Hancock Mine

The Hancock Mine is a silver mine located in Pima county, Arizona at an elevation of 5,561 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: Hancock Mine

Commodity

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

Location

State: Arizona
County: Pima
District: Greaterville 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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Year: 1885
Discovery Method: 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

Type: R
Description: Homoclinal ; Reg.Trends: Tilting And Broad Open Folds In S. And Extensive Faulting In N.

Type: L
Description: Thrust And Normal Faulting -Fracture Zones.

Alterations

Not available

Rocks

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age in Years: 26.000000+-2.000000
Age Young: Oligocene

Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cretaceous

Analytical Data

Not available

Materials

Ore: Cerargyrite
Ore: Galena

Comments

Comment (Geology): MAJOR.UNITS: BASIN AND RANGE. ; GEOL.DESC: AGE OF MINERALIZATION BELIEVED TO BE THAT OF THE QUARTZ LATITE INTRUSIVE OF DREWES - 1971. ; REG.COM: STRUCTURE IN DISTRICT IS THRUST FAULTING AND HIGH ANGLE NORMAL FAULTING AND FOLDING.

Comment (Workings): SHAFT

Comment (Deposit): THE STRATIGRAPHIC UNITS USED ARE THOSE OF H. DREWES - 1971, USGS MAP I-613. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Location): E CENTRAL SECTION 14.

Comment (Production): SMALL TONNAGE OF HIGH-GRADE PB-AG ORE IN 1880'S.

References

Reference (Deposit): DREWES, H., 1971, USGS MAP I-613 (SAHUARITA QUAD).

Reference (Deposit): SCHRADER, F.C., 1915 USGS BULL. 582.

Reference (Deposit): DREWES, H., 1970, USGS BULL. 1312A.

Reference (Deposit): KEITH, S.B., 1974, ABM BULLETIN 189, P. 121.

Reference (Deposit): 1909 RECON F.C. SCHRADER, U.S.G.S. BULL. 582

Reference (Deposit): 1971 GEOLMAP H. DREWES, U.S.G.S. MAP I-613.

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.