Kofa Mine

The Kofa Mine is a gold mine located in Yuma county, Arizona at an elevation of 1,749 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: Kofa Mine
Secondary: S.H. Placers
Secondary: Kofa Gold Placers

Commodity

Primary: Gold

Location

State: Arizona
County: Yuma
District: Kofa District

Land Status

Land ownership: Federal
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.
Administrative Organization: Kofa Game Range

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
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: Sonoran Desert

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Gravel
Role: Host
Age Type: Host Rock
Age Young: Holocene

Analytical Data

Not available

Materials

Ore: Gold

Comments

Comment (Development): VARIOUS SMALL OPERATORS; MOSTLY SMALL DRY WASHING OPERATIONS.

Comment (Location): LOCATED ON THE KOFA GAME RANGE.

Comment (Production): TOTAL PRODUCTION ABOUT 2,500 OUNCES OF GOLD WITH SOME SILVER,MOSTLY EXTRACTED PRIOR TO 1900.

Comment (Deposit): THE GOLD OCCURS IN OUTWASH DEPOSITS WHICH CONSIST OF BOULDERS AND FRAGMENTS FROM THE METAMORPHIC AND VOLCANIC ROCKS. THE GOLD-BEARING DEBRIS IS SAID TO BE FROM A FEW FEET TO SEVENTY FEET DEEP OVER AN AREA OF APPROXIMATELY 60 ACRES. THE GOLD IS COARSE AND OCCURS NEAR BEDROCK. IT HAS EVIDENTLY BEEN DERIVED FROM THE DISINTEGRATION OF AURIFEROUS VEINS IN THE METAMORPHIC ROCKS AS IT IS MUCH COARSER THAN THAT CONTAINED IN THE NORTH STAR AND KING OF ARIZONA VEINS.

Comment (Workings): WORKINGS CONSIST OF SEVERAL SHALLOW PITS

References

Reference (Deposit): WILSON, E.D., 1952, ARIZONA GOLD PLACERS AND PLACERING: ARIZONA BUREAU OF MINES BULLETIN 160, P. 23.

Reference (Other Database): CIMRI

Reference (Production): A.B.M. BULLETIN 140, P. 104; A.B.M. BULLETIN 160, P. 24

Reference (Deposit): BUTLER, G.M., 1937, ARIZONA GOLD PLACERS AND PLACERING: ARIZONA BUREAU OF MINES BULLETIN 142, P. 22.

Reference (Deposit): ELSING, M.J., HEINEMAN, R.ES., 1936, ARIZONA METAL PRODUCTION: ARIZONA BUREAU OF MINES BULLETIN 140, P. 104.

Reference (Deposit): JOHNSON, M.G., 1972, PLACER GOLD DEPOSITS OF ARIZONA: U.S.G.S. BULLETIN 1355, P. 73.

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.