National Mine

The National Mine is a copper mine located in Santa Cruz county, Arizona at an elevation of 4,800 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

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.

Site Name

Primary: National Mine
Secondary: Erin
Secondary: National Consolidated Mine

Commodity

Primary: Copper
Secondary: Silver
Secondary: Lead
Secondary: Gold

Location

State: Arizona
County: Santa Cruz
District: Patagonia 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

Type: Underground

Ownership

Owner Name: George Gross, National Consolidated Mining Co.
Years: 1906 - 1915

Owner Name: National Consolidated Mining Co.
Years: 1906 - 1915

Production

Not available

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1906
Year Last Production: 1915
Discovery Year: 1899
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: Sonoran Desert

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Structure

Type: R
Description: Deposits In Region Are Mainly Lead-Silver Quartzitic Veins Which Strike E-W At About Right Angles To Axis Of Range

Type: L
Description: Deposits Mainly In Coarse Granite Porphyry Which Intrudes Quartz Monzonite; Monzonite Outcrops Nearby To Ne

Alterations

Alteration Type: L
Alteration Text: Minor Oxidation; Granite Porphyry Altered Near Vein

Rocks

Name: Granite
Role: Host
Age Type: Host Rock
Age in Years: 160.000000+-
Dating Method: Pb-Alpha
Material Analyzed: Zircon
Age Young: Jurassic

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Jurassic

Analytical Data

Analytical Data: EARLY 1900'S ORE VALUES AVERAGED 6.5% CU, 21 OZ/TON AG, 1.1% PB, 0.4 OZ./TON AU

Materials

Ore: Chalcopyrite
Ore: Pyrite
Gangue: Limonite

Comments

Comment (Location): ON THE NORTH BANK OF CANADA DE LA PALOMA; 1 3/4 MILES SW OF O'MARA MINE ; INFO FROM LAND.ST :(1979)

Comment (Deposit): NATIONAL MINE IS AT NORTH END OF SERIES OF PROPERTIES COMPRISED IN A BELT ABOUT 1.0 MILE WIDE WHICH EXTENDS SOUTHWARD FROM PALOMA CANYON TO PROVIDENCIA CANYON FOR A DISTANCE OF ABOUT 2.5 MILES, AND IS REFERRED TO AS THE GROSS BELT ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Deposit): BEST COPPER ORE AT DEPTH; NATIONAL NO. 4 PROSPECT IS ON A 2-FT. SILICEOUS GALENA-SILVER VEIN WHICH DIPS 50S IN GRANITE PORPHYRY AND IS PARTLY ASSOCIATED WITH A FAULT SHEAR ZONE

Comment (Workings): SHAFT CONTAINS ABOUT 400 FT OF DRIFTS; NATIONAL NO. 4 PROSPECT LOCATED ON OPPOSITE SIDE OF CANADA DE LA PALOMA, IS OPENED BY A 90-FT. DRIFT AND 90-FT INCLINED WINZE

Comment (Geology): GROSS BELT AND FOOTHILLS SEPARATED FROM STEEP SLOPES OF RANGE BY PIEDMONT-LIKE VALLEY ALONG WHICH PIEDMONT FAULT RUNS; FAULT EXTENDS NORTHWARDS FOR 6 MILES

References

Reference (Deposit): USBM-ABGMT PRODUCTION DATA FILE

Reference (Deposit): USBM FILE DATA-CLUSTER #22, NATIONAL MINE

Reference (Deposit): SCHRADER, F.C., 1915, USGS BULL 582, P. 310-311

Reference (Deposit): KEITH, S.B., 1975, ABM BULL 191, P. 81

Reference (Deposit): ABGMT CLIPPINGS FILE NATIONAL MINE

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.