The Cobre Loma Mine is a copper, zinc, and silver mine located in Cochise county, Arizona at an elevation of 5,801 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: 5,801 Feet (1,768 Meters)
Commodity: Copper, Zinc, Silver
Lat, Long: 31.88972, -109.96250
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.
Cobre Loma Mine MRDS details
Site Name
Primary: Cobre Loma Mine
Commodity
Primary: Copper
Primary: Zinc
Primary: Silver
Location
State: Arizona
County: Cochise
District: Middle Pass 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
Owner Name: Cobre Loma Copper Co, Middlemarch Copper Co, Arizona Middlemarch Topper Co
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Contact Metamorphic
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: Mexican Highland
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: L
Description: Contact Between Limy Hornfels And Porphyritic Intrusive East Dipping, Nw Trending Thrust Sheets. Steep Dipping To Overturned Cretaceous Beds, At This Mine, Fault Is Cobra Loma Thrust Fault, And Cretaceous Beds Dip 30-60 Sw In The Area Ne Of Thrust
Alterations
Alteration Type: L
Alteration Text: Pyrometasomatic Tactite Zone
Rocks
Name: Plutonic Rock
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous
Name: Plutonic Rock
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Name: Plutonic Rock
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Pyrite
Ore: Sphalerite
Ore: Bornite
Comments
Comment (Deposit): ORE IN A PYROMETASOMATIC TACTITE ZONE IN LIMY HORNFELS ALONG THE CONTACT WITH A PORPHYRITIC INTRUSIVE.
Comment (Workings): TUNNEL WORKINGS.
Comment (Geology): PYROMETASOMATIC TACTITE ZONE IN LIMY HORNFELS ALONG CONTACT WITH PORPHYRITIC INTRUSIVE. PORPHYRITIC INTRUSIVE IS MAPPED AS RHYOLITE BY SOUSA, 1980
Comment (Location): SE 1/4 SEC 2, NE 1/4 SEC 11, UTM ACC
Comment (Production): PROBABLY UP TO 5,000 TONS OF ORE PRODUCED FROM 1915 TO 1920.
References
Reference (Deposit): KEITH, S B, 1973, ARIZONA BUREAU OF MINES BULLETIN 187, P 68.
Reference (Deposit): F.X. SOUSA, 1980, M.S. THESIS, UNIV. OF ARIZ.
Reference (Production): KEITH, 1973, ARIZ BUR OF MINES BULL 187.
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.
