Blue Ledge

The Blue Ledge is a copper and zinc mine located in Siskiyou county, California at an elevation of 5,000 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

Name: Blue Ledge  

State:  California

County:  Siskiyou

Elevation: 5,000 Feet (1,524 Meters)

Commodity: Copper, Zinc

Lat, Long: 41.95, -123.10000

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 Blue Ledge

Blue Ledge MRDS details

Site Name

Primary: Blue Ledge


Commodity

Primary: Copper
Primary: Zinc
Secondary: Silver
Secondary: Gold
Secondary: Lead


Location

State: California
County: Siskiyou
District: Elliott Creek


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

Year: 1920
Time Period: 1920
Material type: ORE
Description: Cp_Grade: ^4.8 % Cu, .35 Oz/Ton Au, 1.5 Oz/Ton Ag


Deposit

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


Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Klamath Mountains


Mineral Deposit Model

Model Name: Massive sulfide, kuroko


Orebody

Form: LENTICULAR


Structure

Not available


Alterations

Alteration Type: L
Alteration Text: Quartz-Sericite


Rocks

Not available


Analytical Data

Not available


Materials

Ore: Pyrrhotite
Ore: Pyrite
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Galena
Ore: Limonite
Ore: Malachite
Gangue: Calcite
Gangue: Quartz
Gangue: Tourmaline
Gangue: Biotite


Comments

Comment (Production): AVERAGE SMELTER RECOVERY; 2.7 % ZN, 14 % CU, 5.8 OZ/TON AG AND .09 OZ/TON AU. MINOR LEAD RECOVERED.

Comment (Workings): PAY SHOOT 1500 FT. LONG AND 5 FT. WIDE DEVELOPED FOR LENGTH OF 1800 FT. AND DEPTH OF 600 FT. BY SERIES OF ADITS AND DRIFTS.

Comment (Geology): GEOL.DESC: FOOTWALL IS GRAY TO BLACK MICACEOUS SCHIST HANGING WALL IS WHITE MICA SCHIST.


References

Reference (Deposit): AVERILL, C. V., 1935 , MINES AND MINERAL RESOURCES OF SISKIYOU COUNTY; JOUR. MINES AND GEOLOGY; VOL. 31 , NO. 3 , P. 271 - 272

Reference (Deposit): GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA; JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 3 & 4 P. 701.

Reference (Deposit): O'BRIEN, J. C., 1947 , MINES AND MINERALS OF SISKIYOU COUNTY: JOUR. MINES AND GEOLOGY VOL. 43 , NO. 4 , P. 424.

Reference (Production): GOODWIN, J. G., 1957 , (SEE REF.)


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