Bunker Hill

The Bunker Hill is a gold mine located in Amador county, California.

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: Bunker Hill
Secondary: Rancheria
Secondary: South Mayflaver
Secondary: Nevada.

Commodity

Primary: Gold
Tertiary: Iron

Location

State: California
County: Amador

Land Status

Land ownership: Private
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: Bunker Hill Mining Co.
Home Office: C/O D. C. Crandall

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1853
Years of Production:
Organization:
Significant: N
Deposit Size: M

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada

Mineral Deposit Model

Not available

Orebody

Form: PINCH AND SWELL

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Greenstone-Quartz Ore Formed By Hydrothermal Alteration Of Greenstone.

Rocks

Not available

Analytical Data

Analytical Data: ORE IN QUARTZ - GREENSTONE VEINS ASSOCIATED UP TO 4 % PYRITE.

Materials

Ore: Gold
Ore: Pyrite
Gangue: Quartz

Comments

Comment (Production): FIRST WORKED IN 1853; DURING 1860'S AND 1870'S ORE YIELDING FROM $50 TO $75 PER TON PRODUCED. BUNKER HILL CONS. MNG. CO. ORGANIZED IN 1899 OPERATED STEADILY UNTIL 1922, PRODUCING 887,585 TONS OF ORE WHICH YIELDED $3,834,550. IDLE SINCE 1922 EXCEPT FOR A SMALL AMOUNT OF WORK IN 1925. TOTAL OF $5,154,382 IN GOLD PRODUCED. PRINCIPAL VEIN IS THE BUNKER HILL, OR HANGING WALL VEIN; OTHERS INCLUDING THE GOUGE VEIN AND THE LAST CHANCE LIE IN THE FOOTWALL. MAY BE THE SHAFT SHOWN IN THE SW 1/4 SE 1/4 SEC. 25 ON USGS QUAD. SUTTER CREEK, CALIF. 1957

Comment (Workings): SHAFT 2800 FT., WINZE TO 3400 FT LEVEL, MAJOR STOPING ABOVE 2400 FT LEVEL; ORE MINED BY SQUARE-SET STOPE AND LATER SHRINKAGE STOPING.

Comment (Geology): GREENSTONE IS META-ANDESITE. ; GEOL.DESC: QUARTZ, GREENSTONE VEIN AVERAGING 5 1/2 FT. IN THICKNESS; SOME BLACK SLATE HEAVILY CHARGED WITH PYRITE AND SOME ARSENOPYRITE; SLATE FOOTWALL, META-ANDESITE HANGING WALL; VEINS IN BOTH HANGING AND FOOTWALLS; IN PLACES SLATE AND GREENSTONE INTERBEDDED AND GREENSTONE ALTERED TO SCHIST; ORE OCCURS IN CRUSHED SLATE GOUGE VEINS, QUARTZ STRINGERS AND LARGE BODIES OF QUARTZ.

Comment (Deposit): ADD. REF. NO. 4. INCLUDES THE BUNKER HILL, MAYFLOWER, AND NEVADA CLAIMS, 76 ACRES

References

Reference (Deposit): LOGAN, C.A., 1934 , MOTHER LODE GOLD BELT OF CAL.: CDM BULL 108 , P. 72 - 74

Reference (Deposit): CARLSON, D.W. AND CLARK, W.B., 1954 , MINES AND MIN. RES. OF AMADOR COUNTY, CAL.: CJMG VOL. 50 , P. 173

Reference (Deposit): USGS FOLIO 63, P. 8, CLAIM SHEET 1, SEC. 1

Reference (Production): LOGAN, C.A., 1934

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.