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Iroquois No. 2

Past Producer in Keweenaw county in Michigan, United States with commodity Copper
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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. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10243075
MAS/MILS ID 0260830006
Record type Site
Current site name Iroquois No. 2

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -88.35224, 47.32 (WGS84)
Elevation 300
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Keweenaw(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mohawk(quadrangle 1:24,000 scale)

Hancock(quadrangle 1:100,000 scale)

Hancock C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Keweenaw Peninsula(hydrologic unit)

Southcentral Lake Superior(hydrologic accounting unit)

Southern Lake Superior(hydrologic subregion)

Great Lakes(hydrologic region)

Geographic areas

Country State County
United States Michigan Keweenaw

Public Land Survey System information

Meridian Township Range Section Fraction State
Michigan 057 N 032 W 22 NW Michigan

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Calcite Unknown
Chlorite Unknown
Copper Unknown
Epidote Unknown
Hematite Unknown
Plagioclase Unknown
Prehnite Unknown
Pyroxene Unknown
Quartz Unknown
Silver Unknown

Nearby scientific data

Ore Body (1) Portage Lake Volcanics
ListMap

Economic information

Ore body information

  • Strike N43E
    Dip 34N
    Thickness 7.6M
    Length 10670M
    Width 4270M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 BRECCIA FILL
    Shape of Orebody #2 LENTICULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 BLEACHING
    Type of Wallrock Alter. #2 PROPYLITIC
    Strike And Dip N43E:34N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 790413
  • Area 20HA
    Field Value
    Total Surface Area (HA) 20
    Date of Last Modification 910418

Comments on the geologic information

  • AMOUNTS BASED ON WILBAND,1970.
  • IROQUOIS AMYGDALOID IS A UNIT OF THE PORTAGE LAKE VOLCANICS. THE ROCK TYPE IS A PORPHORITIC AMYGDALOIDAL BASALT.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1942
Year of first production 1956

Mining district

District name Michigan Native Copper Belt

Mineral rights holdings

Type of mineral rights Fee Ownership
Type of mineral rights Private Lease

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Universal Oil Products
    Interest 100
    Home office Illinois
    Year 1978

Comments on the ownership information

  • UOP = UNIVERSAL OIL PRODUCTS COMPANY PROPERTY LEASED TO HOMESTAKE COPPER CO. AND INCO ON A 60/40% PARTNERSHIP BASIS.

Comments on the production information

  • HISTORICAL INFO. RELATES TO IROQUOIS AMYGDALOID. LODE WAS DISCOVERED IN 1942 BY DIAMOND CORE DRILLING HXYON DATES APPROXIMATE,DATES GIVEN YEAR OF PUB.OF INFO.

Comments on the reserve resource information

  • RESERVES IDENTICAL TO ORIGINAL BAER RESERVES,WHICH WERE DERIVED FROM AASE. GRADE IDENTICAL TO BAER GRADE

Workings at the site

  • Type of workings Underground
    Length 3048M
    Overall depth 1524M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method HORIZ CUT & FILL W/TAILINGS 10-60
    Swell Factor .55
    Percent Waste Rock 25
    Percent Recovery 100
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING
    Mine Support Chars. TIMBER
    Number of Shafts 2
    Capacity 6000
    Capacity Units MT ORE/DAY
    Unit Production Cost 20.86
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1978

Comments on the workings information

  • ENVIRONMENTAL SENSITIVITY OF LAND AND WATER TO MINERAL EXTRACTION IS RATED MODERATE IN BOTH LONG AND SHORT TERM BECAUSE OF SIZE OF TAILINGS DISPOSAL AREA AND BECAUSE OF THE HIGH SALINITY OF MINE WATERS.

