The Jumbo is a gold mine located in Amador 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.
Jumbo MRDS details
Site Name
Primary: Jumbo
Commodity
Primary: Gold
Tertiary: Copper
Location
State: California
County: Amador
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Behrend Deecher, George Viscovich, Steve Miloservich
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1950
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
Not available
Materials
Ore: Gold
Ore: Pyrite
Ore: Chalcopyrite
Ore: Malachite
Gangue: Quartz
Comments
Comment (Location): SW 1/4 OF SEC 26
Comment (Geology): GEOL.DESC: QUARTZ STRINGERS 1 TO 3 IN AND QUARTZ POCKETS IN 6 FT WIDE MINERALIZED ZONE; THE VEIN OUTCROPS FOR 3000 FT., IS VERTICAL BUT DIPS WEST AT THE NORTH END OF THE EXPOSURE.
Comment (Workings): 4 CLAIMS; 2 ADITS 20 , 65 FT., OPEN-CUT 20 FT.
Comment (Commodity): GOLD OCCURS WITH QUARTZ, SOME PYRITE, AND LESS CHALCOPYRITE AND MALACHITE.
Comment (Production): NO PRODUCTION RECORDED, BUT GOLD ASSAY VALUES WERE $ 12 / TON ON PARTS OF VEIN IN SECOND ADIT, $ 12 / TON IN OPEN CUT, AND $ 121 / TON IN MAIN ZONE IN LOWER LEVEL. HANGING WALL SAMPLES IN GRANITE VARIED BETWEEN $ 14 AND $ 28 / TON.
References
Reference (Deposit): CARLSON, D.W. AND CLARK, W.B., 1954 , MINES AND MIN. RES. OF AMADOR COUNTY, CAL: CJMG VOL. 50 , P. 182
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.
