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Gotta-Walden Feldspar Prospect 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. 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 10105450
MRDS ID W000386
Record type Site
Current site name Gotta-Walden Feldspar Prospect Quarry
Related records 10191946

Geographic coordinates

Geographic coordinates: -72.59369, 41.61916 (WGS84)

Site location context

Political divisions (FIPS codes)

Middlesex(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Middle Haddam(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

  • SHAFT 30 FEET DEEP; SHALLOW PITS AND TRENCHES. CIRCULAR OUTCROP 200 FEET IN DIAMETER. PEGMATITE TABULAR 2 TO 30 FEET THICK, STRIKES N 45 DEG. WEST TO N 80 DEG. WEST, DIP 25 TO 50 DEG. WEST. STRIKE LENGTH AT LEAST 410 FEET

Materials information

Materials Type of material
Plagioclase Ore
Quartz Ore
Biotite Gangue
Hornblende Gangue

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) -72.59369, 41.61916
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Economic information

Ore body information

  • Thickness 9.14M

Controls for ore emplacement

  • Pegmatite Dike

Comments on the geologic information

  • GEOL.DESC: DIKE PART OF NUMEROUS SWARMS OF PEGMATITE DIKES MOSTLY IN THE COLLINS HILL SCHIST AND ALSO IN EASTWARD ADJACENT GLASTONBURY GRANITE GNEISS; SOME DIKES ALSO 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, PROBABLY ONLY SMALL PRODUCTION, ESTIMATE BERYL 0.84%. PRODUCED FELDSPAR CONCENTRATES.

Comments on the reserve resource information

  • FIGURES LACKING, PROBABLY LARGE AMOUNTS OF FELDSPAR AVAILABLE FROM PEGMATITE DIKE SWARM.

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    CAMERON, E.N., 1954, "PEGMATITE INVEST. 1942-45, NEW ENGLAND," USGS, PP 255, TEXT, PG. 321-324, DRILL LOGS

General comments

Subject category Comment text
Deposit USGS TOPO, 1961, "MIDDLE HADDAM", AT 1:24000 LOCATES QUARRY BY SYMBOL. STUGARD'S MAP AT 1:24000 LOCATES PEGMATITE. BROOKINS' GIVES GEOCHRON DATES OF ABOUT 260 M.Y. FOR SIMILAR PEGMATITES. RECORDS IN USGS FILES. ; 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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