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Granitic Gneiss Rock Quarry No. Ek-012

Past Producer in New Haven county in Connecticut, United States with commodity Stone
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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. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10068203
MRDS ID W001151
Record type Site
Current site name Granitic Gneiss Rock Quarry No. Ek-012

Geographic coordinates

Geographic coordinates: -73.07259, 41.35971 (WGS84)

Site location context

Political divisions (FIPS codes)

New Haven(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ansonia(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 New Haven

Commodities

Commodity Importance
Stone Primary

Comments on the commodity information

  • INFORMATION LACKING. TOPO SHOWS QUARRY ABOUT 200 FEET LONG, 100 FEET WIDE, WITH SMALL POND, EXTENDING SW. INTO HILLSIDE. GRANITIC GNEISS MEDIUM GRAINED, WELL FOLIATED, WELL LINEATED, VERY PALE BLUISH GRAY TO YELLOWISH GRAY. GRANITIC BODY ABOUT 5600 FEET LONG, LESS THAN 900 FEET WIDE, WITH FOLIATION STRIKE N. 35 DEG. EAST, DIP 55 DEG. SE. TOPO SHOWS ADDITIONAL QUARRY 400 FEET TO SSW. TO BE ABOUT 200 FEET WIDE, AND EXTENDING ABOUT 100 FEET NW. INTO HILLSIDE; A THIRD QUARRY, 900 FEET NORTH OF MAIN QUARRY IS SHOWN BY TOPO TO BE LESS THAN 100 FEET WIDE AND LONG, EXTENDING NORTH INTO HILLSLOPE.

Materials information

Materials Type of material
Gneiss Ore
Apatite Gangue
Biotite Gangue
Garnet Gangue
Microcline Gangue
Muscovite Gangue
Quartz Gangue
Tourmaline Gangue
Zircon Gangue

Host and associated rocks

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

Nearby scientific data

(1) -73.07259, 41.35971
ListMap

Economic information

Ore body information

  • Strike N. 35 DEG. EAST
    Dip 55 DEG. SE
    Length 1706.88M
    Width 900M

Controls for ore emplacement

  • Metamorphosed Granitic Intrusive

Comments on the geologic information

  • GEOL.DESC: MICROCLINE CONTENT HIGHEST WHERE ASSOCIATED WITH OLDER CAMBRIAN ORDOVICIAN METAMORPHOSED GRANITIC INTRUSIVE PROSPECT GNEISS; ELSE MORE PLAGIOCLASE. ANSONIA GNEISS GRANITIC TO QUARTZ DIORITIC BUT COMMONLY QUARTZ MONZONITIC GNEISS. XENOLITHS COMMON.

Economic information about the deposit and operations

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

Mining district

District name Ansonia

Comments on the production information

  • INFORMATION LACKING. SIZE OF PITS INDICATE MODERATE AMOUNT OF CONSTRUCTION STONE PROBABLY PRODUCED.

Comments on the reserve resource information

  • FIGURES LACKING. LARGE VOLUME OF ROCK REMAINS, BUT SITES IN HOUSING DEVELOPMENT AREAS.

Workings at the site

  • Type of workings Unknown
    Overall length 60.96M
    Overall width 30.48M

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    ARMSTRONG, R. L., 1970, "CONTRI. TO GEOCHRON. CONN.", CONN. GEOLOGICAL SURVEY, R. I. NO. 5, MAP, TEXT, PG. 19 TO 28

  • Production

    FRITTS, 1965.

General comments

Subject category Comment text
Deposit FRITTS' MAP AT 1:24000 LOCATES QUARRIES BY SYMBOL. USGS, TOPO, 1964, "ANSONIA" AT 1:24000, SHOWS QUARRIES BY TOPOGRAPHY. ARMSTRONG GIVES GEOCHRON DATE OF ANSONIA AS 321 M. Y., MISSISSIPPIAN. ; 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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