Iron Dike

The Iron Dike is a copper mine located in Plumas county, California at an elevation of 4,199 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: Iron Dike
Secondary: Copper Bull
Secondary: Iron Dyke
Secondary: Montgomery

Commodity

Primary: Copper

Location

State: California
County: Plumas
District: Taylorsville

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

Not available

Production

Not available

Deposit

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

Physiography

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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Analytical Data: PETTINGER VEIN: 12 % CU,

Materials

Ore: Malachite
Ore: Chalcopyrite
Gangue: Quartz

Comments

Comment (Deposit): TWO MAJOR VEINS; PETTINGER VEIN, AN IMPERFECT QUARTZ VEIN IN SLATE, STRIKING N 54 W, DIPS 50 SW, LENGTH PROVEN ON SURFACE 2500 FT. THE IRON DIKE VEIN, A SOLID NON-NICKELIFEROUS PYRRHOTITE IN SHEAR ZONE OF SANDSTONE NEAR WITH SERPENTINE, AND MONTGOMERY LIMESTONE OF THE GRIZZLY FORMATION AND TAYLOR CONGLOMERATE. VEIN VARIES FROM 10 - 50 FT. IN WIDTH, STRIKES N 13 W, DIPS 50 SW., WITH PROVEN LENGTH OF 2500 FT., TWO VEINS INTERSECT. ORE OCCURS AT INTERVALS-NOT WELL DEFINED SHOOTS.

Comment (Workings): MAIN TUNNEL NOW ( 1928 ) IN 700 FT. IS 200 FT. BELOW SURFACE IN PARTLY OXIDIZED MATERIL - OTHER TUNNELS AGGREGATE 2000 FT., ONE 60 FT. SHAFT ON PETTINGER VEIN. NEW WORKINGS ( 1936 ) INCLUDE A TUNNEL WHICH RUNS EAST AND STRIKES FOUR VEINS, FIRST ONE AT 350 FT. SECOND AT 400 FT., THIRD AT 450 FT., FOURTH AT 500 FT. SOME DRIFTING ON SECOND VEIN FOR ABOUT 300 FT., ALONG WITH A RAISE OF 30 FT. SOME CHALCOPYRITE ON THIRD VEIN.

Comment (Geology): GEOL.DESC: HANGING (?) WALL-LIMESTONE, FOOT (?) WALL SANDSTONE AND FINE CONGLOMERATE. COUNTY ROCK IN WHICH FOUR SMALLER VEINS FOUND-SAID TO PROBABLY BE META-ANDESITE.

Comment (Deposit): COMPRISED OF 160 ACRES.

References

Reference (Deposit): AVERILL, C.V., 1937 , MINERAL RESOURCES OF PLUMAS COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 33 , NO. 2 ; DIV. OF MINES, P. 95

Reference (Deposit): MAC BOYLE, E., 1918 , PLUMAS COUNTY; 16TH REPT. STATE MIN.; CALIF. MIN. BUR., P. 135 - 136

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.