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Ore Hill Limonite Mine

Past Producer in Litchfield county in Connecticut, United States with commodities Iron, Manganese
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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. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10105440
MRDS ID W000129
Record type Site
Current site name Ore Hill Limonite Mine
Related records 10289354

Geographic coordinates

Geographic coordinates: -73.47148, 41.95638 (WGS84)

Site location context

Political divisions (FIPS codes)

Litchfield(county)

Connecticut(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sharon(quadrangle 1:24,000 scale)

Waterbury(quadrangle 1:100,000 scale)

Hartford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Housatonic(hydrologic unit)

Connecticut Coastal(hydrologic accounting unit)

Connecticut Coastal(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Connecticut Litchfield

Commodities

Commodity Importance
Iron Primary
Manganese Critical Primary

Comments on the commodity information

  • PIT NAMED "BROOK" PIT; PIT 1,600 FT LONG NE-SW, 1,200 FT WIDE EAST-WEST; ABOUT 80 FT. DEEP, LARGE POND IN CENTER NAMED ORE HILL POND ON TOPO SHEET; UNDERGROUND WORKINGS IN FAULTED BEDROCK OF GRAPHITIC SCHIST AND SIDERITE DOLOMITE.

Materials information

Materials Type of material
Limonite Ore
Schist Ore

Analytical data

Result LIMONITE FE 50.22%, MN 0.62%, CAO TRACE, MGO 0.24, SI02 9.81%, ANKERITE FE 35.42%, P 0.08%.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Stratigraphic age (youngest) Early Ordovician
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite

Nearby scientific data

(1) Everett Schist
ListMap

Economic information

Controls for ore emplacement

  • Probably Mass Weathering Of Siderite Rich Limestone Beds

Comments on the geologic information

  • GEOL.DESC: MASSES OF WHITE SIDERITE ASSOCIATED WITH LIMONITE IN FAULT ZONE NEAR SCHIST CONTACT.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Production years 1807 - 1907

Mining district

District name Northwestern Connecticut

Comments on the production information

  • ESTIMATED ORE PRODUCTION ABOUT 1.6 MILLION TONS. PROBABLY HIGH GRADE ORE MINED OUT.

Comments on the reserve resource information

  • NO FIGURES GIVEN; PROBABLY SOME LOW GRADE ORE REMAINS

Comments on development

  • TOTAL$: US

Reference information

General comments

Subject category Comment text
Deposit USGS TOPO, 1969, "SHARON", 1:24,000, SHOWS POND. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-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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