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Black Mountain Quarries

Past Producer in Oxford county in Maine, United States with commodities Beryllium, Feldspar, Lithium, Mica, Tin
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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. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10169842
MAS/MILS ID 0230170002
Record type Site
Current site name Black Mountain Quarries

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -70.64633, 44.58556 (WGS84)
Elevation 518
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Oxford(county)

Maine(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

East Andover(quadrangle 1:24,000 scale)

Rumford(quadrangle 1:100,000 scale)

Lewiston(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Androscoggin River(hydrologic unit)

Androscoggin(hydrologic accounting unit)

Androscoggin(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Maine Oxford

Commodities

Commodity Importance
Beryllium Critical Tertiary
Feldspar Tertiary
Lithium Critical Tertiary
Mica Tertiary
Tin Critical Tertiary

Materials information

Materials Type of material
Alabandite Unknown
Beryl Unknown
Cassiterite Unknown
Columbite Unknown
Garnet Unknown
Quartz Unknown
Spodumene Unknown
Tantalite Unknown
Tourmaline Unknown

Nearby scientific data

Ore Body (1) -70.64633, 44.58556
ListMap

Economic information

Ore body information

  • Thickness 3M
    Area 1HA
    Field Value
    Type of Orebody #1 PEGMATITE
    Primary mode of Origin MAGMATIC DIFFER
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control IGNEOUS
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 OTHER
    Total Surface Area (HA) 1
    Date of Last Modification 820319

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Both
Significant No
Year of first production 1901

Mining district

District name Paris-Rumford

Mineral rights holdings

Type of mineral rights Fee Ownership
Type of mineral rights Private Lease
Type of mineral rights Minerals Only

Land status

Ownership category Private

Reserves and resources

  • Type In-situ
    Estimate year 1954
    Inferred 18mt ore
    Total resources 18mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 78.7699 wt-pct Tin Trace 1954
  • Type In-situ
    Estimate year 1954
    Indicated 2500mt ore
    Demonstrated 2500mt ore
    Inferred 2500mt ore
    Total resources 5000mt ore
    Commodity Subtype Grade units Group Importance Year
    Mica Mica 99.99 wt-pct Mica Trace 1954

Reference information

Bibliographic references

  • Deposit

    USBM WAR MINERALS REPORT NO E-62A 1942.

  • Deposit

    BASTIN E. USGS BUL. 445; 1911 PGS 95-97.

  • Deposit

    CAMERON E.,OTHERS USGS PP 255;1954 PG 60-65CONTAINS MAP,LOG

  • Deposit

    CORES, RESERVES,DIMENSIONS

  • Deposit

    USBM RI 4412 INVEST. BL. MT BERYL DEPOSITS OXFORD CO. MAINE

General comments

Subject category Comment text
Deposit DIMENSIONS-FROM CAMERON 1954-FIVE OPENCUTS WERE MADE IN TWO WEST TRENDING PEGMATITES DURING THE EARLY WORK AT BLK MT. TH ERN PEGMATITE,200 FT LONG AND 60 FT. WIDE AT THE CENTER,IS L SHAPED. THE CONTACTS STRIKE NORTHWEST IN GENERAL AND DIP FRO DEG.NE. THE EASTERN PEGMATITE,CONSISTING OF FOUR CONNECTED P ED BODIES,REPRESENTS THE UNDULATING BOTTOM OF A PARTLY ERODE LIKE MASS THAT STRIKES NORTHWEST AND DIPS GENTLY SOUTHWEST. INDIVIDUAL POD SHAPED BODIES RANGE IN SIZE FROM 100 FT. LONG FEET WIDE TO 300 FT. LONG AND 100FT WIDE. EACH MEMBER OF THI IS CONNECTED TO ADJ. PEGM. BY A NARROW NECK OF PEGM. 10-25 F THE CENTRAL PART OF THE EXPOSED PEGMATITE CONSISTS CHIEFLY O LANDITE AND QTZ. SMALL PARTICLES OF CASSITERITE ARE SCATTERED THROUGHOUT THE CLEAVLANDITE AND IN PLACES ARE ARRANGED IN PARALLEL CURVING BANDS. RESERVES- FROM CAMERON 1954-ESTIMATED TONNAGES OF PEGMATITE- BERYL-220 TONS- SCRAP MICA- 2500-3000 TONS IN PLACE, WITH AN NAL 50 TONS ON THE DUMPS , 20 TO 25 TONS OF LEPIDOLITE IN PL AN ADDITIONAL 18-20 TONS ON DUMPS,1000 TO 1500 TONS OF SPODU PLACE WITH AN EQUAL AMT ON DUMPS, 500 TONS PERTHITE IN PLACE THOUSAND TONS EACH OF CLEAVLANDITE AND QTZ REMAIN IN PLACE,W ILAR AMTS IN DUMP. RESERVES OF COLUMBITE-TANTALITE AND CASSITERITE ARE PROBABLY NOT MORE THAN 10 AND 25 TONS RESPECTIVELY. MATRIX 6 THE AMT. OF TIN IN CASSITERITE WAS CALCULATED AND R ON MATRIX 601 DEG-AMT. TAKEN FROM WMR. MICA WAS ALSO REPORTED. DATE OF COMMENTS 1975.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-84 Harrison 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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