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  3. Mineral Resource Data System (MRDS)

St. Lawrence Fluorspar

Plant in Newfoundland, Canada with commodity Fluorine-Fluorite
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Nearby scientific data
  7. Ore body information
  8. Economic information about the deposit and operations
  9. Ownership information
  10. Production statistics
  11. Reserves and resources
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10206120
MAS/MILS ID 1220250008
Record type Site
Current site name St. Lawrence Fluorspar
Alternate or previous names St Lawrence, Alcan

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -55.39059, 46.91654 (WGS84)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Canada Newfoundland

Commodities

Commodity Importance
Fluorine-Fluorite Critical Primary

Nearby scientific data

Ore Body (1) -55.39059, 46.91654
ListMap

Economic information

Ore body information

  • Length 2500M
    Width 1.5M
    Field Value
    MAS Matrix # 4
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 LENTICULAR
    Primary mode of Origin UNKNOWN
    Date of Last Modification 850827
  • Strike N45W
    Dip 90E
    Thickness 2.5M
    Length 816M
    Width 350M
    Field Value
    MAS Matrix # 9
    MAS Column # 5
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 LENTICULAR
    Strike And Dip N45W:90E
    Date of Last Modification 920420

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Non-metallic
Significant No
Discovery year 1843
Mining method Open Stope
Year of first production 1928
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Ownership information

  • Type Owner
    Owner Receivership Of Ernst And Young
    Interest 100
    Year 1991

Production statistics

  • Year 1933
    Description Total For St. Lawrence From 1933-1941. 76055 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Fluorine-Fluorite Fluorine 76055mt
  • Year 1942
    Description Total For St. Lawrence From 1942-1968. 264930 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Fluorine-Fluorite Fluorine 264930mt
  • Year 1969
    Description Total For St. Lawrence From 1969-1977. 1515120 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Fluorine-Fluorite Fluorine 1515120mt
  • Year 1990
    Description Slf Production - 1990 180000 Ore In Tonnes
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Fluorine-Fluorite Fluorine 180000mt

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Measured 270000mt ore
    Indicated 1570000mt ore
    Demonstrated 1840000mt ore
    Inferred 1860000mt ore
    Total resources 3700000mt ore
    Commodity Subtype Grade units Group Importance Year
    Fluorine-Fluorite CaF2 35 wt-pct Fluorine Major 1983
  • Type In-situ
    Estimate year 1983
    Measured 1450000mt ore
    Indicated 280000mt ore
    Demonstrated 1730000mt ore
    Inferred 310000mt ore
    Total resources 2040000mt ore
    Commodity Subtype Grade units Group Importance Year
    Fluorine-Fluorite CaF2 35 wt-pct Fluorine Major 1983
  • Type In-situ
    Estimate year 1983
    Measured 340000mt ore
    Indicated 400000mt ore
    Demonstrated 740000mt ore
    Inferred 1610000mt ore
    Total resources 2350000mt ore
    Commodity Subtype Grade units Group Importance Year
    Fluorine-Fluorite CaF2 35 wt-pct Fluorine Major 1983
  • Type In-situ
    Estimate year 1983
    Measured 2060000mt ore
    Indicated 2250000mt ore
    Demonstrated 4310000mt ore
    Inferred 3780000mt ore
    Total resources 8090000mt ore
    Commodity Subtype Grade units Group Importance Year
    Fluorine-Fluorite CaF2 35 wt-pct Fluorine Major 1983

Comments on the reserve resource information

  • PAST PRODUCER - REOPENED 1987 - CLOSED 1990. OWNER/OPERATOR MINWORTH LTD, BOUGHT OUT PROVINCE OF NEWFOUNDLAND LATE 1988.
  • 35% IS THE CUT-OFF GRADE. WAS THE ONLY FIGURE GIVEN

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN STOPE
    Capacity 600
    Capacity Units MT ORE/DAY
    Year of Information 1991

Reference information

Bibliographic references

  • Ownership

    *INDUSTRIAL MINERALS, JAN. 1994, P. 64.

  • Reserve-Resource

    DEPT. OF MINES & ENERGY-NEWFOUNDLAND, "FLUORSPAR DEPOSITS

  • Reserve-Resource

    OF THE ST. LAWRENCE AREA, NEWFOUNDLAND: GEOLOGY & ECONOMIC

  • Reserve-Resource

    PPPOTENIAL",1983

  • Deposit

    E & MJ JAN. 1985,,, P.42

  • Deposit

    NORTHERN MINER, "NEWFOUNDLAND ACTIVITY IS IMPROVING "

  • Deposit

    MARCH 1, 1984

  • Deposit

    CONFIDENTIAL REPORT (COMMENT: B,001-005)

Comments on the references

  • FULTON, ROBERT B. MINE/MILL/DEPOSIT REPORT. "ST. LAWRENCE" SEPT. 1991.

General comments

Subject category Comment text
Deposit ST. LAWRENCE FLUORSPAR IS PLANNING TO START CONST. OF AN 80M ST/YR CAPACITY PROJECT IN 1986.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-JAN-1997 Cornellisson, Joseph L. 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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