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Colosseum Mine

Plant in San Bernardino 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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mineral rights holdings
  11. Land status
  12. Ownership information
  13. Production statistics
  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 10188756
MRDS ID W700581
MAS/MILS ID 0060710082
Record type Site
Current site name Colosseum Mine
Alternate or previous names Colosseum
Related records 10085071

Geographic coordinates

Point of reference Pit
Geographic coordinates: -115.56664, 35.57 (WGS84)
Elevation 1780
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

San Bernardino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Clark Mountain(quadrangle 1:24,000 scale)

Mesquite Lake(quadrangle 1:100,000 scale)

Kingman(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Death Valley-Lower Amargosa(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California San Bernardino

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 017 N 013 E 10 SW California

Commodities

Commodity Importance
Copper Secondary
Gold Primary
Lead Secondary
Silver Secondary

Nearby scientific data

Pit (1) -115.56664, 35.57
ListMap

Economic information

Ore body information

  • Thickness 700M
    Length 300M
    Width 420M
    Depth to top 0M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 BRECCIA FILL
    Shape of Orebody #1 PIPELIKE
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 SILICIFICATION
    Type of Wallrock Alter. #2 DOLOMITIZATION
    Type of Wallrock Alter. #3 PYRITIZATION
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 1
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 971031

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Mining method Open Pit
Year of first production 1987
Plant type Leach
Milling method Hydrometallurgy Unspecified

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Located Claim

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Barrick Gold Corp. (American Barrick Resources Corp.)
    Interest 100
    Year 1996
  • Type Operator
    Owner Lac Minerals U. S., Inc.
    Home office Nevada
    Year 1996
  • Type Owner-Operator
    Owner Bond Gold Corp.
    Interest 100
    Home office Colorado
    Year 1989
  • Type Owner-Operator
    Owner Colosseum Gold, Inc.
    Interest 100
    Home office California
    Year 1987
    First year 1987
  • Type Owner
    Owner Dallhold Investments Of Australia (Owner Of Colosseum)
    Interest 100
    Home office Australia
    Year 1987
    First year 1987

Production statistics

  • Year 1993
    Description Gold Production 27131 Troy Ounces Gold
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 843868.54g

Comments on the production information

  • MILLING ORE. FULL CAPACITY = 1,110,000 MT ORE/YR. 1989 PRODUCTION = 75,473 OZ. AU FROM MILLING 1,090,000 MT ORE.

Comments on the reserve resource information

  • 1987 PRODUCTION, MINE RUN ORE. 1987 PRODUCTION, LOW GRADE TO STOCKPILE. 1988 PRODUCTION, MINE RUN ORE. 1988 PRODUCTION, LOW GRADE TO STOCKPILE. 1989 PRODUCTION, MINE RUN ORE. 1989 PRODUCTION, LOW GRADE TO STOCKPILE. 1990 PRODUCTION, MINE RUN ORE. 1990 PRODUCTION, LOW GRADE TO STOCKPILE. 1991 PRODUCTION, MINE RUN ORE. 1991 PRODUCTIN, LOW GRADE TO STOCKPILE. 1992 PRODUCTION, MINE RUN ORE. 1992 PRODUCTION, LOW GRADE TO STOCKPILE. 1993 PRODUCTION, MINE RUN ORE. 1993 PRODUCTION, LOW GRADE TO STOCKPILE. 1994 PRODUCTION, MINE RUN ORE. 1994 PRODUCTION, LOW GRADE TO STOCKPILE. 1995-1996 PROD. MINE RUN ORE. 1995-1996 PROD., LOW GRADE TO STOCKPILE. 1997 PRODUCTION, MINE RUN ORE. 1997 PRODUCTION, LOW GRADE TO STOCKPILE.

Workings at the site

  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 76.3
    Avg. Overburden Thickness 1
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 900
    Unit Production Cost 7.66
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 74.4
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 7.62
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 3
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 79.1
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 8.99
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 4
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 82.8
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 10.05
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 5
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 85.5
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 10.72
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 6
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 84.5
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 10.93
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 7
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 79.9
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 9.23
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 8
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 71.4
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 7.78
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 9
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 63.8
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 6.78
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1989
  • Type of workings Surface
    Area 50HA
    Field Value
    MAS Development Schedule # 2
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 63.8
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 52
    Capacity 3084
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 1.87
    Units of Production $/MT ORE
    Operating Days per Year 152
    Operating Shifts per Day 3
    Year of Information 1989

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 49, 1953, TABULATED LIST,

  • Deposit

    NO. 82, P. 30.

  • Deposit

    U.S. GEOLOGICAL SURVEY PROF. PAPER 275, 1956, P. 125.

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 53, 1957, P. 624-625.

  • Deposit

    U.S. BUREAU OF MINES, 1990, MINERAL INVESTIGATION OF THE EAST

  • Deposit

    MOJAVE NATIONAL SCENIC AREA, SAN BERNARDINO COUNTY,

  • Deposit

    CALIFORNIA: TABLE 2, NO. 37, P. 63.

  • Deposit

    LAC MINERALS LTD. ANNUAL REPORT 1993. P. 22.

General comments

Subject category Comment text
Deposit MINE WAS A SMALL UNDERGROUND OPERATION THAT CLOSED IN 1942 WAS RE-OPENED AS AN OPEN PIT MINE IN 1987-1988. MINING COMPLETED IN 7-92. PRODUCTION THRU 93 FROM STOCKPILES.
Environmental Factors FIVE-STRAND BARBED WIRE FENCE AROUND THE TAILINGS POND. CHAIN LINK FENCE AROUND THE TWO SEEPAGE PONDS. WILDLIFE MORTALITIES HAVE NOT BEEN A PROBLEM TO DATE.
Environmental Factors TAILINGS HAVE < O.5 PPM TOTAL CN IN LIQUIDS AND SOLIDS.

Reporter information

Type Date Name Affiliation Comment
Reporter 31-OCT-1997 Wetzel, Nicholas 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.