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Feldspar Pegmatite Quarry No. Cj-021

Past Producer in Middlesex county in Connecticut, United States with commodity Feldspar
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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. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10067595
MRDS ID W000383
Record type Site
Current site name Feldspar Pegmatite Quarry No. Cj-021
Related records 10142964

Geographic coordinates

Geographic coordinates: -72.59591, 41.62555 (WGS84)

Site location context

Political divisions (FIPS codes)

Middlesex(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Glastonbury(quadrangle 1:24,000 scale)

Hartford(quadrangle 1:100,000 scale)

Hartford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Outlet Connecticut River(hydrologic unit)

Lower Connecticut(hydrologic accounting unit)

Connecticut(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Connecticut Middlesex

Commodities

Commodity Importance
Feldspar Primary

Comments on the commodity information

  • TOPO SHOWS SMALL QUARRY IN PEGMATITE DIKE WITH THREE SMALL PITS AND ONE TRENCH, EACH ABOUT 100 FEET LONG NORTH-SOUTH, 25 FEET WIDE EAST-WEST AND 10 FEET DEEP. PEGMATITE DIKE TRENDS NNE, ABOUT 800 FEET LONG, 75 FEET WIDE.

Materials information

Materials Type of material
Feldspar Ore
Quartz Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite

Nearby scientific data

(1) Portland Arkose
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Economic information

Ore body information

  • Length 243.84M
    Width 75M

Controls for ore emplacement

  • Pegmatite Dike

Comments on the geologic information

  • GEOL.DESC: DIKE PART OF NUMEROUS SWARMS OF PEGMATITE DIKES MOSTLY IN COLLINS HILL SCHIST BUT ALSO IN GLASTONBURY GNEISS, AND A FEW IN WESTWARD ADJACENT PRE-ORDOVICIAN MIDDLETOWN GNEISS. ZONE OF SWARMS AND INDIVIDUAL DIKES TREND MOSTLY NORTH

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Production years UNKNOWN

Mining district

District name Portland

Comments on the production information

  • FIGURES LACKING BUT PRODUCTION PROBABLY SMALL . PRODUCED FELDSPAR CONCENTRATES.

Comments on the reserve resource information

  • FIGURES LACKING BUT PROBABLY LARGE AMOUNT OF FELDSPAR AVAILABLE FROM PEGMATITE DIKE SWARM.

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    BROOKINS, D.G., 1970," CONTRI. TO GEOCHRON. IN CONN.," CONN. GEOLOGICAL SURVEY. R.I. NO.5, TEXT, PG. 12, 13

  • Production

    STUGARD, 1958

General comments

Subject category Comment text
Deposit BROOKINS' GIVES GEOCHRON DATES OF ABOUT 260 M.Y. FOR SIMILAR PEGMATITE DIKES. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-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.

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