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Andrews Pegmatite Quarry

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. Controls for ore emplacement
  10. Economic information about the deposit and operations
  11. Mining district
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10067680
MRDS ID W000480
Record type Site
Current site name Andrews Pegmatite Quarry
Related records 10167239

Geographic coordinates

Geographic coordinates: -72.60008, 41.63082 (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

  • NEARLY CIRCULAR OUTCROP SHAPE OF PEGMATITE DIKE, 400 FEET LONG NE.-SW., 200 FEET WIDE NW.-SE. QUARRY NOT INDICATED ON TOPO MAP. ADDITIONAL PROSPECT 900 FEET DUE NORTH ON ANOTHER LARGER PEGMATITE DIKE.

Materials information

Materials Type of material
Feldspar Ore
Quartz Ore

Host and associated rocks

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

Nearby scientific data

(1) Portland Arkose
ListMap

Economic information

Controls for ore emplacement

  • Pegmatite Dike

Comments on the geologic information

  • GEOL.DESC: PART OF NUMEROUS PEGMATITE DIKE SWARMS TRENDING NNE. MOSTLY IN THE COLLINS HILL SCHIST AND ALSO IN THE WESTWARD ADJACENT PRE-ORDOVICIAN MIDDLETOWN GNEISS AND EASTWARD ADJACENT LOWER PALEOZOIC GLASTONBURY GRANITE GNEISS.

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 AMOUNTS OF FELDSPAR AVAILABLE FROM DIKE SWARM.

Workings at the site

  • Type of workings Unknown
    Overall length 121.92M
    Overall width 60.96M

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. 12,1

  • Production

    STUGARD, 1958

General comments

Subject category Comment text
Deposit STUGARD'S MAP AT 1:24000 LOCATES QUARRY. BROOKINS' GIVES GEOCHRON AGE DATE 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.

Maps centered on this site