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  3. Mineral Resource Data System (MRDS)

Skoumsta Type A Ore

Producer in Greece with commodity Chromium
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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. Ownership information
  12. Production statistics
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10206819
MAS/MILS ID 4840100003
Record type Site
Current site name Skoumsta Type A Ore
Alternate or previous names Gemee, Xerolivado Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 21.53508, 40.1655 (WGS84)
Elevation 1000
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Greece(country)

Europe(continent)

Land(continent)

Geographic areas

Country
Greece

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Unknown
Olivine Unknown
Pyroxene Unknown

Nearby scientific data

Ore Body (1) 21.53508, 40.1655
ListMap

Economic information

Ore body information

  • Strike N45E
    Dip 80W
    Thickness 10M
    Length 300M
    Width 7M
    Depth to top 110M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 OTHER
    Shape of Orebody #1 PIPELIKE
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control FAULTING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N45E:80W
    Minimum Depth to Top 65
    Avg. Thick. Unconsol. Mat. .5
    Min. Thick. Unconsol. Mat. .5
    Date of Last Modification 830713
  • Area 1000HA
    Field Value
    Total Surface Area (HA) 1000
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1890
Mining method Shrinkage Methods
Year of first production 1952
Milling method Gravity

Mining district

District name Xerolivado

Ownership information

  • Type Owner-Operator
    Owner Gemee
    Interest 100
    Home office Greece
    Year 1981
    First year 1981

Production statistics

  • Year 1980
    Description Ore Input 12.24%; Output Is 35.03% Cr 50000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Chromium Chromium 50000mt 12wt-pct
  • Year 1982
    Description 140000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Chromium Chromium 140000mt

Comments on the reserve resource information

  • THIS IS THE ORIGINAL UG MINING OPERATION ANALYZED IN OLD STUDY (IE. XEROLIVADO). IN UPDATE IT HAS BEEN DIFFERENTIATED FROM THE "SKOUMSTA (TYPE B)" ORE (SEQ.NO. 4840100007) WHICH IS LOWER GRADE ORE FROM 3 SEPARATE DEPOSITS (ANEXITIKA, KOUROUMIA , AND KERASITSA) LOCATED TO THE NORTH OF THE NEW MILL AT SKOUMSTA. FOR ANALYSIS: 216,000 MTPY ROM FOR : 67,230 MTPY CONCS.AT 48% CR2O3. ALL CONCS.TO TSINGELI SMELTER.
  • 1/89 INSITU DEMO.TONNAGE = UG MINEABLE TONNAGE TO 950 M LEVEL IN CENTRAL SECTOR (7 OREBODIES) AND FOR 60 M VERT.IN SW SECTOR.
  • Q-MATRIX 1 RESOURCE TONNAGE REPRESENTS A BEST GUESS FROM VAR REPORTED TONNAGES IN THE CENTRAL AND SOUTHWEST SECTORS. SHOULD , MOST LIKELY, BE TREATED AS AN ABSOLUTE MINIMUM RESOURCE, SINCE THE WOUTHWEST SECTOR WAS RELATIVELY UNKNOWN AT THE TIME, AND NO EVIDENCE OF PINCHING OUT IN THIS DIRECTION HAS BEEN INDICATED. THIS EVALUATION ONLY DEALS WITH THE XEROVADO DEPOSIT WHICH WILL BE MINED AT A RATE OF ABOUT 140,000 MT. OF ORE PER YEAR BY THE TIME THE NEW MILL IS BUILT (K2). INDICATION S ARE THE DESIGN CAPACITY OF THE NEW MILL WILL BE 720 MT. OF FEED PER DAY, ORE ABOUT 216,000 MT. OF ORE FEED PER YEAR. THIS XEROLIVADO WILL ONLY BE PROVIDING ABOUT 65% OF THE FEED TO THE MILL. IT IS EXPECTED THAT THE REMAINDER OF THE FEED WILL BE FROM DEPOSITS SUCH AS ANEXITIKA, AND RIZO, WHICH ARE RECENT DISCOVERIES IN THE SAME AREA, BUT EVEN OF A LOWER GRADE (12-15% CR2O3) THESE OTHER DEPOSITS HAVE NOT CONTRIBUTED TO THES AVAILABILI TY STUDY, DUE TO LACK OF DATA.

Workings at the site

  • Type of workings Underground
    Overall depth 400M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method SHRINKAGE W/TIMBERED METHODS
    Percent Recovery 95
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics NO PLANES OF WEAKNESS
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 150
    Number of Inclines 2
    Avg. Length of Adits (m) 2200
    Number of Adits 1
    1st Condition of Workings OPEN
    Capacity 166
    Capacity Units MT ORE/DAY
    Unit Production Cost 17.22
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 2
    Year of Information 1982
  • Type of workings Underground
    Overall depth 400M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method SHRINKAGE W/TIMBERED METHODS
    Percent Recovery 95
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics NO PLANES OF WEAKNESS
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 150
    Number of Inclines 2
    Number of Adits 1
    1st Condition of Workings OPEN
    Capacity 467
    Capacity Units MT ORE/DAY
    Unit Production Cost 16.12
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 2
    Year of Information 1982

Reference information

Bibliographic references

  • Deposit

    PRIVATE REPORT, ATHENS, OCT. 1981.

  • Deposit

    ZACHOS, K. THE CHROMITE MINERALIZATION OF THE VOURINO'S OPHI

  • Deposit

    COMPLEX, NORTHERN GREECE. MAGMATIC ORE DEPOSITS, A SYMP

  • Deposit

    ECCN. GEOL. MONOGRAPH NO.4, 1969. PP.147-153.

  • Deposit

    JACKSON, E.D., ET AL. THE VUONOS OPHIOLITE ,GREECE:CYCLIC UN

  • Deposit

    LINEATED CUMULATES OVERLYING HARZBURGITE TECTONITE. GOE

  • Deposit

    OF AMERICA BULLETIN.,V. 86, PP.390-398.

  • Deposit

    MINING MAGAZINE ,DEVELOPMENTS IN GREECE. DEC.1980. PP.528-53

  • Deposit

    MOORES, E., PETROLOGY AND STRUCTURE OF THE VOURINOS OPHIO-

  • Deposit

    LITE COMPLEX, NORTHERN GREECE, GEOL. SOC. OF AMERICA

  • Deposit

    SPECIAL PAPER, 1969, 74 P.

  • Deposit

    HESS, H.H., ET AL, PETROLOGY, STRUCTURE AND ORIGIN OF HIGH-

  • Deposit

    LY DIFFERENTIATED ALPINE OPHIOLITES.

General comments

Subject category Comment text
Deposit MEASUREMENTS REPORTED ARE BASED ON THE AVERAGE OF 7 SEPARATE ORE BODIES, DIVIDED INTO 3 SECTIONS BY 2 MAJOR FAULT ZONES.

Reporter information

Type Date Name Affiliation Comment
Reporter 18-SEP-1995 Eastern Field Operations Center (EFOC) 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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