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Granitic Gneiss Rock Quarries No. El-005

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. 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 10067819
MRDS ID W000665
Record type Site
Current site name Granitic Gneiss Rock Quarries No. El-005

Geographic coordinates

Geographic coordinates: -73.17537, 41.22082 (WGS84)

Site location context

Political divisions (FIPS codes)

Fairfield(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bridgeport(quadrangle 1:24,000 scale)

Bridgeport(quadrangle 1:100,000 scale)

Hartford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Saugatuck(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

  • INFORMATION LACKING. HOMOGENOUS, VERY WELL FOLIATED, FINE TO MEDIUM GRAINED, STRONGLY LINEATED DUE TO ELONGATION OF MICA FLAKES. FRESH SURFACES, LIGHT BLUISH GRAY; WEATHERED SURFACES, TAN. ADDITIONAL SMALL QUARRY 450 FEET TO NNE. GRANITIC BODY ABOUT 1000 FEET LONG, 200 FEET WIDE, AND TRENDS NE.

Materials information

Materials Type of material
Gneiss Ore
Apatite Gangue
Biotite Gangue
Magnetite Gangue
Microcline Gangue
Muscovite Gangue
Plagioclase Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Early Devonian
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -73.17537, 41.22082
ListMap

Economic information

Ore body information

  • Length 304.8M
    Width 200M

Controls for ore emplacement

  • Metamorphosed Granitic Intrusive

Comments on the geologic information

  • GEOL.DESC: PERMIAN GRANITIC INTRUSIVES, PINEWOOD ADAMELLITE AND RHYOLITE PORPHYRY POST DATE MIDDLE PALEOZOIC METAMORPHIC EVENT; RHYOLITE DATED 250 M.Y. BY RB AND SR METHOD. GRANITIC BODY IN CAMBRIAN ORDOVICIAN PUMPKIN GROUND MEMBER, PROSPECT GNEISS FORMATION

Economic information about the deposit and operations

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

Mining district

District name Bridgeport

Comments on the production information

  • INFORMATION LACKING. PROBABLY ONLY SMALL AMOUNT OF BUILDING STONE PRODUCED

Comments on the reserve resource information

  • FIGURES LACKING. LARGE VOLUME OF ROCK REMAINS; SITES NOW IN HOUSING DEVELOPMENT

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    CROWLEY, W.P., 1968, "BEDROCK GEOL. BRIDGEPORT QUAD.", CONN. GEOLOGICAL SURVEY, QUAD REPORT NO. 24, MAP, TEXT, P. 53,7

  • Production

    CROWLEY, 1968

General comments

Subject category Comment text
Deposit CROWLEY'S MAP AT 1:24000 LOCATES QUARRIES BY SYMBOL ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-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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