Burcham

The Burcham is a lead, silver, and gold mine located in San Bernardino county, California at an elevation of 2,500 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: Burcham
Secondary: Total Wreck

Commodity

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

Location

State: California
County: San Bernardino
District: Calico

Land Status

Not available

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: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Sonoran Desert

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR

Structure

Type: L
Description: Faults

Alterations

Not available

Rocks

Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene

Analytical Data

Not available

Materials

Ore: Galena
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Cerargyrite
Gangue: Quartz
Gangue: Barite
Gangue: Iron

Comments

Comment (Production): AVG. SMELTER RECOVERY; 11 % PB, 2.05 OZ AG, .404 OZ AU/TON, RECOVERABLE ZINC AND COPPER.

Comment (Deposit): IRREGULAR MASSES IN FAULTED TERTIARY TUFFS, FLOWS, AND BRECCIA. 2 VEINS, BURCHAM VEIN; STRIKES N 70 W, DIPS 35 - 65 S, THICKNESS 3 - 7 FT.. MULCAHY VEIN; 300 - 500 FT. NORTH OF BURCHAM VEIN, IT STRIKES N 45 W, DIPS 65 S, 4 - 30 FT. THICK.

Comment (Workings): CROSSCUT TUNNEL N 15 E FOR 512 FT. 104 FT. FROM PORTAL INTERSECTED BURCHAM VEIN DRIFTS 200 FT SE AND 640 FT. NW, 150 FT. SHAFT AT INTERSECTION OF VEIN, TWO RAISES TO SURFACE. MULCAHY VEIN INTERSECTED BY CROSSCUT TUNNEL, DRIFTS 500 FT. NW AND 240 FT. SE

Comment (Geology): GEOL.DESC: ROCKS COMPRISE A CLOSELY RELATED SERIES OF TERITARY FLOWS AND ASSOCIATED TUFFS, CONGLOMERATES, OR BRECCIA. CUT BY NUMEROUS DIKES AND IRREGULAR INTRUSIONS OF RHYOLITE AND OTHER ROCKS. OLDEST, MOST IMPORTANT ORE-BEARING FORMATION IS AN INTERBEDDED SERIES OF RHYOLITE FLOWS, INCLUDING BRECCIAS, MASSIVE TUFFS, PORPHYRITIC FLOWS, BANDED FLOWS AND WATER-LAID DEPOSITS OF SEVERAL KINDS OF VOLCANIC DEBRIS, INCLUDING WELL-LAMINATED SILTS.

References

Reference (Deposit): TUCKER, W. B. AND SAMPSON, R. J., 1943 , MINERAL RESOURCES, SAN BERNARDINO COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 39 , NO. 4 ; DIV. OF MINES, P. 475 - 476 .

Reference (Production): GOODWIN, J. G., 1957 , P. 619 (SEE REF.)

Reference (Deposit): GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 3 & 4 ; DIV. OF MINES, P. 619

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.