Hearst Group

The Hearst Group is a silver, copper, and silica mine located in Cochise county, Arizona.

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: Hearst Group
Secondary: Hearst Mine

Commodity

Primary: Silver
Primary: Copper
Primary: Silica
Secondary: Gold

Location

State: Arizona
County: Cochise
District: Winchester District

Land Status

Land ownership: State
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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
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

Form: TABULAR

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Qtz-Ser-Pyr, Py Gossan

Rocks

Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Late Permian

Analytical Data

Not available

Materials

Ore: Malachite
Ore: Gold

Comments

Comment (Location): INFO FROM LAND.ST :(1979)

Comment (Production): PAST PRODUCTION OF SILICA FLUX.

Comment (Deposit): JASPEROID MASSES IN LIMESTONE. LARGEST MASS IS 100 FT SIDE BY 200 FT LONG.

References

Reference (Deposit): ABM BULL 187, 1973, P. 91.

Reference (Deposit): USGS PP 416, P. 161.

Reference (Deposit): PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

Reference (Deposit): PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERAL CARD FILE.

Reference (Other Database): CIMRI

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.