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Northern Aroostook Manganese Dist.

Prospect in Aroostook county in Maine, United States with commodities Aluminum, Calcium, Iron, Magnesite, Manganese, Phosphorus-Phosphates, Silica, Sulfur
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10194627
MRDS ID W016566
MAS/MILS ID 0230030045
Record type District
Current site name Northern Aroostook Manganese Dist.
Alternate or previous names Presque Isle Area

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -68.16822, 46.73744 (WGS84)
Elevation 175

Site location context

Political divisions (FIPS codes)

Aroostook(county)

Maine(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mapleton(quadrangle 1:24,000 scale)

Presque Isle(quadrangle 1:100,000 scale)

Presque Isle(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Aroostook River(hydrologic unit)

St. John(hydrologic accounting unit)

St. John(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Maine Aroostook

Commodities

Commodity Importance
Aluminum Critical Tertiary
Calcium Tertiary
Iron Tertiary
Magnesite Tertiary
Manganese Critical Primary
Phosphorus-Phosphates Tertiary
Silica Tertiary
Sulfur Tertiary

Materials information

Materials Type of material
Apatite Unknown
Bementite Unknown
Braunite Unknown
Calcite Unknown
Chlorite Unknown
Feldspar Unknown
Hematite Unknown
Muscovite Unknown
Quartz Unknown
Rhodochrosite Unknown

Nearby scientific data

Ore Body (1) -68.16822, 46.73744
ListMap

Economic information

Ore body information

  • Length 32000M
    Width 4800M
    Depth to top 1M
    Field Value
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 IRREGULAR
    Shape of Orebody #2 TABULAR
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin OXIDATION
    Primary Ore Control BEDDING
    Secondary Ore Control OTHER
    Degree of Wallrock Alter. NONE
    Minimum Depth to Top 1
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 820224

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Both
Significant No
Discovery year 1838
Mining method Open Pit
Milling method Hydrometallurgy Unspecified

Mining district

District name Northern Aroos.

Mineral rights holdings

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

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Consortium Of Private Owners
    Home office Maine
    Year 1976

Reserves and resources

  • Type In-situ
    Estimate year 1976
    Inferred 81280000mt ore
    Total resources 81280000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 9 wt-pct Manganese Major 1976
  • Type In-situ
    Estimate year 1943
    Measured 964600mt ore
    Indicated 1276000mt ore
    Demonstrated 2240600mt ore
    Inferred 1589600mt ore
    Total resources 3830200mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 8.235 wt-pct Manganese Major 1943
  • Type In-situ
    Estimate year 1981
    Measured 552000mt ore
    Demonstrated 552000mt ore
    Total resources 552000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 10.3 wt-pct Manganese Major 1981
    Iron Fe 20.6 wt-pct Iron Trace 1981
  • Type In-situ
    Estimate year 1981
    Indicated 252000mt ore
    Demonstrated 252000mt ore
    Total resources 252000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 7.1 wt-pct Manganese Major 1981
    Iron Fe 14.1999 wt-pct Iron Trace 1981
  • Type In-situ
    Estimate year 1981
    Inferred 314000mt ore
    Total resources 314000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 7.5 wt-pct Manganese Major 1981
    Iron Fe 15 wt-pct Iron Trace 1981
  • Type In-situ
    Estimate year 1981
    Measured 986000mt ore
    Demonstrated 986000mt ore
    Total resources 986000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 10.1999 wt-pct Manganese Major 1981
    Iron Fe 20.4 wt-pct Iron Trace 1981
  • Type In-situ
    Estimate year 1981
    Indicated 376000mt ore
    Demonstrated 376000mt ore
    Total resources 376000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 3.7 wt-pct Manganese Major 1981
    Iron Fe 7.4 wt-pct Iron Trace 1981
  • Type In-situ
    Estimate year 1981
    Inferred 401000mt ore
    Total resources 401000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 9.6999 wt-pct Manganese Major 1981
    Iron Fe 19.4 wt-pct Iron Trace 1981

Comments on the reserve resource information

  • GRADE ONLY APPLIES TO THE RESOURCES AT THE 50% LEVEL. RESOURCES BASED ON ARTICLE PUBLISHED BY MILLER. ADJUSTMENTS WERE MADE IN RESPONSE TO INFORMATION GATHERED FROM EILERTSEN AND THE NATIONAL MATERIAL ADVISORY BOARD.
  • RECORDS 3, 4, & 5 ARE BASED ON DEPOSITS >50 FEET BUT <100 FE AND ARE CALCULATED TO A DEPTH OF 100 FEET. RECORDS 6, 7, & 8 ARE BASED ON DEPOSITS >100 FEET WIDE AND A CALCULATED TO A DEPTH OF 200 FEET. ALTHOUGH OTHER MANGANESE DEPOSITS MAY EXTEND DEEPER, CALCULATIONS WERE NOT MADE ASSUMING THE EXPENSE OF MINING THIS DEEP ORE BY SURFACE METHODS WOULD BE TOO COSTLY. LISTED AS PER WILBAND 1970,IN THESE DISTRICTS TO BE NEARLY TWICE THAT OF MANGANESE.

Workings at the site

  • Type of workings Surface
    Area 470HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Swell Factor .6
    Percent Waste Rock 75
    Avg. Overburden Thickness 1
    Primary Material Cover SAND, GRAVEL
    Percentage 100
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 11
    Max. Pit Slope (degrees) 45
    Capacity 20000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 117
    Unit Production Cost 3.62
    Units of Production $/MT ORE
    Operating Days per Year 213
    Operating Shifts per Day 3
    Year of Information 1979
  • Type of workings Surface
    Area 470HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Swell Factor .6
    Percent Waste Rock 75
    Avg. Overburden Thickness 1
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 11
    Max. Pit Slope (degrees) 45
    Capacity 15000
    Capacity Units MT ORE/DAY
    Unit Production Cost 3.62
    Units of Production $/MT ORE
    Operating Days per Year 213
    Operating Shifts per Day 3
    Year of Information 1979

Reference information

Bibliographic references

  • Deposit

    SCHMIDT, A. AND R. POTTS, FIELD TRIP REPORT, NOV 8-12, AROO

  • Deposit

    MILLER,R.J.,1947 MANGANESE DEPOSITS OF AROOSTOOK COUNTY,ME.

  • Deposit

    GEOL. SUR. BULL. 4.

  • Deposit

    WHITE,WALTER S. USGS BULL 940-E,1943-OCCURANCE OF MANGANESE

  • Deposit

    ERN AROOSTOOK COUNTY.

  • Deposit

    PAVLIDES,LOUIS GEOLOGY AND MANGANESE DEPOSITS OF THE MAPLE A

  • Deposit

    EY MOUNTAINS AREA,AROOSTOOK COUNTY MAINE-USGS PP 362,1962

  • Deposit

    REPORT OF THE PANEL ON MANGANESE RECOVERY TECHNOLOGY.NATIONA

  • Deposit

    MINERALS ADVISORY BOARD,NMAB 323,1976 81 PP

  • Deposit

    EILERTSEN,N.A. ESTIMATED COSTS OF SURFACE MINING AND UNDERGR

  • Deposit

    MINING IN THE LOW GRADE MANGANIFEROUS DEPOSITS OF AROOSTOOK

  • Deposit

    MAINE.BUMINES UNPUBLISHED CONFIDENTIAL FILE 420.04,1957,26 P

Reporter information

Type Date Name Affiliation Comment
Reporter 11-MAR-1993 C.P.-D.H. 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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