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Case Beryl and Feldspar Prospect Quarries

Past Producer in Middlesex county in Connecticut, United States with commodity Feldspar
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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. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10067596
MRDS ID W000384
Record type Site
Current site name Case Beryl and Feldspar Prospect Quarries
Related records 10264478

Geographic coordinates

Geographic coordinates: -72.58152, 41.62499 (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

Comments on the commodity information

  • Quarries Not Shown On Topographic Map. Stugard Locates Three Quarries, the North One, and Two To the South. The Southern Quarries Are 250 Feet and 400 Feet South of the North Pit. Each Quarry Is On A Small Pegmatite Outcrop Less Than 100 Feet In Diame
  • QUARRIES NOT SHOWN ON TOPOGRAPHIC MAP. STUGARD LOCATES THREE QUARRIES, THE NORTH ONE, AND TWO TO THE SOUTH. THE SOUTHERN QUARRIES ARE 250 FEET AND 400 FEET SOUTH OF THE NORTH PIT. EACH QUARRY IS ON A SMALL PEGMATITE OUTCROP LESS THAN 100 FEET IN DIAMETER. REGIONALLY THE DIKES TREND NORTHWARD AND DIP VERTICALLY. CASE NO. 3 MINE IS 60 FEET LONG NE-SW, 5 FEET WIDE NW-SE, AND ABOUT 200 FEET DEEP. OWNER IS MYRON N. CASE. MINED BY WORTH SPAR CO. FROM 1933 TO 1935, MINED IN 1939 BY FRANK BAJOREK. LOOKED AT IN 1942 BY COMPANY.

Materials information

Materials Type of material
Quartz Ore
Feldspar Ore
Feldspar 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) -72.58152, 41.62499
ListMap

Economic information

Ore body information

  • Length 18.29M
    Width 5M
    Depth to bottom 60.96M

Comments on the geologic information

  • Geol.Desc: Small Cluster of Pegmatite Dikes Related To North-Trending Swarms of Pegmatite Dikes Mostly In the Westward Adjacent Younger Middle Ordovician Collins Hill Schist Formation.
  • GEOL.DESC: SMALL CLUSTER OF PEGMATITE DIKES RELATED TO NORTH-TRENDING SWARMS OF PEGMATITE DIKES MOSTLY IN THE WESTWARD ADJACENT YOUNGER MIDDLE ORDOVICIAN COLLINS HILL SCHIST FORMATION.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Production years 1933-1935, 1939, 1942

Mining district

District name Portland

Ownership information

  • Type Operator
    Owner North Spar Co.
    First year 1933
    Last year 1935
  • Type Owner
    Owner Case, Myron N.
  • Type Operator
    Owner Bajorek, Frank
    First year 1939

Comments on the production information

  • SOME FIGURES LACKING BUT PRODUCTION SMALL. ESTIMATE BERYL 0.22%

Comments on the reserve resource information

  • FIGURES LACKING BUT PROBABLY ONLY MODERATE AMOUNT OF FELDSPAR AVAILABLE FROM PEGMATITE CLUSTER.

Comments on development

  • TOTAL$: US

Reference information

Bibliographic references

  • Deposit

    CAMERON E.N., 1954,"PEGMATITE INVEST. 1942-45, NEW ENGLAND," USGS, PP 255, TEXT, PG. 314 TO 316, DRILL LOGS

  • Deposit

    Cameron E.N., 1954,"Pegmatite Invest. 1942-45, New England," Usgs, Pp 255, Text, Pg. 314 To 316, Drill Logs.Cameron E.N., 1954,"Pegmatite Invest. 1942-45, New England," Usgs, Pp 255, Text, Pg. 314 To 316, Drill Logs.

General comments

Subject category Comment text
Deposit Stugard'S Map At 1:24000 Locates Quarry Sites.Brookins' Gives Geochron Dates of About 260 M.Y. For Similar Pegmatite Dikes. Reports In USGS Files. ; Info.Src : 1 Pub Lit
Deposit STUGARD'S MAP AT 1:24000 LOCATES QUARRY SITES.BROOKINS' GIVES GEOCHRON DATES OF ABOUT 260 M.Y. FOR SIMILAR PEGMATITE DIKES. REPORTS IN USGS FILES. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 D'Agostino, John P. U.S. Geological Survey Added Model_Num And Model
Updater 20-AUG-1997 Mchone, Nancy Connecticut Geological and Natural History Survey

Beyond USGS

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

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