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East Selden Mica, Beryl, Feldspar Quarry

Past Producer in Middlesex county in Connecticut, United States with commodities Feldspar, Mica, Niobium (Columbium), Tantalum, Beryllium
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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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  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 10099663
MRDS ID W000401
Record type Site
Current site name East Selden Mica, Beryl, Feldspar Quarry
Related records 10231589

Geographic coordinates

Geographic coordinates: -72.52852, 41.52999 (WGS84)

Site location context

Political divisions (FIPS codes)

Middlesex(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Middle Haddam(quadrangle 1:24,000 scale)

Hartford(quadrangle 1:100,000 scale)

Hartford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Outlet Connecticut River(hydrologic unit)

Lower Connecticut(hydrologic accounting unit)

Connecticut(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Connecticut Middlesex

Commodities

Commodity Importance
Feldspar Primary
Mica Primary
Niobium (Columbium) Critical Primary
Tantalum Critical Primary
Beryllium Critical Secondary

Comments on the commodity information

  • Owned and Mined By Worth Spar Co. Since 1942. Quarry 70 Feet Long Ne-Sw, 20 To 40 Feet Wide Nw-Se, Quarry Face Up To 20 Feet High, On Pegmatite Dike At Least 200 Feet Long, 34 Feet Wide, Strike N. 25 Deg. West, Dip About 70 Deg. East. Three Other Prospec
  • OWNED AND MINED BY WORTH SPAR CO. SINCE 1942. QUARRY 70 FEET LONG NE-SW, 20 TO 40 FEET WIDE NW-SE, QUARRY FACE UP TO 20 FEET HIGH, ON PEGMATITE DIKE AT LEAST 200 FEET LONG, 34 FEET WIDE, STRIKE N. 25 DEG. WEST, DIP ABOUT 70 DEG. EAST. THREE OTHER PROSPECTS ON THREE DIFFERENT NEARBY PEGMATITE DIKES LOCATED 600 FEET NE., 1500 FEET WEST, AND 800 FEET SOUTH.

Materials information

Materials Type of material
Tantalite Ore
Columbite Ore
Quartz Ore
Feldspar Ore
Beryl Ore
Plagioclase Ore
Muscovite Ore
Tantalite Gangue
Columbite Gangue
Tourmaline Gangue
Garnet Gangue

Mineral occurrence model information

Model code 33
USGS model code 13a
Deposit model name Be-Li pegmatites

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite

Nearby scientific data

(1) -72.52852, 41.52999
ListMap

Economic information

Ore body information

  • Length 60.96M
    Width 34M

Comments on the geologic information

  • Geol.Desc: Swarm of Pegmatite Dikes; Numerous Swarms of Dikes In Narrow North-South Zone Mostly In the Collins Hill Schist Formation. Individual Dikes Trend Mostly Northward.
  • GEOL.DESC: SWARM OF PEGMATITE DIKES; NUMEROUS SWARMS OF DIKES IN NARROW NORTH-SOUTH ZONE MOSTLY IN THE COLLINS HILL SCHIST FORMATION. INDIVIDUAL DIKES TREND MOSTLY NORTHWARD.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Significant No
Production years 1942

Mining district

District name East Hampton

Ownership information

  • Type Owner-Operator
    Owner Worth Spar Co.

Comments on the production information

  • SMALL PRODUCTION OF FELDSPAR FROM SMALL DEPOSIT. SOME LOW QUALITY AND MINOR HIGH QUALITY MICA MINED ESTIMATED BERYL CONTENT 0.34%. PRODUCED FELDSPAR AND MICA CONCENTRATES.

Comments on the reserve resource information

  • SMALL AMOUNTS OF FELDSPAR AND MICA AVAILABLE FROM SMALL DEPOSIT.

Workings at the site

  • Type of workings Unknown
    Overall length 21.34M
    Overall width 12.19M

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    RODGERS, J., 1959, "EXPLANATORY TEXT FOR GEOL. MAP CONN.," CONN. GEOLOGICAL SURVEY, BULL. 84, MAP, TEXT

  • Production

    CAMERON, 1954

  • Deposit

    Cameron, E.N., And Others, 1954, "Pegmatite Invest. 1942-45, New England," Usgs, Pp 255, Pg. 21, 328-329Cameron, E.N., And Others, 1954, "Pegmatite Invest. 1942-45, New England," Usgs, Pp 255, Pg. 21, 328-329

General comments

Subject category Comment text
Deposit USGS Topo, 1961, "Middle Haddam", At 1:24000 Locates Quarry By Symbol. Stugards Map At 1:24000 Locates Quarry, Prospect Pits, and Pegmatite Dikes. Reports In USGS File. Cameron Shows Mine Map. Small Prod. of Feldspar, Columbite - Tantalitebare ; Info.Sr
Deposit USGS TOPO, 1961, "MIDDLE HADDAM", AT 1:24000 LOCATES QUARRY BY SYMBOL. STUGARDS MAP AT 1:24000 LOCATES QUARRY, PROSPECT PITS, AND PEGMATITE DIKES. REPORTS IN USGS FILE. CAMERON SHOWS MINE MAP. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Editor 10-MAR-2003 Nicholson, S.W. U.S. Geological Survey Combined This Record With Information From Record D001838: Then Deleted Record D001838
Reporter 01-APR-1975 Parker, Raymond L. U.S. Geological Survey
Reporter 01-MAY-1972 D'Agostino, John P. U.S. Geological Survey
Updater 21-AUG-1997 Mchone, Nancy Connecticut Geological and Natural History Survey Added Model_Num And Model; Moved Point; Noted Duplicate Record Number D001838

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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