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Microscopic Fluorite Occurrence No. El-001

Occurrence in Fairfield county in Connecticut, United States with commodity Fluorine-Fluorite
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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. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10067816
MRDS ID W000661
Record type Site
Current site name Microscopic Fluorite Occurrence No. El-001

Geographic coordinates

Geographic coordinates: -73.17926, 41.24471 (WGS84)

Site location context

Political divisions (FIPS codes)

Fairfield(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bridgeport(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
Fluorine-Fluorite Critical Tertiary

Comments on the commodity information

  • INFORMATION LACKING. MICROSCOPIC FLUORITE COMMON IN GNEISS LAYERS WITH DISTINCTIVE RED AND GREEN HUES. OUTCROP SCHISTOSITY STRIKES N. 65 DEG. WEST, DIPS 18 DEG. SW.

Materials information

Materials Type of material
Fluorite Ore
Apatite Gangue
Biotite Gangue
Garnet Gangue
Magnetite Gangue
Microcline Gangue
Muscovite Gangue
Plagioclase Gangue
Quartz Gangue
Tourmaline Gangue

Host and associated rocks

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

Nearby scientific data

(1) -73.17926, 41.24471
ListMap

Economic information

Ore body information

  • Strike N. 65 DEG. WEST
    Dip 18 DEG. SW

Controls for ore emplacement

  • Metamorphosed Granite And Sedimentary Layers

Comments on the geologic information

  • GEOL.DESC: SHELTON FELDSPATHIC GNEISS FACIES EQUIVALENT TO METAMORPHOSED ANSONIA GRANITE IN ADJACENT QUAD. TO NE. MAJOR STRUCTURE ZONE TRENDS NE.; FURTHER NORTH FORMS WEST WALL OF CONN. TRIASSIC BASIN

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Significant No

Mining district

District name Trumbull

Comments on the reserve resource information

  • INFORMATION LACKING. LARGE VOLUME OF ROCK WITH VERY MINOR AMOUNTS OF FLUORITE, NEEDS STUDY; MODAL ANALYSES IN VOLUME PERCENT FOR FLUORITE FOR TWO SAMPLES ARE 0.5 AND 0.7.

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    CROWLEY, W. P., 1968, "BEDROCK GEOL. BRIDGEPORT QUAD.", CONN. GEOLOGICAL SURVEY, QUAD. REPORT NO. 24, MAP, TEXT, P. 26, 27

  • Reserve-Resource

    CROWLEY, 1968.

General comments

Subject category Comment text
Deposit CROWLEY'S MAP AT 1:125000 LOCATES OCCURRENCE BY SYMBOL. ; 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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