The Royal Mine is a gold mine located in Calaveras 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.
Royal Mine MRDS details
Site Name
Primary: Royal Mine
Secondary: Emma
Secondary: Goodenough Royal Lode
Secondary: Royal Mine Extension
Secondary: Pine Log
Secondary: Ant Hill
Secondary: Railsplitter
Secondary: Quartz
Commodity
Primary: Gold
Secondary: Silver
Secondary: Lead
Tertiary: Zinc
Location
State: California
County: Calaveras
Land Status
Not available
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: 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
Type: L
Description: Hodson Fault Zone
Alterations
Alteration Type: L
Alteration Text: Hydrothermal Altered Greenstone
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Galena
Ore: Gold
Ore: Pyrite
Gangue: Calcite
Gangue: Quartz
Gangue: Ankerite
Gangue: Sericite
Comments
Comment (Production): MOST PRODUCTIVE MINE OF THE WEST GOLD BELT, IN 1932 - 1942. PERIOD UP TO 65 TONS ORE PROCESSED IN 24 HR PERIOD. MOST EXTENSIVE PRODUCTION FROM 1895 - 1905 . NO OVERALL PRODUCTION FIGURES FOUND. YUBA MINING DIV. OF YUBA CONS. WAS TO HAVE CONDUCTED DIAMOND DRILLING ON PROPERTY TO TEST FEASIBILITY OF OPEN PIT MINING.
Comment (Deposit): VEIN
Comment (Geology): 16 FT. THICK MAIN VEIN, ROYAL VEIN, IN ZONE OF PARALLEL, OVERLYING AND CROSS VEINS. QTZ OCCURS IN A SERIES OF LARGE LENSES IN A DIKE OF DIABASE. ROYAL FISSURE VEIN OFTEN HAS SEAMS OF CALCITE RUNNING THRU IT. GREENSTONE & SCHIST IS OFTEN MINERALIZED, SIMILAR TO "GRAY ORES" OF AMADOR CO. MINERALIZED ZONE IS 500 OR MORE FT. THICK & NEARLY 4000 FT. LONG. AT LEAST 5 QZ VEINS RANGE FROM A FEW TO 20 FT. THICK.
Comment (Workings): 1200 FT. INCLINED SHAFT W LEVELS EACH 100 FT. ALSO 125 FT. GOODENOUG SHAFT. 1000 FT. DRIFT FROM 700 LEVEL. WORKED OUT BETWEEN 700 & 1200 FT. LEVELS BY 1905 . IN 1955 - 1956 , DRILLED TO 1000 FT.
Comment (Commodity): 60 % AU IS FREE, REST IS W SULFIDES.
Comment (Location): UTM EST. NE 1/4 30
References
Reference (Deposit): CLARK, W. B., & LYDON, P. A.,1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF.: CALIF. DIV. MINES & GEOL., COUNTY REPORT 2. P. 68 , 69 , 178 , CROSS SECTION P. 68
Reference (Deposit): LOGAN, C. A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS CO.: CDM CALIF. JOUR. MINES & GEOL., VOL. 32 , NO. 3 , P. 285 , 286 & 287
Reference (Deposit): ENGINEERING AND MINING JOURNAL, V.160, NO.2, FEB.195 9, P.187-188
Reference (Production): CLARK & FRANKE, 1962 ; LOGAN, 1936
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.
