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Roebling Mica, Feldspar, Beryl Mine

Past Producer in Litchfield county in Connecticut, United States with commodities Mica, Feldspar, Gemstone
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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. Ore body information
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10067757
MRDS ID W000590
Record type Site
Current site name Roebling Mica, Feldspar, Beryl Mine
Related records 10216284

Geographic coordinates

Geographic coordinates: -73.4351, 41.65638 (WGS84)

Site location context

Political divisions (FIPS codes)

Litchfield(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Kent(quadrangle 1:24,000 scale)

Waterbury(quadrangle 1:100,000 scale)

Hartford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Housatonic(hydrologic unit)

Connecticut Coastal(hydrologic accounting unit)

Connecticut Coastal(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Connecticut Litchfield

Commodities

Commodity Importance
Mica Primary
Feldspar Primary
Gemstone Primary

Comments on the commodity information

  • OWNED BY JACOB ORZECH IN 1944. BETWEEN 1880 AND 1900 MINED FOR MICA, FELDSPAR, BERYL. SINCE 1936 MINED BY ORZECH'S SONS FOR GEM BERYL CRYSTALS COMMONLY 3 INCHES LONG, 2 INCHES IN DIAMETER, AND SOME MORE THAN 12 INCHES IN DIAMETER. WORKINGS TWO OPEN CUTS. ONE QUARRY 420 FEET LONG, AND 60 FEET WIDE AND DEEP ON PEGMATITE BODY THAT AVERAGES 30 FEET THICK, WITH STRIKE N. 55 DEG. EAST, DIP 60 DEG. NW. THE OTHER QUARRY IS 90 FEET LONG, 40 FEET WIDE, AND 20 FEET DEEP ON 4 PEGMATITE DIKES THAT STRIKE N. 40 DEG. EAST AND DIP NORTH AT MODERATE TO STEEP ANGLES. THE DIKES RANGE FROM 5 TO 20 FEET THICK, MINED CHIEFLY FOR FELDSPAR. MINED FOR MICA FOR TWO WEEKS IN 1944 BY CYRIL ULMAN.

Materials information

Materials Type of material
Muscovite Ore
Plagioclase Ore
Quartz Ore
Biotite Gangue
Garnet Gangue
Tourmaline Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite

Nearby scientific data

(1) -73.4351, 41.65638
ListMap

Economic information

Ore body information

  • Strike N. 55 DEG. EAST
    Dip 60 DEG. NW
    Thickness 9.14M

Controls for ore emplacement

  • Pegmatite Dike

Comments on the geologic information

  • GEOL.DESC: PEGMATITE DIKE IN SILICIFIED QUARTZ MICA SCHIST OF THE WARAMAUG BIOTITE QUARTZ GNEISS (BERKSHIRE SCHIST) NEAR THE CONTACT WITH THE CAMBRO-ORDOVICIAN STOCKBRIDGE MARBLE FORMATION.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No

Mining district

District name Kent

Ownership information

  • Type Operator
    Owner Jacob Orzech
    First year 1944

Comments on the production information

  • GEM BERYL SALE OF 4 YEARS PRODUCTION PRIOR TO 1944. MICA BOOKS SMALL AND EXTREMELY DEFORMED. ESTIMATE OF BERYL CONTENT 0.7%.

Comments on the reserve resource information

  • FIGURES LACKING BUT MODERATE AMOUNT OF FELDSPAR AVAILABLE FROM QUARTZ-PERTHITE PEGMATITE DEPOSIT.

Workings at the site

  • Type of workings Unknown
    Overall length 128.02M
    Overall width 18.29M

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    CAMERON, E. N., 1954, "PEGMATITE INVEST. 1942-45, NEW ENGLAND", USGS, PROF. PAPER 255, TEXT, P. 305-307

  • Production

    CAMERON, 1954

General comments

Subject category Comment text
Deposit CAMERON SHOWS MINE MAP PAGE 306. REPORT IN USGS FILES. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1972 D'Agostino, John P. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site