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Marmora

Prospect in Ontario, Canada with commodity Wollastonite
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Ownership information
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10023319
MRDS ID I000174
Record type Site
Current site name Marmora
Alternate or previous names Maramora, Black Hawk, Deloro

Geographic coordinates

Geographic coordinates: -77.61411, 44.49499 (WGS84)
Relative position ABOUT 5 KM EAST OF TOWN OF MARAMORA, ABOUT MIDWAY BETWEEN TORONTO AND ONTARIO.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Kingston(quadrangle 1:250,000 scale)

Geographic areas

Country State
Canada Ontario

Commodities

Commodity Importance
Wollastonite Primary

Materials information

Materials Type of material
Wollastonite Ore
Calcite Gangue

Alteration

  • (Local) Contact Metamorphism, Silicification

Mineral occurrence model information

Model code 65
USGS model code 18g
Deposit model name Skarn wollastonite

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite

Nearby scientific data

(1) -77.61411, 44.49499
ListMap

Economic information

Ore body information

  • Length 1200M
    Width 100M

Economic information about the deposit and operations

Development status Prospect
Commodity type Non-metallic
Significant No
Discoverer "Local Prospector"

Ownership information

  • Type Owner
    Owner Cominco Ltd. (51%); Black Hawk Mining Inc. (Platinova Resources Ltd., 49%)

Reserves and resources

  • Type In-situ
    Estimate year 1987
    Total resources 2000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Wollastonite Wol 40 wt-pct Wollastonite Major 1987
  • Type In-situ
    Estimate year 1988
    Total resources 204000mt ore
    Commodity Subtype Grade units Group Importance Year
    Wollastonite Wol 47 wt-pct Wollastonite Major 1988

Comments on the reserve resource information

  • THE 1987 ESTIMATE IS A GEOLOGIC ESTIMATE. THE 2ND NUMBER IS INDICATED OPEN-PIT RESVS FROM ONE WOLLASTONITE ZONE. THE 3RD NUMBER IS INFERRED ORE FROM A SECOND WOLLASTONITE ZONE.

Comments on development

  • MAPPING, TRENCHING, FLOTATION TESTS, 14 DIAMOND DRILL HOLES (1987); 10,000 FT DRILLING PROGRAM. ; ECON.COM: TESTS INDICATE GOOD SEPARATION OF WOLLASTONITE CONCENTRATE WITH SIMPLE FLOTATION CIRCUIT. INITIAL TARGET MARKET - THE MANUFACTURERS. DEPOSIT IS ON MAIN HIGHWAY.

Reference information

Bibliographic references

  • Deposit

    NORTHERN MINER, 1987, COMINCO TO INVESTIGATE WOLLASTONITE PROPERTY: V. 73, NO. 10, P. 24.

  • Deposit

    NORTHERN MINER, 1987, NEW FIND AT PLATINOVA'S MARMORA WOLLASTONITE BET: V. 73, NO. 33, P. 21.

  • Deposit

    MINING JOURNAL, 1987, WOLLASTONITE PROJECT FOR COMINCO: V. 308, NO. 7920, P. 429.

  • Deposit

    INDUSTRIAL MINERALS, 1987, WORLD OF MINERALS: NO. 233, P. 8.

  • Deposit

    CANADA DEPARTMENT OF ENERGY, MINES, AND RESOURCES, 1989, CANADIAN MINERAL DEPOSITS NOT BEING MINED IN 1989: CANADA DEPARTMENT OF ENERGY, MINES, AND RESOURCES MINERAL BULLETIN MR223, UNPAGINATED.

  • Deposit

    INDUSTRIAL MINERALS, 1988, WORLD OF MINERALS: NO. 253, P. 12.

  • Deposit

    NORTHERN MINER, 1988, PLATINOVA SEES CASH FLOW FROM WOLLASTONITE IN '89: MAY 16, 1988, P. 8.

  • Other Database

    CIMRI

  • Reserve-Resource

    NORTHERN MINER, 1987; 2ND AND 3RD NUMBERS FROM INDUSTRIAL MINERALS, 1988; 4TH AND 5TH NUMBERS FROM NORTHERN MINER, 1988.

General comments

Subject category Comment text
Deposit WOLLASTONITE-BEARING UNIT DIPS 50-56 DEGREES AND HAS A CONTINUOUS SURFACE STRIKE OF 1200 M WITH A VARIABLE WIDTH OF 1 TO 100 M. SKARN ZONE IS A SILICIFIED DOLOMITE. WOLLASTONITE OCCURS AS MODULAR AGGREGATES OF WOLLASTONITE, CALCITE, AND PYRITE, 1- 20 CM IN DIAMETER OR AS THIN BANDS OF RADIATING NEEDLES AND FIBERS IN A FINE- TO MEDIUM-GRAINED CALCITE MATRIX.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1989 Orris, Greta J. U.S. Geological Survey
Updater 01-DEC-1990 Orris, Greta J. U.S. Geological Survey
Updater 27-DEC-1994 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

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