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
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.
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" 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.
