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Treadwell Biotite Gneiss Granite Rock Quarry

Past Producer in Fairfield county in Connecticut, United States with commodity Stone, Dimension
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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. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10068092
MRDS ID W001017
Record type Site
Current site name Treadwell Biotite Gneiss Granite Rock Quarry
Related records 10288761

Geographic coordinates

Geographic coordinates: -73.46177, 41.4211 (WGS84)

Site location context

Political divisions (FIPS codes)

Fairfield(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Danbury(quadrangle 1:24,000 scale)

Bridgeport(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 Fairfield

Commodities

Commodity Importance
Stone, Dimension Primary

Comments on the commodity information

  • OPENED ABOUT 1895. WORKED SPORADICALLY AT LEAST TILL 1911, FROM TWO LEDGES ALONG HILLSIDE. GNEISS FOLIATION STRIKES N. 45 TO 55 DEG. WEST, DIPS 50 DEG. NE. TO VERTICAL. DARK TO MEDIUM PINKISH GRAY; UNEVENLY BANDED; FINE GRAINED. USED LOCALLY.

Materials information

Materials Type of material
Biotite Gangue
Feldspar Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -73.46177, 41.4211
ListMap

Economic information

Controls for ore emplacement

  • Metamorphosed Granitic Intrusive

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Year of first production 1895
Production years 1895 TO AT LEAST 1911

Mining district

District name Danbury

Comments on the production information

  • FIGURES LACKING BUT PRODUCTION PROBABLY SMALL FROM SMALL WORKINGS.

Comments on the reserve resource information

  • FIGURES LACKING, LARGE VOLUME OF ROCK REMAINS BUT SITE NOW HOUSING DEVELOPMENT.

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    DALE, T. N., 1911, "GRANITES OF CONN.", USGS, BULL. 484, MAP, TEXT, PG. 55

  • Production

    DALE, 1911.

General comments

Subject category Comment text
Deposit USGS, TOPO, 1963, "DANBURY", AT 1:24000 SHOWS SITE AREA WITHIN HOUSING DEVELOPMENT ; 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.

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