Hermosa Mine

The Hermosa Mine is a silver and manganese mine located in Santa Cruz county, Arizona at an elevation of 5,400 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: Hermosa Mine

Commodity

Primary: Silver
Primary: Manganese
Tertiary: Gold
Tertiary: Molybdenum
Tertiary: Lead
Tertiary: Copper

Location

State: Arizona
County: Santa Cruz
District: Harshaw 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.
Administrative Organization: Coronado National Forest

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Grover Marsteller )
Years: 1950 -

Production

Year: 1950
Time Period: 1870-1950
Material type: ORE
Description: Cp_Grade: ^20 Oz/T Ag

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1878
Year Last Production: 1950
Discovery Year: 1877
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: IRREGULAR, TABULAR

Structure

Type: R
Description: Rhyolite Is Crushed, Recemented, And Locally Closely Banded By Flow Structure

Type: L
Description: Deposit Occurs In More Or Less Tabular Sheet Contained In Fault Breccia Zone

Alterations

Alteration Type: L
Alteration Text: Oxidized Extensively

Rocks

Name: Pyroxenite
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic

Name: Pyroxenite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Analytical Data

Not available

Materials

Ore: Cerargyrite
Gangue: Limonite
Gangue: Hematite
Gangue: Psilomelane

Comments

Comment (Development): PREVIOUS OWNERS INCLUDE HERMOSA MINING CO, PRIETUS MINES CO, FINLEY, HERMOSA MINING AND MILLING CO, JAMES COCHRAN (06), A.R. BYRD (1941), E. BOLINGER

Comment (Deposit): THIS REPORT WAS TAKEN FROM RECORD M030389 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEODORE, USGS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Workings): INCLINED SHAFT AND TUNN WORKINGS; 5 LEVELS 50 FT APART VERTICALLY.

Comment (Location): LOCATED INCORRECTLY BY USGS ON TOPO SHEET. IT IS REALLY SE OF WHERE SHOWN;. INFO FROM LAND.ST :1979

Comment (Production): PRODUD IN 1870'S-1900, 1908, 1949-50; FROM 1880-1930 PRODUCED $1 MILLION IN SILVER.

References

Reference (Deposit): KEITH, 1975, ABM BULL 191.

Reference (Deposit): ELSING AND HEINEMAN, 1936, ABM BULL 140.

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

Reference (Deposit): ABGMT CLIPPINGSILE, HERMOSA MINE.

Reference (Deposit): ABGMT FILES, STANTON B. KEITH.

Reference (Deposit): ABGMT-USBM FILE DATA.

Reference (Deposit): ABGMT

Reference (Deposit): USGS

Reference (Production): KEITH, 1975; ELSING AND HEINEMAN, 1936

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.