1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Millstone Quartz Monzonite Rock Quarry

Past Producer in New London county in Connecticut, United States with commodity Stone, Dimension
Map
XML
JSON
KML
B
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 10105467
MRDS ID W000546
Record type Site
Current site name Millstone Quartz Monzonite Rock Quarry
Related records 10264602

Geographic coordinates

Geographic coordinates: -72.16507, 41.30777 (WGS84)

Site location context

Political divisions (FIPS codes)

New London(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Niantic(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

  • OPENED 1830. IN 1911 WORKED BY HENRY GARDINER. QUARRY ON TOPO SHEET 1400 FEET LONG NW. TO SE., 400 FEET WIDE NE. TO SW., AND 50 TO 150 FEET DEEP. INTRUSIVE EXTENDS COMPLETELY ACROSS MILLSTONE PROMONTORY, AS BELT 3800 FEET LONG, TRENDING NW., AND 200 TO 250 FEET WIDE. GRANITE MEDIUM TO DARK GRAY, OF EVEN GRAINED GRANITIC FINE TEXTURE. GRANITE SHEETS MOSTLY 2 TO 8 FEET THICK. GNEISS CAP ABOUT 25 FEET THICK ON NE. WALL HAS FOLIATION STRIKE N. 70 DEG. W., DIP 25 DEG. N. 20 DEG. E.;ON SOUTH SHORE GNEISS FOLIATION STRIKE N. 85 DEG. E., DIP STEEP NORTH. SOME PEGMATITES 2 TO 3 FEET THICK. MANY USES FOR STONE. TWO OTHER QUARRY SYMBOLS SHOWN BY GOLDSMITH IN SAME QUARRY, ONE 300 FEET TO SE., OTHER 300 FEET TO ENE.

Materials information

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

Analytical data

Result OLIGOCLASE-ALBITE 34.22
Result MICROCLINE AND ORTHOCLASE 31.81
Result QUARTZ 25.54
Result BIOTITE 7.21
Result MAGNETITE 0.93
Result ALLANITE 0.29.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Stratigraphic age (youngest) Mississippian
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -72.16507, 41.30777
ListMap

Economic information

Ore body information

  • Length 1158.24M
    Width 250M

Controls for ore emplacement

  • Intrusive Granite Dike

Comments on the geologic information

  • GEOL.DESC: ESTIMATED MINERAL CONTENT OF MILLSTONE QUARTZ MONZONITE IN PERCENT ARE OLIGOCLASE ALBITE 34.22; MICROCLINE AND ORTHOCLASE 31.81; QUARTZ 25.54; BIOTITE 7.21; MAGNETITE 0.93; ALLANITE 0.29.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Year of first production 1830
Production years 1830 TO PAST 1911

Mining district

District name Waterford

Comments on the production information

  • FIGURES LACKING, PROBABLY LARGE PRODUCTION OF GOOD MONUMENT STONE FROM LARGE QUARRY.

Comments on the reserve resource information

  • FIGURES LACKING. LARGE VOLUME OF ROCK REMAINS.

Workings at the site

  • Type of workings Unknown
    Overall length 426.72M
    Overall width 121.92M

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    GOLDSMITH, R., 1967, "BEDROCK GEOL. NIANTIC QUAD ", USGS, G Q 575

  • Production

    DALE, 1911

General comments

Subject category Comment text
Deposit GOLDSMITH'S MAP AT 1:24000 LOCATES QUARRIES BY SYMBOL. USGS, TOPO, 1970, "NIANTIC", AT 1:24000, SHOWS QUARRY SHAPE BY PURPLE OVERPRINT. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-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