Four Hills

The Four Hills is a gold mine located in Sierra 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

Name: Four Hills  

State:  California

County:  Sierra

Elevation:

Commodity: Gold

Lat, Long: 39.69861, -120.70972

Map: View on Google Maps

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.


Satelite image of the Four Hills

Four Hills MRDS details

Site Name

Primary: Four Hills


Commodity

Primary: Gold
Tertiary: Lead
Tertiary: Copper


Location

State: California
County: Sierra


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: Surface/Underground


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: Y
Deposit Size: S


Physiography

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


Mineral Deposit Model

Model Name: Low-sulfide Au-quartz vein


Orebody

Not available


Structure

Not available


Alterations

Not available


Rocks

Name: Mafic Intrusive Rock
Role: Host
Age Type: Host Rock
Age Young: Late Permian


Analytical Data

Not available


Materials

Ore: Pyrite
Ore: Chalcopyrite
Ore: Gold
Ore: Galena
Gangue: Quartz


Comments

Comment (Location): UTM ACC. MINE SHAFT SHOWN ON TOPO. SHEET IN NE 1/4 10 .

Comment (Production): PRODUCTION FROM SPANISH TIMES ONWARD, INTERMITTENTLY. TOTAL ESTIMATED FROM $1 - 3.3 MILLION.

Comment (Deposit): POCKETS, VEIN, ORE SHOOTS

Comment (Geology): LARGE BODIES OF QTZ. FORMED BY INTERSECTION OF VEINS. E STRINGERS INTERSECTION W. MAIN VEIN, WHICH VARIES FROM 1 - 20 FT., AVE. 4 - 5 FT. THICK. ON THE N END VEIN STRIKES E, ON THE S END N. VEIN SAID TO RESEMBLE PLUMAS EUREKA.

Comment (Commodity): MOST ORE FROM POCKETS OR SMALL RICH ORE SHOOTS. POCKETS RANGE FROM $1500 - 6000 , NEAR SURFACE. ALSO HIGH GRADE OCCURS WHERE THE VEIN COMES IN CONTACT W MICA SCHIST & WHERE VEINLETS LEAVE THE MAIN VEIN & BUTT AGAINST AND ARE CUT OFF BY MICA SCHIST.

Comment (Workings): SHAFT ADIT 1100 FT. INTERSECTS SHAFT AT 150 FT. SURFACE & NEAR SURFACE POCKETS MINES.


References

Reference (Deposit): AVERILL, C. V., 1942 , MINES AND MINERAL RESOURCES OF SIERRA CO.: CDM CALIF. JOUR. MINES AND GEOL., VOL. 38 , NO. 1 , P. 55 .

Reference (Deposit): LOGAN, C. A., 1929 , SIERRA CO.: CDMM 25TH REPORT STATE MINERALOGIST, APRIL, P. 164 , 165 , 177 .

Reference (Deposit): MACBOYLE, E., 1920 , MINES AND MINERAL RESOURCES SIERRA CO.: CSMB 16TH REPORT STATE MINERALOGIST, DEC. 1918 , P. 87 , 88 .

Reference (Production): LOGAN, 1929


California Gold

Where to Find Gold in California

"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.