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  3. Mineral Resource Data System (MRDS)

West Placer Area

Prospect in Cecil county in Maryland, United States with commodities Aluminum, Calcium, Chromium, Iron, Magnesite, Silica, Titanium
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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. 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. Reporter information

Geologic information

Identification information

Deposit ID 10243287
MAS/MILS ID 0240150011
Record type Site
Current site name West Placer Area
Alternate or previous names West Placer, Swaggarts Run, Sweigarts Run, Preston Placer, Thornbottom Run

Comments on the site names

  • OTHER NAMES: SWAGGARTS RUN, SWEIGARTS RUN, THORNBOTTOM RUN, PRESTON PLACER.

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -76.17684, 39.71892 (WGS84)
Elevation 91

Site location context

Political divisions (FIPS codes)

Cecil(county)

Maryland(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Conowingo Dam(quadrangle 1:24,000 scale)

York(quadrangle 1:100,000 scale)

Baltimore(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Susquehanna(hydrologic unit)

Lower Susquehanna(hydrologic accounting unit)

Susquehanna(hydrologic subregion)

Mid Atlantic(hydrologic region)

Geographic areas

Country State County
United States Maryland Cecil

Comments on the location information

  • UTM LOCATION IS APPROXIMATE CENTER OF DEPOSIT SUBSEQUENT WEATHERING HAS FREED FINELY DIVIDED CHROMITE THROUGH DISINTEGRATION OF THE SERPENTINES THE CHROMITE HAS ACCRUED AS MINABLE SAND AND GRAVEL PLACERS DURING WORLD WAR 1 83 TEST PITS WERE TAKEN TO BEDROCK AND EXPERIMENTS WERE MADE BY MIT TO DETERMINE HOW THE SANDS EST BE CONCENTRATED SIX SAMPLES WERE TAKEN TO BEDROCK BY USB 1943 TWO SAMPLES FROM THIS PROPERTY WERE TREATED BY HEAVY LIQUID SEPARATIONS AND SEIVE ANALYSIS IN 1943 BY THE USGS OWNERSHIP DATA TAKEN FROM WAR MINERAL REPORT REC FILENO.547 THE CR FE 1.0 1.0 AS GIVEN IN USGS BULL 1082K TABLE 6 SAMPLE NOT MEET CURRENT GSA SPECS FOR TYPE CLASSIFICATION PURPOSES NERAL HOWEVER THE PA AND MD /RES WERE MOST EXTENSIVELY USED THE CHEMICAL INDUSTRY

Commodities

Commodity Importance
Aluminum Critical Tertiary
Calcium Tertiary
Chromium Critical Primary
Iron Tertiary
Magnesite Tertiary
Silica Tertiary
Titanium Critical Tertiary

Materials information

Materials Type of material
Chromite Unknown

Nearby scientific data

Ore Body (1) -76.17684, 39.71892
ListMap

Economic information

Ore body information

  • Thickness 1M
    Length 1524M
    Width 76M
    Area 11.7HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 PLACER
    Shape of Orebody #1 TABULAR
    Primary mode of Origin SEDIMENTATION
    Primary Ore Control LITHOLOGY
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 1
    Total Surface Area (HA) 11.6999
    Date of Last Modification 820616

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Both
Significant Yes
Mining method Alluvial Mining
Milling method Gravity

Mining district

District name State Line District

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Mrs Paul West
    Interest 100
    Home office Virginia
    Year 1943

Comments on the ownership information

  • OWNER: MRS. PAUL WEST.

Reserves and resources

  • Type In-situ
    Estimate year 1943
    Indicated 249000mt ore
    Demonstrated 249000mt ore
    Total resources 249000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 1.64 wt-pct Chromium Major 1943
  • Type In-situ
    Estimate year 1982
    Demonstrated 729000mt ore
    Total resources 729000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 1.4 wt-pct Chromium Major 1982

Comments on the reserve resource information

  • M9C4 = M1C1. DATA USED IN THE 1982 CHROMIUN AVAILABILITY---DOMESTIC IC, 8895

Workings at the site

  • Type of workings Surface
    Area 9.5HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Swell Factor .8
    Percent Waste Rock 0
    Avg. Overburden Thickness 0
    Hardness of Ore SAND, SILT
    Capacity 200
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 1.85
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 1
    Year of Information 1979

Reference information

Bibliographic references

  • Reserve-Resource

    SEE "R" 001-002 ABOVE.

  • Reserve-Resource

    BOM, IC,. 8895, CHROMIUM AVAILABILITY---DOMESTIC, 1982. P4,

  • Reserve-Resource

    TABLE 1.

  • Deposit

    PEARRE N HEYL A USGS BULL 1082K PGS 784-785

  • Deposit

    SINGEWALD J THE CHROME INDUSTRY IN MD MD GEOL SUR VOL 12 192

  • Deposit

    JERMAIN, G.D., WAR MINERALS REPORT NO 5&7 USBM, 1943

  • Deposit

    HUNTER,W.L. AND G.V.SULLIVAN.UTILIZATION STUDIES ON CHROMITE

  • Deposit

    FROM SEIAD CREEK, CALIFORNIA. BUMINES RI15576,1960,PP22-23

Reporter information

Type Date Name Affiliation Comment
Reporter 03-MAR-1995 Cpm 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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