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Eckerlein Quartz Monzonite Rock Quarries

Past Producer in New London 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. Ownership information
  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 10067747
MRDS ID W000577
Record type Site
Current site name Eckerlein Quartz Monzonite Rock Quarries
Related records 10215867

Geographic coordinates

Geographic coordinates: -72.01978, 41.3811 (WGS84)

Site location context

Political divisions (FIPS codes)

New London(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Uncasville(quadrangle 1:24,000 scale)

New Haven(quadrangle 1:100,000 scale)

Hartford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Thames(hydrologic unit)

Connecticut Coastal(hydrologic accounting unit)

Connecticut Coastal(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Connecticut New London

Commodities

Commodity Importance
Stone, Dimension Primary

Comments on the commodity information

  • IN 1911, OPERATOR ROBERT ECKERLEIN. QUARRY OPENED IN 1855. IN 1911, PIT 150 FEET LONG, 100 FEET WIDE, 25 TO 40 FEET DEEP. GRANITE DIKE TRENDS NE., MODERATE DIP TO SOUTHEAST. SHEETS 22 INCHES TO 13 FEET THICK, DIP GENTLY EAST AND SOUTH. CUT BY 4 FOOT PEGMATITE DIKE WITH STRIKE N. 10 DEG. WEST AND DIPS 50 DEG. WEST. GRANITE MEDIUM TO DARK GREENISH GRAY COLOR, WITH EVEN GRAINED FINE GRANITIC TEXTURE. TWO ADDITIONAL GRANITE DIKE QUARRY SITES; ONE LOCATED 400 TO SSW. ON SAME DIKE, OTHER 500 FEET TO SW. ON ADJACENT PARALLEL GRANITIC DIKE.

Materials information

Materials Type of material
Allanite Gangue
Apatite Gangue
Biotite Gangue
Magnetite Gangue
Microcline Gangue
Muscovite Gangue
Oligoclase Gangue
Orthoclase Gangue
Quartz Gangue
Rutile Gangue

Analytical data

Result OLIGOCLASE 35.18%, QUARTZ 29.90%, MICROCLINE AND ORTHOCLASE 29.67%, BIOTITE 4.16%, MAGNETITE 1.09%.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -72.01978, 41.3811
ListMap

Economic information

Controls for ore emplacement

  • Intrusive Granitic Dike; Part Of Dike Cluster

Comments on the geologic information

  • GEOL.DESC: ESTIMATED MINERALS IN PERCENT IN GRANITE ARE OLIGOCLASE 35.18, QUARTZ 29.90, MICROCLINE AND ORTHOCLASE 29.67, BIOTITE 4.16, MAGNETITE 1.09. PEGMATITE DIKE HAS FELDSPARS UP TO 12 INCHES, MUSCOVITE TO 6 INCHES.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Year of first production 1855
Production years 1855 TILL AT LEAST 1911

Mining district

District name Groton

Ownership information

  • Type Operator
    Owner Eckerlein, Robert

Comments on the production information

  • FIGURES LACKING, MODERATE AMOUNT OF GOOD MONUMENT STONE PRODUCED.

Comments on the reserve resource information

  • FIGURES LACKING. LARGE VOLUME OF ROCK AVAILABLE FROM DIKE CLUSTER.

Workings at the site

  • Type of workings Unknown
    Overall length 45.72M
    Overall width 30.48M

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    GOLDSMITH, R., 1967, "BEDROCK GEOL. MAP UNCASVILLE QUAD.", USGS, GQ 576

  • Production

    DALE, 1911.

General comments

Subject category Comment text
Deposit GOLDSMITH'S MAP AT 1:24000 LOCATES QUARRIES BY SYMBOL. ; 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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