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Ritch Diorite Gneiss 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. Ore body information
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10105481
MRDS ID W000626
Record type Site
Current site name Ritch Diorite Gneiss Rock Quarry
Related records 10215979

Geographic coordinates

Geographic coordinates: -73.64345, 41.00917 (WGS84)

Site location context

Political divisions (FIPS codes)

Fairfield(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Glenville(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

  • QUARRY WORKED BY W. AND S. RITCH IN 1911. QUARRY ABOUT 200 FOOT SQUARE AND 40 FEET DEEP. GNEISS FOLIATION N. 20 DEG. EAST AND DIP VERTICAL. SHEETS 2 TO 3 FEET THICK, GENERALLY SEPARATED BY THIN APLITE DIKES WHICH DIP 25 DEG. WEST. SOME PEGMATITE DIKES 16 INCHES THICK. DARK BLUISH GRAY IN COLOR WITH COARSE PORPHYRITIC GNEISSOSE TEXTURE. USED FOR BUILDINGS.

Materials information

Materials Type of material
Andesine Gangue
Apatite Gangue
Microcline Gangue
Orthoclase Gangue
Pyrite Gangue
Quartz Gangue
Zircon Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Stratigraphic age (youngest) Late Ordovician

Nearby scientific data

(1) -73.64345, 41.00917
ListMap

Economic information

Ore body information

  • Strike N. 20 DEG. EAST
    Dip VERTICAL

Controls for ore emplacement

  • Metamorphosed Granitic Intrusive

Comments on the geologic information

  • GEOL.DESC: AVERAGE BREAKING POINT 164 POUNDS, RUPTURE POINT 3507 POUNDS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Production years ABOUT 1907 TO 1911

Mining district

District name Greenwich

Ownership information

  • Type Operator
    Owner W. And S. Ritch
    First year 1911

Comments on the production information

  • FIGURES LACKING BUT PROBABLY MODERATE AMOUNT OF GOOD BUILDING STONE PRODUCED.

Comments on the reserve resource information

  • FIGURES LACKING, LARGE VOLUME OF ROCK REMAINS BUT SITE LOCATION POOR AS ADJACENT TO SUPERHIGHWAY.

Workings at the site

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

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    DALE, T.N., 1911, "GRANITES OF CONN.", USGS, BULL. 484, MAPS, TEXT, P. 57-58

  • Production

    DALE, 1911

General comments

Subject category Comment text
Deposit USGS, TOPO, 1960, "GLENVILLE", AT 1:24000 SHOWS SITE AS SEMI CIRCULAR TROUGH. ; 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.

Maps centered on this site