Comments on other economic factors

  • CONCENTRATE HAULED BY RAIL ON EXISTING TRACKS TO WHITE PINE SMELTER

Reference information

Bibliographic references

  • Deposit

    AASE, JAMES H, MICHIGAN NATIVE-COPPER AVAILABILITY STUDY, RE

  • Deposit

    & RESOURCE PORTION OF UNPUBLISHED BUMINES STUDY, 1970,

  • Deposit

    (SOURCE OF RESERVE & RESOURCE DATA, HAS DIAGRAMS OF ORE

  • Deposit

    BECHTEL CORP, PRELIMINARY ENGINEERING & FEASIBILITY STUDY FO

  • Deposit

    HILLS CREEK PROJECT, FOR CALUMET & HECLA, INC., 1966.

  • Deposit

    (CONFIDENTIAL SOURCE OF SOME MILL & MINE COSTING DATA U

  • Deposit

    6000 TPD MILL & MINE MODELS IN BUMINES IC 8598)

  • Deposit

    BENNETT,H J, ET AL, AN ECONOMIC APPRAISAL OF THE SUPPLY OF C

  • Deposit

    FROM PRIMARY DOMESTIC SOURCES, BUMINES IC 8598, PP 15-1

  • Deposit

    96-97. (SOURCE OF MODEL MINE & MILL COSTS & DESIGN, W

  • Deposit

    WERE SCALED UP TO THE SIZE OF THIS PROPERTY)

  • Deposit

    JOHNSON, GUY A, MICHIGAN NATIVE COPPER AVAILABILITY STUDY, C

  • Deposit

    PORTION OF UNPUBLISHED BUMINES STUDY, 1970, 30 P. (SO

  • Deposit

    OF MINE DESIGN & SOME MINE COSTING INFORMATION USED IN

  • Deposit

    IC 8598, HAS MINE DESIGN ILLUSTRATIONS NOT IN IC)

  • Deposit

    WHITE, W S, THE NATIVE COPPER DEPOSITS OF NORTHERN MICHIGAN,

  • Deposit

    DEPOSITS OF THE U.S., 1933-1967, AIME, 1968, PP303-326.

  • Deposit

    (GENERAL DESCRIPTION OF DISTRICT, PLUS DETAILED BIBLIOG

  • Deposit

    MATHEWS, A. A., INC. CAPITAL AND OPERATING COST ESTIMATING S

  • Deposit

    FOR MINING AND BENEFICIATION OF METALLIC AND NONMETALLIC MIN

  • Deposit

    EXCEPT FOSSIL FUELS IN THE UNITED STATES AND CANADA. U.S.B.M

  • Deposit

    CONTRACT NO. JO255026. JULY 1975 299 PP.

  • Deposit

    REFERENCES 025-059 WERE ADDED 6/78 BASED ON UPDATE OF DATA

  • Deposit

    BY D.R. WILBURN,E.F.O.C.

  • Deposit

    BAER,R.,ET AL. MAS COPPER STUDY BACKUP FILES IROQUOIS NO.2

  • Deposit

    BUMINES,I.F.O.C. DENVER,COLORADO,1976:

  • Deposit

    BRODERICK, T.M. AND C.D. HOHL. THE MICHIGAN COPPER DIST-

  • Deposit

    RICT. CHAPTER IN COPPER RESOURCES OF THE WORLD, INTER-

  • Deposit

    NAT. GEOL. CONG., WASHINGTON, D.C., 1935, PP. 271-284.

  • Deposit

    BROOKS, T.S., R. PUMPELLY, AND C. ROMINGER. UPPER PENIN-

  • Deposit

    SULA, 1869-1873. GEOLOGICAL SURVEY OF MICHIGAN, V.1, 1873,

  • Deposit

    567 PP.

  • Deposit

    BUTLER, B.S. AND W.S. BURBANK. THE COPPER DEPOSITS OF MICH-

  • Deposit

    IGAN. U.S. GEOLOGICAL SURVEY PROF. PAPER NO. 144, 1929, 238

  • Deposit

    PP. PLUS SEPARATE PLATES.

