Humboldt Mine

The Humboldt Mine is a lead mine located in Santa Cruz county, Arizona at an elevation of 4,902 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: Humboldt Mine

Commodity

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

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.

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Carl Scheler, Patrick Roscoe, Gib And Reuben Mock ?)
Years: 1936 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1887
Year Last Production: 1952
Discovery Year: 1855
Discovery Method: Ore-Mineral In Place
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: TABULAR

Form: TABULAR

Form: TABULAR

Structure

Type: R
Description: Thick-Bedded Coarse Tuffs And Massive Tuff Breccias Associated With The Trench Camp

Type: L
Description: Located On Or Near Contact Between Rhyolite Porphyry And Diorite; Contact Dips 85s

Alterations

Alteration Type: L
Alteration Text: Extensive Surface Oxidation; Strong Pyritization Of Host Rock.

Rocks

Name: Trachyandesite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

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

Name: Trachyandesite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Analytical Data

Analytical Data: ASSAY VALUES AVERAGED 7% PB, 19 OZ./TON AG, 1.5 % ZN, 1% CU, MINOR AU

Materials

Ore: Sphalerite
Ore: Bornite
Ore: Tetrahedrite
Ore: Chalcopyrite
Ore: Pyrite
Ore: Rhodochrosite
Gangue: Limonite
Gangue: Sericite
Gangue: Kaolinite
Gangue: Biotite
Gangue: Alunite

Comments

Comment (Development): OWNERS AND OPERATORS INCLUDED PHELPS DODGE CORP. (1912-?), HUMBOLDT MINING AND REDUCTION CO, C.W. CHAPMAN (1949), G.F. GERRARD (1948); PROPERTIES CONSIST OF THE HUMBOLDT, GOOD LUCK, SILVER LEAF, AND INDIAN CHIEF CLAIMS

Comment (Commodity): LEAD, SILVER, AND COPPER ORES ARE SULFIDE IN LOWER MINE WORKINGS; RHODOCHROSITE OCCURS WITH CHALCOPYRITE AT DEPTH

Comment (Location): NEAR THE HEAD OF ALUM GULCH, ABOUT 1.0 MILE SOUTH OF WORLD'S FAIR MINE ; INFO FROM LAND.ST :(1979)

Comment (Deposit): LENSING QUARTZ VEINS ARE NARROW AND SMALL; FAULT EXPOSED IN TUNNEL WORKINGS STRIKES N50E AND DIPS 87SE; SOME DISSEMINATED CHALCOPYRITE IN WALL ROCK; ONE OF SEVERAL SILICEOUS ZONES BEARING ORES IS 9 FT WIDE AND DIPS 70NE; SHEAR ZONES TEND TO DIP AT HIGH ANGLES (70-80 DEG)

Comment (Workings): DEVELOPMENTS INCLUDED 160 FT SHAFAT INCLINED 80S; 2 TUNNELS ABOUT 1/4 MI TO SW OF SHAFT; 55 FT TUNNEL ABOUT 200 FT TO SW OF OTHER TUNNELS; SEVERAL STOPES

Comment (Geology): TUNNEL WORKINGS ARE ON A SLIP IN RHYOLITE THAT RUNS PARALLEL TO RHYOLITE-DIORITE CONTACT AND DIPS 83NW; SULFIDE ORES ALSO OCCUR AT SURFACE

References

Reference (Deposit): ABGMT-USBM FILE DATA

Reference (Deposit): KEITH, STANTON B., 1975, INDEX OF MINING PROPERTIES IN SANTA CRUZ COUNTY, ARIZONA; ARIZONA BUREAU OF MINES BULLETIN 191, P. 58.

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

Reference (Deposit): KARTCHNER, WAYNE E., 1944, THE GEOLOGY AND ORE DEPOSITS OF A PORTION OF THE HARSHAW DISTRICT, PATAGONIA MOUNTAINS, ARIZONA; PHD THESIS, UNIVERSITY OF ARIZONA, P. 92-94

Reference (Deposit): SHRADER, FRANK C., 1915, MINERAL DEPOSITS OF THE SANTA RITA AND PATAGONIA MOUNTAINS, ARIZONA. USGS BULLETIN 582, P. 251-252

Reference (Deposit): SIMONS FRANKS., 1972, MESOZOIC STRATIGRAPHY OF THE PATAGONIA MOUNTAINS AND ADJOINING AREAS, SANTA CRUZ COUNTY, ARIZONA; USGS PROFESSIONAL PAPER 658-E, P.21-22

Reference (Deposit): SIMONS, FRANKS, 1974 GEOLOGIC MAP AN SECTIONS OF THE NOGALES AND LOCHIEL QUADRANGLES, SANTA CRUZ COUNTY, ARIZONA; USGS MAP I-762 (1=48000)

Reference (Deposit): MOORES, RICHARD C., 1972, THE GEOLOGY AND ORE DEPOSITS OF A PORTION OF THE HARSHAW DISTRICT, SANTA CRUZ COUNTY, ARIZONA; M.S. THESIS, UNIVERSITY OF ARIZONA

Reference (Deposit): ABGMT CLIPPINGS FILE, HUMBOLDT MINING AND REDUCTION CO.

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.