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Sachem Head Granite Gneiss Rock Quarry

Past Producer in New Haven 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. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10068044
MRDS ID W000958
Record type Site
Current site name Sachem Head Granite Gneiss Rock Quarry
Related records 10191847

Geographic coordinates

Geographic coordinates: -72.70758, 41.24499 (WGS84)

Site location context

Political divisions (FIPS codes)

New Haven(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Guilford OE S(quadrangle 1:24,000 scale)

New Haven(quadrangle 1:100,000 scale)

Hartford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Pawcatuck River(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, Dimension Primary

Comments on the commodity information

  • OPENED BEFORE 1893. OPERATED BY BREAKWATER CO. IN 1911. IN 1911, QUARRY ABOUT 1000 FEET LONG WITH WORKING FACE 25 TO 50 FEET HIGH ON EAST SIDE. GNEISS FOLIATION STRIKES N. 70 DEG. EAST AND CURVES VERTICALLY. SHEETS 3 TO 8 FEET THICK. SOME PEGMATITE STREAKS. GRANITE COLOR MEDIUM REDDISH GRAY, MEDIUM TO FINE GRAINED GNEISSOSE TEXTURE

Materials information

Materials Type of material
Albite Gangue
Apatite Gangue
Magnetite Gangue
Microcline Gangue
Muscovite Gangue
Oligoclase Gangue
Orthoclase Gangue
Quartz Gangue
Zircon Gangue

Host and associated rocks

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

Nearby scientific data

(1) -72.70758, 41.24499
ListMap

Economic information

Ore body information

  • Thickness 2.44M
    Length 304.8M

Controls for ore emplacement

  • Granitic Intrusive

Comments on the geologic information

  • GEOL.DESC: THIS AREA OF MONSON GNEISS FORMERLY STONY CREEK GRANITIC GNEISS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Year of first production 1893
Production years BEFORE 1893 TILL AT LEAST 1911

Mining district

District name Guilford

Ownership information

  • Type Operator
    Owner Breakwater Co.
    First year 1911

Comments on the production information

  • FIGURES LACKING, BUT VERY LARGE AMOUNTS OF STONE PRODUCED.

Comments on the reserve resource information

  • FIGURES LACKING. LARGE VOLUME OF ROCK REMAINS, BUT AREA NOW NEAR SEA LEVEL AND URBANIZED.

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    DALE, T. N., 1911, "GRANITES OF CONN.", USGS, BULL. 484, MAPS, TEXT, PG. 88 TO 90

  • Production

    DALE, 1911.

General comments

Subject category Comment text
Deposit USGS, TOPO, 1968, "GUILFORD", AT 1:24000 DOES NOT INDICATE THIS PART OF SACHEM HEAD WAS NEARLY ALL QUARRY SITE. ; 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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