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Ropes

Plant in Marquette county in Michigan, United States with commodities Gold, Silver
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Geologic information

Identification information

Deposit ID 10219091
MRDS ID W700455
MAS/MILS ID 0261030124
Record type Site
Current site name Ropes
Related records 10085023

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -87.71672, 46.5361 (WGS84)
Elevation 410
Location accuracy 100(meters)
(click for info)

Geographic areas

Country State County
United States Michigan Marquette

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Gold Unknown
Pyrite Unknown
Silver Unknown

Nearby scientific data

Main Entrance (1) -87.71672, 46.5361
ListMap

Ore body information

  • Strike N70E
    Dip 90E
    Thickness 15M
    Depth to top 10M
    Width 580M
    Length 590M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SHEAR ZONE
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control LITHOLOGY
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 SILICIFICATION
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Type of Wallrock Alter. #3 PYRITIZATION
    Strike And Dip N70E
    Avg. Thick. Unconsol. Mat. 6
    Date of Last Modification 890724
  • Area 47HA
    Field Value
    Total Surface Area (HA) 47
    Date of Last Modification 910418

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1880
Mining method Open Stope
Year of first production 1882
Plant type Leach
Milling method Flotation

Mining district

District name Lake Superior

Mineral rights holdings

Type of mineral rights Fee Ownership

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Coeur D'Alene Mines Corp.
    ID `002574
    Interest 100
    Home office Idaho
    Year 1994

Comments on the ownership information

  • RESOURCES EXPLORATION, INC. MAY HAVE AN INTEREST IN THE OWNERSHIP OF ROPES.

Production statistics

  • Year 1985
    Description 154 Kg, Au & 105 Kg, Ag 189000 Mt/Year, Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 105,000g
    Major Gold Gold 154,000g
  • Year 1986
    Description 1434 Kg, Au & 1720 Kg, Ag 567000 Mt/Year, Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 1,720,000g
    Major Gold Gold 1,434,000g
  • Year 1987
    Description 1351 Kg, Au & 1829 Kg, Ag 607000 Mt/Year, Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 1,829,000g
    Major Gold Gold 1,351,000g
  • Year 1988
    Description 1350 Kg, Au & 1413 Kg, Ag 649000 Mt/Year, Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 1,413,000g
    Major Gold Gold 1,350,000g
  • Year 1989
    Description Production For Jan - Apr 194000 Mt/Year, Ore

Comments on the production information

  • THE DORE BULLION CONTRIBUTES 97% OF THE REFINED GOLD PRODUCT & 80% OF THE REFINED SILVER PRODUCT; WHEREAS THE PYRITE RE-FLOT. CONCENTRATE CONTRIBUTES 3% OF THE REFINED GOLD & 20% OF THE REFINED SILVER PRODUCTS.
  • PRODUCTION FOR 1882-97 IS 933 KG OF GOLD BULLION AND 1866 KILOGRAMS AG BULLION. TOTAL ORE PRODUCTION TONNAGE IS APPROX. 180,000 MT.

Reserves and resources

  • Type In-situ
    Estimate year 1945
    Inferred 1,361,000mt ore
    Total resources 1,361,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 4.062 g/mt Gold Major 1945
    Silver Ag 21.87 g/mt Silver Minor 1945
  • Type In-situ
    Estimate year 1988
    Demonstrated 1,194,000mt ore
    Indicated 1,194,000mt ore
    Total resources 1,194,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.81 g/mt Gold Major 1988

Comments on the reserve resource information

  • M1C1 = M9C4. DILUTION IS 20%. OVERALL RECOVERY IS 85% FOR GOLD AND 56% FOR SILVER DURING MILLING-SMELTING. MINE RECOVERY IS 100%.

Workings at the site

  • Type of workings Underground
    Length 2120M
    Overall depth 472M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OTHER OPEN STOPE METHODS
    Swell Factor .65
    Percent Waste Rock 0
    Percent Recovery 100
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 1
    Length of Inclines (m) 3962
    Slope of Inclines 7
    Number of Inclines 1
    Number of Adits 1
    1st Condition of Workings OPEN
    Capacity 1597
    Capacity Units MT ORE/DAY
    Unit Production Cost 13.78
    Units of Production $/MT ORE
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1989

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0261030124

Bibliographic references

  • Reserve-Resource

    BRODERICK, T.M. GEOLOGY OF THE ROPES GOLD MINE, MARQUETTE

  • Reserve-Resource

    COUNTY, MICHIGAN. ECON. GEOL., V. 40, 1945,

  • Reserve-Resource

    PP. 115-128.

  • Reserve-Resource

    CALLAHAN MINING CO., 1989, ANNUAL REPORT FOR 1988:

  • Reserve-Resource

    PHOENIX, ARIZONA.

  • Deposit

    CLARK, L.D., W.F. CANNON, AND J.S. KLASNER. BEDROCK

  • Deposit

    GEOLOGIC MAP OF THE NEGAUNEE SW QUADRANGLE, MARQUETTE

  • Deposit

    COUNTY, MICHIGAN. U.S. GEOLOGICAL SURVEY, GEOLOGIC

  • Deposit

    QUADRANGLE MAP GQ-1226, 1975, 1 P.

  • Deposit

    HEINEN, H.J., D.G. PETERSON, AND R.E. LINDSTROM. PROCESSING

  • Deposit

    GOLD ORES USING HEAP LEACH-CARBON ADSORPTION METHODS.

  • Deposit

    BUMINES IC 8770, 1978, 21 PP.

  • Deposit

    POTTER, G.M. GOLD AND SILVER LOW COST PROCESSING METHODS--

  • Deposit

    STATE OF THE ART. SKILLINGS' MINING REVIEW, V. 70,

  • Deposit

    NO. 10, MAR. 7, 1981, PP. 1-11.

  • Deposit

    SCHNEIDER, C.F. SURFACE GEOLOGY AND AGRICULTURAL CONDITIONS

  • Deposit

    OF MICHIGAN. MICHIGAN GEOL. AND BIOLOGICAL SURVEY,

  • Deposit

    PUB. 25, GEOL. SERIES 21, 1917, PP. 47-95.

  • Deposit

    SKILLINGS, D.N. CALLAHAN MINING CORP.'S PROGRAM AT ROPES

  • Deposit

    MINE IN MICHIGAN. SKILLINGS' MINING REVIEW, V. 69,

  • Deposit

    NO. 47, NOV. 22, 1980, PP. 1-13.

  • Deposit

    SKILLINGS' MINING REVIEW. CALLAHAN EXPLORATION AT ROPES

  • Deposit

    GOLD PROPERTY. V. 69, NO. 16, APR. 19, 1980, P. 21.

  • Deposit

    SKILLINGS' MINING REVIEW. CALLAHAN PROGRESS IN SECOND PHASE

  • Deposit

    OF ROPES MINE EVALUATION. V. 70, NO. 10, MAR. 7, 1981,

  • Deposit

    P. 6.

  • Deposit

    SKILLINGS' MINING REVIEW. CALLAHAN NEARING DECISION ON

  • Deposit

    MAJOR PROJECT FOR ROPES MINE. V. 70, NO. 39, SEP. 26,

  • Deposit

    1981, P. 16.

  • Deposit

    THE MINING RECORD, "ROPES GOLD MINE PRODUCTION ADDS TO

  • Deposit

    CALLAHAN'S EARNINGS", V 98, #30, JULY 29, 1987, P3.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-DEC-1996 Gosling U.S. Bureau of Mines