Midnight Mine

The Midnight Mine is a copper and gold mine located in Greenlee county, Arizona at an elevation of 3,999 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: Midnight Mine  

State:  Arizona

County:  Greenlee

Elevation: 3,999 Feet (1,219 Meters)

Primary Mineral: Copper, Gold

Lat, Long: 33.07222, -109.30722

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 Midnight Mine

Midnight Mine MRDS details

Site Name

Primary: Midnight Mine
Secondary: Keating Mine


Commodity

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


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: Harriet Sweeting
Home Office: Box 1225, Clifton, Az
Years: 1960 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: Replacement
Operation Type: Unknown
Year First Production: 1910
Year Last Production: 1942
Discovery Year: 1903
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: FLAT TABULAR

Form: FLAT TABULAR


Structure

Type: R
Description: Ne Trending Faults; Intrusive Igneous Dikes Associated With Morenci Porphyry Stock

Type: L
Description: Porphyry Dikes Cutting Sedimentary Sequences


Alterations

Alteration Type: L
Alteration Text: Deposit Is Replacement Of Interbedded Sandstone And Limestone Sequences


Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 55.500000+-0.500000
Age Young: Tertiary


Analytical Data

Not available


Materials

Ore: Lead
Ore: Chalcopyrite
Ore: Galena
Ore: Sphalerite
Gangue: Epidote
Gangue: Garnet
Gangue: Limonite


Comments

Comment (Deposit): ONE PATENTED LODE CLAIM; CONTINOUS MINERALIZED LAYERS PENETRATE HANGING AND FOOT WALLS TO FORM IRREGULAR BODIES; DIMENSION OF DEPOSIT WERE ESTIMATED FROM SURFACE CUTS

Comment (Location): AT END OF JEEP TRAIL THAT LEAVES HIGHWAY 666 AT ROCK HOUSE CANYON AND HEADS NE ; INFO FROM LAND.ST :(1973)

Comment (Development): OPERATORS INCLUDED ED C. ROZELL

Comment (Workings): DEVELOPMENTS INCLUDED 2 SURFACE STOPES WITH DIMENSIONS OF 50 FT BY 40 FT BY 40 FT, 3 TUNNELS, AND 2 CROSSCUTS


References

Reference (Deposit): ARIZONA DEPARTMENT OF MINERAL RESOURCES FILE DATA

Reference (Deposit): BLM DISTRICT SHEET 842

Reference (Deposit): ARIZ BUR MINES BULL 137, P. 187

Reference (Deposit): BENNETT, K.C., 1975, GEOLOGY AND ORIGIN OF THE BRECCIAS IN THE MORENCI-METCALF DISTRICT, GREENLEE COUNTY, ARIZONA: M.S. THESIS, UNIVERSITY OF ARIZONA, 153 P.

Reference (Deposit): ARIZ BUR MINES BULL 145, NO 12, P 75-77

Reference (Deposit): ABGMT-USBM FILE DATA