Casa Grande Santa Cruz

The Casa Grande Santa Cruz is a copper mine located in Pinal county, Arizona at an elevation of 1,322 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: Casa Grande Santa Cruz
Secondary: Casa Grande
Secondary: Casa Grande West

Commodity

Primary: Copper

Location

State: Arizona
County: Pinal
District: Casa Grande 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: Underground

Ownership

Owner Name: Casa Grande Copper Co.
Home Office: Arizona
Info Year: 1988

Owner Name: Asarco (American Smelting And Refining Co.), Freeport Mc Moran Gold Co.
Info Year: 1988

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Underground
Mining Method: Caving Methods - Block Caving
Milling Method: Flotation
Discovery Year: 1976
Years of Production:
Organization:
Significant: Y

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Sonoran Desert

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Covellite

Comments

Comment (Reserve-Resource): GRADE IS IN TERMS OF ACID-SOLUBLE FORMER OWNERS: HANNA MINING & GETTY OIL CURRENT OPERATOR: SANTA CRUZ JOINT VENTURE THIS PROPERTY ENTRY ALSO INCLUDES THE SANTA CRUZ PORTION OF THE MINERALIZED BODY. SANTA CRUZ JT. VT. WAS FORMED TO INVESTIGATE THE POTENTIAL FOR TRUE IN-SITU LEACHING IN CONJUNCTION WITH U.S. BUREAU OF MINES RESEARCH. DEMONSTRATED RESOURCE IS FOR BOTH SULFIDE AND OXIDE AS FOLLOWS: SULFIDE: 205,665,000 MT @ 0.81% CU OXIDE: 209,416,000 MT @ 1.08% CU TOTAL 415,081,000 MT @ 0.95% CU (INCLUDES 97,000,000 MT @ 0.7% CU IN IN-SITU LEACH PROJECT)

Comment (Deposit): PROPERTY VISITED BY R.C. SMITH & M. DALEY ON 3/20/78 MR JOHN STONE-PROJECT MANAGER PROVIDED SOME INFORMATION AND INDICATED A BLOCK CAVE MINING METHOD WOULD BE POSSIBLE THE PROPERTY WAS EVALUATED USING A.A. MATHEWS WITH JUNE 1977 COSTS THE HANNA MINING COMPANY 1977 ANNUAL REPORT PROVIDED RESERVES AND GRADE AS OF 06/83 THERE HAS BEEN NO CHANGE IN THE STATUS OF THIS PROPERTY SINCE THE ORIGINAL REPORT; IT REMAINS AN EXPLORED PROSPECT. MINOR CORRECTIONS MADE BY M.B. SAWYER IN 8/91 BASED ON DATA FROM 1987-88.

Comment (Geology): THE ORACLE GRANITE COUNTRY ROCK HAS BEEN INTRUDED BY A LARAMIDE INTRUSIVE OF QTZ. MONZONITE. THE ORE BODY IS A CLASSIC "PORPHYRY" TYPE.

Comment (Ownership): CASA GRANDE COPPER COMPANY HAS BEEN ESTABLISHED AS THE OPERATOR OF THE PROPERTY.

Comment (Reserve-Resource): ANNUAL REPORTS MORE RECENT THAN 1978 MAKE NO MENTION OF THIS DEPOSIT.

Comment (Geology): CHALCOCITE IS THE ONLY KNOWN MINERAL. THE OTHER COPPER SULFIDES AND OXIDE MINERALS ARE UNKNOWN.

References

Reference (Deposit): PROJECT PROCEEDS. NOV. 26, 1994. P.15.

Reference (Deposit): SOUTHWESERN PAY DIRT. INDUSTRY-GOVERNMENT PROJECT HAS BIG

Reference (Deposit): POTENTIAL. FEB., 1995. PP.4A-9A.

Reference (Deposit): MINING RECORD. PILOT-SCALE TEST BEGINS AT SANTA CRUZ

Reference (Deposit): IN-SITU PROJECT. V.107/N8 FEB. 21, 1996. P. 4.

Reference (Deposit): THE GETTY OIL COMPANY ANNUAL REPORT OF 1978.

Reference (Deposit): MINING MAGAZINE. IN SITU COPPER MINING TESTS IN U.S.A.

Reference (Deposit): THE MINING RECORD. ASARCO TAKES LEGAL ACTION IN MINING

Reference (Deposit): RESEARCH VENTURE. MACH 21, 1990. P. 3.

Reference (Deposit): MINING JOURNAL, LONDON, DRAFT MINE DESIGN. SEPT. 29, 1989.

Reference (Deposit): DEC. 1988. P. 460.

Reference (Deposit): AHLNESS., MILLENACKER. BUREAU OF MINES INVESTIGATES IN SUTU

Reference (Deposit): COPPER MINING. FEB., MARCH. 1989. PP. 9-15.

Reference (Reserve-Resource): AMCJ, 2/89, P. 16; DAHL, LINDA J., SUMMARY RPT.-CASA GRANDE

Reference (Reserve-Resource): USMB.

Reference (Deposit): MINING ENGINEERING. IN SITU COPPER MINING AT SANTA CRUZ:

Reference (Deposit): A PROJECT UPDATE. AUGUST 1991. PP. 1031-1034.

Reference (Deposit): A MINING RESEARCH CONTRACT REPORT. GENERIC IN SITU COPPER

Reference (Deposit): MINE DESIGN MANUAL. VOLUME 111, LAKESHORE FIELD

Reference (Deposit): EXPERIMENT AND DESIGN OF COMMERCIAL SCALE OPERATION.

Reference (Deposit): BUREAU OF MINES U.S. DEPT. OF THE INTERIOR. APRIL 1988.

Reference (Deposit): PAY DIRT. SANTA CRUZ IN SITU COPPER LEACHING RESEARCH

Reference (Deposit): LOOKING GOOD. FEB. 1992. P. 3B.

Reference (Deposit): AMERICAN MINING MANUAL. COPPER PROJECT GETS GREEN LIGHT.

Reference (Deposit): 1994. P. 7

Reference (Deposit): SKILLINGS MINING REVIEW. ARIZ. IN SITU MINING RESEARCH

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.