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  3. Mineral Resource Data System (MRDS)

Hemerdon

Prospect in United Kingdom with commodities Kaolin, Tin, Tungsten
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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. Reserves and resources
  11. Workings at the site
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10231313
MAS/MILS ID 4120100030
Record type Site
Current site name Hemerdon

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -4.16446, 50.41574 (WGS84)
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

United Kingdom(country)

Europe(continent)

Land(continent)

Geographic areas

Country
United Kingdom

Comments on the location information

  • LATITUDE AND LONGITUDE ARE GIVEN FOR PLYMOUTH, DEVON. THE HEMERDON ORE BODY IS LOCATED APPROXIMATELY SEVEN MILES TO THE EAST OF PLYMOUTH. FEASIBILITY STUDIES ARE SCHEDULED TO CONTINUE UNTIL 1981 OR 1982. THE OREBODY WAS WORKED BRIEFLY DURING WORLD WAR II. INFORMATION GAINED AT THAT TIME INDICATES A POTENTIALLY DIFFICULT PROSPECT.

Commodities

Commodity Importance
Kaolin Secondary
Tin Critical Primary
Tungsten Critical Primary

Nearby scientific data

Ore Body (1) -4.16446, 50.41574
ListMap

Economic information

Ore body information

  • Length 650M
    Width 135M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STOCKWORK
    Shape of Orebody #1 UNKNOWN
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control IGNEOUS
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Date of Last Modification 830909

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Both
Significant Yes
Mining method Open Pit
Year of first production 1943
Milling method Gravity

Ownership information

  • Type Owner
    Owner Canada Tungsten Corp.
    Interest 100
    Home office Canada
    Year 1992

Comments on the production information

  • PA=3.2MT WO3/DAY; 1.4MT SN/DAY. PB=9.7MT WO3/DAY; 4.2MT SN/DAY. PC=12.3MT WO3/DAY; 5.3MT SN/DAY.

Reserves and resources

  • Type In-situ
    Estimate year 1992
    Measured 38200000mt ore
    Demonstrated 38200000mt ore
    Total resources 38200000mt ore
    Commodity Subtype Grade units Group Importance Year
    Molybdenum Mo 0.029 wt-pct Molybdenum 1992
    Tungsten Wo3 0.183 wt-pct Tungsten Major 1992

Comments on the reserve resource information

  • PUBLIC RESERVES AND GRADE INFO FROM: THE ECONOMICS OF TUNGSTEN 1990, SIXTH EDITION BY ROSKILL INFORMATION SERVICES LTD.
  • 100% MINE RECOVERY. 6.2% ORE DILUTION.
  • RESOURCES AS OF 1/83. AMAX BEGAN OPERATION OF A PILOT PLANT AT THIS DEVON MINE. DEPOSIT HAS POTENTIAL TO SUPPLY 6 PCT. OF WORLD CONSUMPTION. LAT. & LONG. ARE FOR PLYMOUTH IN DEVON. OREBODY IS 7 MILES EAST.

Workings at the site

  • Type of workings Surface
    Area 38.2HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 61.4
    Primary Material Cover HARD ROCKS
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 5
    Capacity 1923
    Capacity Units MT ORE/DAY
    Unit Production Cost 4.86
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 2
    Year of Information 1982
  • Type of workings Surface
    Area 38.2HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 61.4
    Primary Material Cover HARD ROCKS
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 5
    Capacity 5769
    Capacity Units MT ORE/DAY
    Unit Production Cost 4.86
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 2
    Year of Information 1982
  • Type of workings Surface
    Area 38.2HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 3
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 61.4
    Primary Material Cover HARD ROCKS
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 5
    Capacity 7308
    Capacity Units MT ORE/DAY
    Unit Production Cost 4.86
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 2
    Year of Information 1982

Reference information

Bibliographic references

  • Reserve-Resource

    CANADA TUNGSTEN MINING CORP. ANNUAL REPORT 1989.

  • Deposit

    MINING JOURNAL, INDUSTRY IN ACTION, V. 292, NO. 7505,

  • Deposit

    JUNE 22, 1979, P. 485

  • Deposit

    MINING MAGAZINE, WORK CONTINUES AT HEMERDON, V. 138, NO. 5

  • Deposit

    MAY, 1978, P. 415.

