Gibraltar

The Gibraltar is a mercury mine located in Santa Barbara county, California at an elevation of 1,499 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: Gibraltar
Secondary: Falcon
Secondary: Santa Ynez
Secondary: Mc Avoy - Millburn

Commodity

Primary: Mercury

Location

State: California
County: Santa Barbara
District: Los Prietos

Land Status

Not available

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: Gibraltar Mining Co.

Production

Year: 1962
Time Period: To 1962
Material type: HG
Description: Cp_Grade: ^2-10 Lb/Ton

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1939
Discovery Year: 1908
Years of Production:
Organization:
Significant: N
Deposit Size: L

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Los Angeles Ranges

Mineral Deposit Model

Not available

Orebody

Form: LENS

Structure

Type: L
Description: Local Faults And Cross Fractures, Franciscan-Knoxville Contact

Alterations

Alteration Type: L
Alteration Text: Silica Carbonate Alteration Of Serpentine

Rocks

Name: Serpentinite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic

Name: Serpentinite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous

Analytical Data

Not available

Materials

Ore: Cinnabar

Comments

Comment (Workings): PARTIALLY CAVED

Comment (Geology): GEOL.DESC: STRAT. SECTION OVERTURNED AT THE MINE

References

Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252

Reference (Deposit): BAILEY, E. H., USGS, PERSONAL FILES

Reference (Deposit): BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.

Reference (Deposit): RANSOME, A.L. AND KELLOGG, J.L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, V. 35, P. 353-486

Reference (Deposit): 5) TUCKER, W.B., 1925, MINING IN CALIFORNIA, SANTA BARBARA COUNTY: REPT. OF THE STATE MINERALOGIST, V. 21, P. 542-544

Reference (Production): USBM DATA

California Gold

"Where to Find Gold in California" 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 California. Read more: Where to Find Gold in California.