U.S. Bureau of Mines Minerals Availability System MAS 0040110083

Bibliographic references

  • Deposit

    ABGMT-USBM FILE DATA.

  • Deposit

    WATT, ROBERTA, 1956, HISTORY OF MORENCI ARIZONA, M.A. THESIS, UNIVERSITY OF ARIZONA, P. 17.

  • Deposit

    ARIZ BUR MINES BULL 149, NO. 15.

  • Deposit

    USGS PP 43, P. 338-344.

  • Deposit

    STEVENS, H.J., 1911, THE COPPER HANDBOOK, V. X, P. 356-357, ARIZONA COPPER CO LTD.

  • Deposit

    WEED, W.H., 1918, THE MINES HANDBOOK, V. XIII, P. 470-471, ARIZONA COPPER CO LTD.

  • Deposit

    USBM FILES, CORONADO MINE.

  • Deposit

    ABGMT CLIPPINGS FILE, CORONADO COPPER CO, ARIZONA COPPER CO LTD.

  • Deposit

    BLM DISTRICT SHEET 840.

  • Deposit

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

General comments

Subject category Comment text
Deposit 3 PATENTED CLAIMS ADJACENT TO THE DOVER COPPER GROUP.
Deposit SEE ALO: DOVER COPPER GROUP FOR REGIONAL GEOLOGICAL INFORMATION. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1981 Calder, Susan R. Arizona Bureau of Geology and Mineral Technology