  • Deposit

    MINING MAGAZINE, PANORAMA, NEW U.K. TUNGSTEN MINE ?, V. 138,

  • Deposit

    NO. 2, FEBRUARY, 1978, P. 93 & 95.

  • Deposit

    MINING JOURNAL, MINING WEEK, V. 291, NO. 7479, DECEMBER 22,

  • Deposit

    1978, P. 483 & 484.

  • Deposit

    MINING JOURNAL, MINING WEEK, V. 288, NO. 7383, FEBRUARY 18,

  • Deposit

    1977, P. 118.

  • Deposit

    MINING MAGAZINE, MINING ACTIVITY IN THE WESTERN WORLD,

  • Deposit

    V. 140, NO. 1, JANUARY 1979, P. 72.

  • Deposit

    MINING JOURNAL, INDUSTRY IN ACTION, V. 291, NO. 7469,

  • Deposit

    OCTOBER 13, 1978, P. 293.

  • Deposit

    INDUSTRY NEWSWATCH, AUGUST 1979, P. 1176.

  • Deposit

    ENGINEERING AND MINING JOURNAL, THIS MONTH IN MINING, V. 178

  • Deposit

    NO. 9, SEPTEMBER 1977, P. 342, & 48.

  • Deposit

    WORLD MINING YEARBOOK, CATALOG, SURVEY & DIRECTORY NUMBER

  • Deposit

    1979, WORLDWIDE MINING DEVELOPMENTS, V. 32, NO. 8, JULY 25

  • Deposit

    1979, P. 223.

  • Deposit

    1978, WORLDWIDE MINING DEVELOPMENTS, V. 31, NO. 7, JUNE 25

  • Deposit

    1978, P. 240.

  • Deposit

    HEMERDON-BRITAIN'S LARGEST TUNGSTEN DEPOSIT, MINING MAGAZINE

  • Deposit

    LONDON, OCTOBER 1979, P. 342-391.

  • Deposit

    BEVAN, M. UNPUBLISHED PAPER, HEMERDON MINING & SMELTING LTD.

  • Deposit

    APRIL, 1981, P. 6.

  • Deposit

    NEW MINE DEVELOPMENTS, ENGINEERING AND MINING JOURNAL,

  • Deposit

    JANUARY, 1982 P. 61.

  • Deposit

    PLANNING PERMISSION TO MINE TUNGSTEN AND TIN AT HEMERDON,

  • Deposit

    MINING CONGRESS JOURNAL, WASH. DC, DECEMBER 1981.

  • Deposit

    PROGRESS CONTINUES AT HEMERDON, MINING MAGAZINE, LONDON,

  • Deposit

    SEPTEMBER, 1980, P. 183.

  • Deposit

    MOORE, J.M., EXPLORATION PROSPECTS FOR STOCKWORK

  • Deposit

    TIN-TUNGSTEN ORES IN S.W. ENGLAND, MINING MAGAZINE,

  • Deposit

    FEBRUARY, 1977, P. 97-103

  • Deposit

    HEMERDON MINING AND SMELTING LTD., SPECULATIVE BUY,

  • Deposit

    L. MESSEL & CO., LONDON, JANUARY, 1981 P. 2.

  • Deposit

    AMAX SEEKS APPROVAL FOR TUNGSTEN-TIN MINE IN HEMERDON,

  • Deposit

    ENGLAND, NORTHERN MINER, OCTOBER, 1981, P. A24.

  • Deposit

    BILLITON TO BUY HEMERFON STAKE, MINING JOURNAL, LONDON,

  • Deposit

    DECEMBER, 1980, P. 52

  • Deposit

    REPORT ON THE HEMERDON PROJECT, AMAX EXPLORATION OF U.K.,

  • Deposit

    INC., OCTOBER, 1981, P. 11

  • Deposit

    HEMERDON SEEKS PLANNING PERMIT, METAL BULLETIN, LONDON,

  • Deposit

    OCTOBER, 1981, P. 19

  • Deposit

    TIN AND WOLFRAM AT HEMERDON, MINING JOURNAL, LONDON, APRIL,

  • Deposit

    1981, P. 279

  • Deposit

    HEMERDON TO SEEK DEVON PERMISSION FOR MINING, FINANCIAL

  • Deposit

    TIMES, LONDON, OCTOBER, 1981, P. 26

Reporter information

Type Date Name Affiliation Comment
Reporter 20-APR-95 Rfb 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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