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Royal-Mountain King Prospect

Plant in Calaveras county in California, United States with commodities Copper, Gold, Lead, Silver
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Land status
  12. Ownership information
  13. Production statistics
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10114469
MRDS ID M006010
MAS/MILS ID 0060090413
Record type Site
Current site name Royal-Mountain King Prospect
Alternate or previous names Lillian, Collar & Elbow Lode
Related records 10028803

Comments on the site names

  • OTHER NAMES:LILLIAN;COLLAR&ELBOW LOAD

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -120.67911, 38.00991 (WGS84)
Elevation 360

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 002 N 012 E 19 California

Commodities

Commodity Importance
Copper Tertiary
Gold Primary
Lead Tertiary
Silver Tertiary

Materials information

Materials Type of material
Arsenopyrite Unknown
Gold Unknown
Pyrite Unknown

Nearby scientific data

Ore Body (1) -120.67911, 38.00991
ListMap

Economic information

Ore body information

  • Strike N40W
    Dip 30E
    Length 1220M
    Width 152M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 UNKNOWN
    Type of Orebody #2 OTHER
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control BEDDING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N40W:30E
    Date of Last Modification 961002

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Deposit size Small
Significant Yes
Mining method Bench (Berm)
Plant type Leach
Milling method Flotation

Land status

Ownership category Unknown

Ownership information

  • Type Owner
    Owner Jv-Mother Lode Gold Mines Consolidated And Fmc
    Home office California
    Year 1991
  • Type Unknown
    Owner Empire Mine
  • Type Unknown
    Owner Royal
  • Type Unknown
    Owner Cleveland
  • Type Unknown
    Owner Royal Mine Seq No. 0060090410
  • Type Unknown
    Owner Pine Log

Production statistics

  • Year 1989
    Description Cil Mill 1103700 G Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1103700g/mt

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Indicated 9902777mt ore
    Demonstrated 9902777mt ore
    Total resources 9902777mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.297 g/mt Gold Major 1990
  • Type In-situ
    Estimate year 1994
    Measured 570mt ore
    Demonstrated 570mt ore
    Total resources 570mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.8 g/mt Gold Major 1994

Comments on the reserve resource information

  • IF A SHALLOW RESERVE OF AT LEAST 4,535,000 MT AT A GRADE OF 3.43 GM AU/MT OR BETTER IS FOUND IT IS ANTICIPATED THAT THE DEPOSIT WOULD BE EXPLOITED BY SURFACE MINING METHODS. IT IS ESTIMATED THAT MINE DILUTION WOULD BE AT LEAST 15 PERCENT, RESULTING IN A RECOVERABLE TONNAGE OF 5,215,000 MT AT A GRADE OF ABOUT 2.98 GM AU/MT.
  • ANALYZED FOR COSTS BUT NOT INCLUDED IN AVAILABILITY CURVE FOR 1984 STUDY. AS OF 1988- PROPERTY IN DEVELOPMENT WITH EXPECT- ED STARTUP IN 1ST QTR.1989 AT 60,000 OZ.AU/YR LEVEL. 1989 PROD. WAS 39,500 OZ. FROM 880,000 MT ORE. 1989 RESERVE = 441,000 OZ.CONT.AU. PEFR SCHEDULED FOR DELIVERY MID-APRIL,1991. WILL BE INCLUDED IN 1992 AU AVAILABILITY STUDY. MINE SCHEDULED TO CLOSE LATE 1994.
  • THE MINE SHUT DOWN IN JULY 1994 DUE TO THE DEPLETION OF THE ORE BODY.

Comments on the workings information

  • PROCESS CONSISTS OF FLOTATION AND CIL CIRCUIT. LOW-GRADE ORE IS STOCKPILED FOR FUTURE CONSIDERATION AND POSSIBLE HEAP LEACHING. AVERAGE GRADE OF ORE IS 0.06 OZ/T AU AND 0.10 OZ/T AG. THREE DISTINCT TYPES OF ORE EXIST.

Comments on other economic factors

  • THERE IS PRESENTLY NO PROCESSING PLANT AND ONLY IF SUFFICIENT RESERVES ARE FOUND AND THE PROJECT IS ECONOMICALLY FEASIBLE WILL A MILL BE CONSTRUCTED. PRESENT PLANNING IS FOR A 1810 MT/DAY MILL TO BE COMPLETED IN LATE 1985 OR EARLY 1986. HISTORICALLY ORE FROM THIS SITE HAD AN APPROXIMATE GOLD-SILVER RATIO OF 4:1.
  • THE PLANNED CAPACITY OF THE ROYAL-MOUNTAIN KING PROJECT IS PRESENTLY 662,000 MT/YR.