  • Deposit

    CORNWALL,H.R.,ET AL. DETAILED GEOL. MAPS OF RECENTLY ACTIVE

  • Deposit

    COPPER MINES, HOUGHTON & KEWEENAW COUNTIES, MICH.,USGS

  • Deposit

    OPEN FILE RPT.,1947, 43PP.

  • Deposit

    HUBBARD, H.A. LOWER KEWEENAWAN VOLCANIC ROCKS OF MICHIGAN

  • Deposit

    AND WISCONSIN. U.S. GEOLOGICAL SURVEY J. RES., V. 3, NO. 5,

  • Deposit

    SEPT.-OCT.,1975, PP. 529-541.

  • Deposit

    MATHEWS, A.A. CAPITAL AND OPERATING COST ESTIMATING SYSTEM

  • Deposit

    HANDBOOK. BUMINES MINERALS AVAILABILITY SYSTEM CON-

  • Deposit

    TRACT NO. J0255026, FINAL ED., 1977, 344 PP.

  • Deposit

    WEEGE, R.J., AND J.P. POLLOCK. EXPLORATION METHODS IN THE

  • Deposit

    COPPER COUNTRY, KEWEENAW PENINSULA, MICHIGAN. CHAPTER

  • Deposit

    IN PAPERS PRESENTED AT THE AIME PACIFIC SOUTHWEST MIN-

  • Deposit

    ERAL INDUSTRY CONFERENCE, SPARKS, NEVADA, MAY 5-7,1965,

  • Deposit

    SESSION ON NORTH AMERICAN EXPLORATION AND MINE DEVELOP-

  • Deposit

    MENT; NEVADA BUREAU OF MINES REPT. 13, PT. C, 1966, PP.

  • Deposit

    51-61.

  • Deposit

    WEEGE, R.J., ET AL. THE GEOLOGY OF TWO NEW MINES IN THE NA-

  • Deposit

    TIVE COPPER DISTRICT OF MICHIGAN. ECON. GEOL., V. 67,

  • Deposit

    1972, PP. 622-633.

  • Deposit

    WILBAND, J.T. THE COPPER RESOURCES OF NORTHERN MICHIGAN.

  • Deposit

    BUMINES MINERALS AVAILABILITY SYSTEM CONTRACT NO. J0366

  • Deposit

    067, UNPUBL. FINAL REPT., 1978, 66 PP.; COPY AT E.F.O.C

  • Deposit

    WILBAND,J.T. PETROGRAPHIC STUDY OF KEWEENAW BASALTS.UNPUB.

  • Deposit

    1970.

General comments

Subject category Comment text
Deposit COPPER TONNAGES & GRADES FROM AASES REPORT, SEE REFERENCES. ALL OTHER % P VALUES GENERATED FROM 50% P TONNAGE ( CUMULATIVE OF ALL MEASURED, INDICATED & INFERRED RES DOWN TO THE 7800 FT LEVEL FOR THAT ORE GRADE SHOWN). HARD-COPY BACKUP-FILE FOR DETAILS. 6/78 MODIFICATIONS MADE TO SYSTEM BY D.R. WILBURN,E.F.O.C. GENERAL COMMENT RECORDS 001-005 APPLICABLE TO THIS UPDATE. RECORDS 069-074,D1-4,E1-5,U1-4,H001-H003,I001-I003 K001,L001,L002,M001,O001-O003,Q001-Q003,T001-T002 VALID PROPOSED MINING METHOD- CUT & FILL WITH 100% RECOVERY MILL DESIGN BASED ON CENTENNIAL PILOT MILL (1975-1976) USING MINE LIFE FOR FINANCIAL PURPOSES IS 30 YEARS, HOWEVER RESERVE TO 7800FT AT 6000MT/DAY. MILL ON-SITE, WITH 6000 TPD CAP. AND 90% RECOVERY RATE. DETAILS AND BREAKDOWN OF COSTS IN BACKUP FILES,E.F.O.C.

Reporter information

Type Date Name Affiliation Comment
Reporter 21-MAR-1995 Wilburn, David R. U.S. Bureau of Mines

Beyond USGS

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

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