1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Maardu Chemical Combine

Plant in Estonia with commodity Phosphorus-Phosphates
Map
XML
JSON
KML
B
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. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10207135
MAS/MILS ID 4470000001
Record type Site
Current site name Maardu Chemical Combine
Alternate or previous names Marrdu Mine, Toolse Mine, Kabala Mine, Rakvere Area, Baltic Region, Estonia Phosphate Combine, Sillamjae Plant

Geographic coordinates

Point of reference Town
Geographic coordinates: 28.16925, 59.3651 (WGS84)
Elevation 300
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Estonia(country)

Geographic areas

Country
Estonia

Commodities

Commodity Importance
Phosphorus-Phosphates Primary

Materials information

Materials Type of material
Dolomite Unknown
Glauconite Unknown

Nearby scientific data

Town (1) 28.16925, 59.3651
ListMap

Economic information

Ore body information

  • Thickness 5M
    Depth to top 20M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Primary mode of Origin SEDIMENTATION
    Date of Last Modification 910705

Comments on the geologic information

  • GENERAL GEOLOGY AT MAARDU INCLUDES AN ORE BED OF FINE-GRAIN QUARTZ SANDS. MOST OF THE PHOSPHATE IS CONCENTRATED IN SHELL (BRATHIOPOD) DETRITUS. THE COQUINA CONSISTS OF NUMEROUS NODULES AND CONCRETIONS OF PHOSPHATIZED SHELLS IN THE QUARTZ MATRIX. THE DEPOSITS COVER AN AREA OF OVER 1000 SQKM, WITH A PHOSPHORITE LAYER 3-10M THICK FOUND AT DEPTHS OF 10-200M

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Non-metallic
Significant No
Discovery year 1921
Mining method Open Pit
Year of first production 1939
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Estonia

Mineral rights holdings

Type of mineral rights State Lease

Land status

Ownership category State

Ownership information

  • Type Owner
    Owner Government Of Estonia
    Interest 100
    Home office Estonia
    Year 1991
    First year 1991
    Last year 1994

Comments on the production information

  • THE CONCENTRATED PHOSPHATE IS EITHER DISTRIBUTED DOMESTICALLY FOR DIRECT APPLICATION AS A FERTILIZER, OR SENT TO A PHOSPHORIC ACID PLANT FOR FERTILIZER PRODUCTION.

Reserves and resources

  • Type In-situ
    Estimate year 1985
    Inferred 6000000000mt ore
    Total resources 6000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 10 wt-pct Phosphorus Major 1985

Comments on the reserve resource information

  • RESERVES AT MAARDU ARE LIMITED, BUT THE LARGER DEPOSITS LOCATED TO THE EAST, IN THE RAKVERE AREA, ARE MUCH LARGER, COMPRISING 1/3 OF THE TOTAL RESERVES OF ESTONIA. MAARDU RESERVES HAVE BEEN EXHAUSTED. RESERVES AT THE OTHER DEPOSITS: AS OF MAY-JUNE 1993. TOOLSE 27.3 M MT AT 10.6 % P2O5 ASERI 22.5 M MT AT 8.7 % P2O5 RAKVERE 605 M MT AT ??? % P2O5 KABALA 188 M MT AT 12.6 % P2O5
  • M1C1=M9C4. INCLUDES RESERVES OF THE RAKVERE AREA.

Workings at the site

  • Type of workings Surface
    Area 100HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method STRIP-LEVEL
    Avg. Overburden Thickness 20
    Primary Material Cover M-HARD ROCKS
    Hardness of Ore M-HARD ROCKS
    Capacity 26667
    Capacity Units MT ORE/DAY
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1985

Reference information

Bibliographic references

  • Deposit

    OFFICIAL STANDARD NAMES, U.S.S.R., VOLUMES, III, K, PAGE 2;

  • Deposit

    IV, L-N, PAGE 205; V, O-R, PAGE 565; AND VI, S-T, PAGE

  • Deposit

    806, UNITED STATES BOARD ON GEOGRAPHIC NAMES.

  • Reserve-Resource

    KRASILNIKOVA,N.A. AND ILYIN, A.V., THE ORDOVICIAN BALTIC

  • Reserve-Resource

    PHOSPHORITE BASIN, USSR, PHOSPHATE DEPOSITS OF THE

  • Reserve-Resource

    WORLD, VOL 2, CAMBRIDGE UNIV. PRESS, 1989, PP. 494-496.

  • Reserve-Resource

    BRITISH SULPHUR CORPORATION, WORLD SURVEY OF PHOSPHATE

  • Reserve-Resource

    DEPOSITS, FIFTH ED. , 1987, PP. 235-236

  • Reserve-Resource

    PHOSPHORUS AND POTASSIUM N0. 185, PAGE 31, MAY-JUNE 1993.

General comments

Subject category Comment text
Deposit THE MILS LAT/LONG ARE FOR THE TOWN OF RAKVERE WHICH IS 10 TO 20 KM EAST OF THESE MINING OPERATIONS, AND THE LARGEST TOWN IN THE AREA. APPROXIMATE LAT/LONG FOR EACH OF THE OPENATIONS, BASED ON "MI" REFERENCE 001-003 ARE LISTED BELOW: MAARDU N592500 E0251500 CLOSED, MAY-JUNE 1993. RESERVES EXHAUSTED. TOOLSE N593130 E0262800 KABALA N592100 E0264000 WITH THE CLOSER OF MAARDU, NO PHOSPHORITE IS BEING MINED. THE DEPOSIT LISTING WELL BE CONISDERED A PAST PRODUCER. NONE OF THE OTHER DEPOSITS ARE BEING DEVELOPED AS OF 1993.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-APR-95 Buckingham, David A. U.S. Bureau of Mines

Beyond USGS

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

Maps centered on this site