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Marysville Magnesite Occurrence

Occurrence in British Columbia, Canada with commodity Magnesite
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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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10023443
MRDS ID I000412
Record type Site
Current site name Marysville Magnesite Occurrence

Geographic coordinates

Geographic coordinates: -115.95107, 49.59987 (WGS84)
Relative position SOUTH OF MARYSVILLE BETWEEN PERRY CREEK AND THE ST. MARY RIVER NEAR ANTWERP CREEK.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fernie(quadrangle 1:250,000 scale)

Geographic areas

Country State
Canada British Columbia

Commodities

Commodity Importance
Magnesite Primary

Materials information

Materials Type of material
Magnesite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Cranbrook Formation
    Rock description Cranbrook Formation
    Stratigraphic age (youngest) Early Cambrian
    Stratigraphic age (youngest) Early Cambrian

Nearby scientific data

(1) -115.95107, 49.59987
ListMap

Economic information

Comments on the geologic information

  • THE CRANBROOK FM IN THE AREA IS ABOUT 300 M THICK. IT IS COMPOSED OF THICK, VARICOLORED MEDIUM-TO-COARSE-GRAINED QUARTZITE BEDS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1932

Comments on the workings information

  • SMALL QUARRY, TRENCHES.

Comments on development

  • THIS OCCURRENCE HAS BEEN EXTENSIVELY TESTED BY DRILLING, TRENCHING, GEOLOGICAL MAPPING, AND BULK SAMPLING ALONG A STRIKE LENGTH OF ABOUT 5.5 KM. IN 1941, ABOUT 2.7 KT WERE SHIPPED TO TRAIL BY COMINCO FOR TESTING AND PROCESSING. NO COMMERCIAL PRODUCTION HAS RESULTED.

Reference information

Bibliographic references

  • Deposit

    HAMILTON, W.N., AND HORA, Z.D., 1987, OPPORTUNITIES EXIST FOR INDUSTRIAL MINERALS DEVELOPMENT IN BRITISH COLUMBIA AND ALBERTA: MINING ENGINEERING, V. 39, NO. 12, P. 1061-1067

General comments

Subject category Comment text
Deposit CRYSTALLINE MAGNESITE OCCURS IN THE UPPER 100 M OF THE CRANBROOK FM. SEDIMENTS. THE LOWER QUARTZITES GRADE UPWARD INTO A 35-45 M THICK, ALTERNATING SEQUENCE OF QUARTZITES AND CARBONATES CONTAINING DISCONTINUOUS HORIZONS OF MAGNESITE. OVERLYING HIS IS ABOUT 15 M OF MASSIVE, COARSE GRAINED MAGNESITE, WHICH IN TURN IS OVERLAIN BY AN UPPER ZONE OF CARBONATE, QUARTZITE, AND MAGNESITE. THE MAGNESITE RICH SEDIMENTS ARE TRACEABLE ALONG STRIKE FOR A DISTANCE OF ABOUT 6 KM. AT THE EXPLORATION QUARRY, THE MAGNESITE IS 15 M THICK AND EXPOSED FOR ABOUT 109 M ALONG STRIKE.
Deposit Discovery Year: EARLY 1930'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1991 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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