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Royal Mine

Past Producer in Calaveras county in California, United States with commodities Gold, Silver, Lead, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10102647
MRDS ID M006009
Record type Site
Current site name Royal Mine
Alternate or previous names Emma, Goodenough Royal Lode, Royal Mine Extension, Pine Log, Ant Hill, Railsplitter, Quartz
Related records 10235477

Geographic coordinates

Geographic coordinates: -120.68962, 38.0013 (WGS84)
Relative position 2 1/2 MI NW OF COPPEROPOLIS

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Salt Spring Valley(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower San Joaquin River(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002N 012E 19,29,30 California

Comments on the location information

  • UTM EST. NE 1/4 30

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Zinc Critical Tertiary

Comments on the commodity information

  • 60 % AU IS FREE, REST IS W SULFIDES.

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore
Ankerite Gangue
Calcite Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Hydrothermal Altered Greenstone

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -120.68962, 38.0013
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Hodson Fault Zone

Ore body information

  • Strike N 50 W
    Dip 30 NE
    Thickness 6.1M

Comments on the geologic information

  • 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.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Comments on the production information

  • 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.

Workings at the site

  • Type of workings Surface/Underground
    Area 38.447HA
    Overall depth 304.8M

Comments on the workings information

  • 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.

Reference information

Bibliographic references

  • 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

  • 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

  • Deposit

    ENGINEERING AND MINING JOURNAL, V.160, NO.2, FEB.195 9, P.187-188

  • Production

    CLARK & FRANKE, 1962 ; LOGAN, 1936

General comments

Subject category Comment text
Deposit VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1979 Hayden, F. (Albers, J.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.