Reference information

Bibliographic references

  • Reserve-Resource

    FMC GOLD CO. 1994 ANNUAL REPORT, P.7.

  • Reserve-Resource

    FMC GOLD CO. 1995 ANNUAL REPORT, P.7.

  • Deposit

    CALIF B 144,P 221,V 32,NO 3,P 277;REPT 21,P 155-6;EC MINERAL

  • Deposit

    6,E & MJ V 160,NO 2,FEB 1959;P 187-8;CALIF V 53,NOS 3 & 4,P

  • Deposit

    MINERAL MAP.NO 7,1957;COUNTY REPT NO 2,P 64-65,169,& PL B;GQ

  • Deposit

    MORRISON-KNUDSON COMPANY, INC.-MINING GROUP. MINE DEPOSIT

  • Deposit

    FILE REPORT. ROYAL-MOUNTAIN KING PROSPECT, MOTHER LODE GOLD

  • Deposit

    MINES CONSOLIDATED, COPPEROPOLIS, CALIFORNIA, FINAL REPORT.

  • Deposit

    USBM CONTRACT NO. S0221028, AUGUST, 1983.

  • Deposit

    WORLD MINING. MUCH LOW GRADE ORE AT ROYAL-MOUNTAIN KING.

  • Deposit

    NOV. 1982, P. 63.

  • Deposit

    THE MINING RECORD. PERMIT OBTAINED TO START GOLD MINING OP-

  • Deposit

    ERATIONS. SEPT 15, 1982.

  • Deposit

    MINING ENGINEERING. CALIFORNIA-PRECIOUS METALS. MAY 1983.

  • Deposit

    P. 146.

  • Deposit

    THE MINING RECORD. GOLD ORE DISCOVERED IN NORTHERN CALIFOR-

  • Deposit

    NIA. APRIL 29, 1981. P. 1.

  • Deposit

    THE MINING RECORD CALIFORNIA GOLD MINERS READY FOR SECOND

  • Deposit

    GOLD BOOM. JUNE 10, 1981, P. 7.

  • Deposit

    MINING CONGRESS JOURNAL. JOINT VENTURE FORMED FOR ROYAL

  • Deposit

    MOUNTAIN KING GOLD PROJECT. NOV. 1982, P. 8.

  • Deposit

    MORRISON-KNUDSON. SALES CONTRACT REPORT-MOTHER LODE MINES

  • Deposit

    CONSOLIDATED. DEC. 20, 1982.

  • Deposit

    KNOPF, A. THE MOTHER LODE SYSTEM OF CALIFORNIA. USGS PP NO.

  • Deposit

    157, 1929, PP. 23-76.

  • Deposit

    CALIFORNIA DIVISION OF MINES AND GEOLOGY. MINES AND MINERAL

  • Deposit

    RESOURCES OF CALAVERAS COUNTY, CALIFORNIA. REPORT NO. 2.

  • Deposit

    1963. PP. 17,64,65,68,69.

  • Deposit

    CALIFORNIA JOURNAL OF MINES AND GEOLOGY. VOL. 53, NO.S 1 AND

  • Deposit

    2, JAN-APRIL, 1957 PP. 432,437.

  • Deposit

    USBM, GOLD RESOURCES OF HE MOTHER LODE BELT, EL DORADO,

  • Deposit

    AMADOR, CALAVERAS, TUOLUMNE, AND MARIPOSA COUNTIES, CALI-

  • Deposit

    FORNIA. HEAVY METALS PROGRAM, SITUATION REPORT, APRIL 1968.

  • Deposit

    CALIF. DIV. MINES AND GEOL. SPECIAL PUBLICATION 103, 1990.

  • Deposit

    ALSO LOCATED IN SECTION 30.

  • Deposit

    PROPERTY EVALUATION FILE REPORT, 4-91.

  • Deposit

    AMERICAN MINES HANDBOOK 1993, P.77.

  • Deposit

    MINING ENGINEERING, V 45 N12, 12-93, P.1463.

  • Deposit

    ROCKY MTN PAY DIRT, 11-93, P.16A.

  • Deposit

    FMC GOLD CO. NEWS RELEASE, 4-90 AND 10-90.

General comments

Subject category Comment text
Deposit RECLAMATION OF THE MINE BEGAN 8-94, THE PROCESSING FACILITY WAS SOLD 1-95. THE RECLAMATION PROCESS WILL CONTINUE WITH THE THE MAJORITY OF SPENDING COMPLETED BY 1998.

Reporter information

Type Date Name Affiliation Comment
Reporter 02-OCT-1996 Longwill U.S. Bureau of Mines

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.