Tallmans Copper Mine
Hamden, Connecticut
41.4446°N 72.8999°W
Mine Overview
The Tallmans Copper Mine is near Hamden, Connecticut. Historically the site has been part of the Cheshire Mining District. The Tallmans Copper Mine was closed at the time of data entry with no known plans to re-open. Past operations took place in the early 1830 to 1835. Production size when active was considered to be small. The ore mined is composed of malachite, chalcocite and barite. Associated rock in this area is diabase from the Holocene epoch 11,784 years ago to present. The New England Upland Section of the Appalachian Highlands characterize the geomorphology of the surrounding area.
Site identification and general characteristics. Learn about USGS mines.
Tallmans Copper Mine Near Hamden, Connecticut
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Commodities
Additional textual information about a site or mine.
- Commodity Type Importance
- Barium-Barite Non-Metallic Primary
- Copper Metallic Primary
- Sulfur Non-Metallic Primary
Deposit
FRITTS GEOLOGIC MAP AT 1:24, 000, LOCATES BY SYMBOLS, 7 MAJOR PROSPECT SITES AND ONE ADIT. TALLMAN MINE ASSAY SAMPLE, USGS LAB FILES, SAMPLE NO. BCT 188 IN HM 3336; INFORMATION SOURCE: 1 PUB LIT.
FRITTS GEOLOGIC MAP AT 1:24, 000, LOCATES BY SYMBOLS, 7 MAJOR PROSPECT SITES AND ONE ADIT. TALLMAN MINE ASSAY SAMPLE, USGS LAB FILES, SAMPLE NO. BCT 188 IN HM 3336; INFORMATION SOURCE: 1 PUB LIT.
Location Info
- New Haven , Connecticut County / State
- Continent Country State County
- North America The United States Connecticut New Haven
Development
TOTAL$: US
Geology
BUTTRESS DIABASE THIN, NEAR VERTICAL, DIKE ROCK THAT CUTS NEAR HORIZONTAL, UPPER TRIASSIC WEST ROCK DIABASE SILL. WEST ROCK DIABASE ABOUT 500 FEET THICK INTRUDES UPPER TRIASSIC NEW HAVEN ARKOSE FORMATION ABOUT 1500 TO 2000 FEET THICK, WHICH.
BUTTRESS DIABASE THIN, NEAR VERTICAL, DIKE ROCK THAT CUTS NEAR HORIZONTAL, UPPER TRIASSIC WEST ROCK DIABASE SILL. WEST ROCK DIABASE ABOUT 500 FEET THICK INTRUDES UPPER TRIASSIC NEW HAVEN ARKOSE FORMATION ABOUT 1500 TO 2000 FEET THICK, WHICH IS UNDERLAIN BY WEPAWAUG SCHIST OF BANDED ARGILLACEOUS, SILICEOUS, AND MINOR PYRITIC CALCAREOUS METASEDIMENTARY ROCKS, SEVERAL THOUSAND FEET THICK, OF SILURIAN AND DEVONIAN AGE, OR OLDER SCHISTS.
Rocks
Geological materials at the site.
Physiography
Physiographic area where the resource is found.
- Division Province? Section
- Appalachian Highlands New England Province New England Upland Section
Reserve-resource
FIGURES LACKING, BUT PROBABLY ONLY MINOR QUANTITIES OF HIGH-GRADE COPPER ORE AVAILABLE.
Nearby Deposits
Other deposits in the same region.
-
Townsend Property
- Copper commodity Site type Occurrence status
- New Haven, Connecticut
- Void Filling And Replacement
- 0.44 miles
-
Cross-Rock Copper Mine
- Copper commodity Site type Mine status
- New Haven, Connecticut
- Void Filling And Replacement
- Surface
- 1.68 miles
-
Gaylord Copper Prospect
- Copper commodity Site type Mine status
- New Haven, Connecticut
- Void Filling And Replacement
- 2.27 miles
-
Jinny Hill Barite Mine
- Barium-Barite commodity Site type Mine status
- New Haven, Connecticut
- Underground
- 2.58 miles
-
Bellamy-Copper Valley Mine
- Copper commodity Site type Mine status
- New Haven, Connecticut
- Void Filling And Replacement
- Surface And Underground
- 3.36 miles
-
Copper Valley Mine
- Copper commodity Site type Mine status
- New Haven, Connecticut
- Underground
- 3.74 miles
-
Cheshire Barytes Company Mine
- Barium-Barite commodity Site type Mine status
- New Haven, Connecticut
- 5.18 miles
-
Unnamed Copper Prospect
- Copper commodity Site type Mine status
- New Haven, Connecticut
- Void Filling And Replacement
- 5.36 miles
-
Golden Parlour Copper Mine
- Copper commodity Site type Mine status
- New Haven, Connecticut
- Surface
- 6.69 miles
-
Unnamed Copper Prospect
- Copper commodity Site type Occurrence status
- New Haven, Connecticut
- Void Filling And Replacement
- 6.84 miles
Nearby Places
- Hamden (3.25 miles away)
- Cheshire (3.63 miles away)
- Wallingford (4.02 miles away)
- North Haven (4.12 miles away)
- Bethany (5.23 miles away)
- Prospect (5.56 miles away)
- Meriden (8.00 miles away)
- Naugatuck (8.19 miles away)
- Beacon Falls (8.35 miles away)
- Woodbridge (8.45 miles away)
- New Haven (9.44 miles away)
- Seymour (9.66 miles away)
- Southington (10.44 miles away)
- North Branford (10.48 miles away)
- Middlefield (10.93 miles away)
- Waterbury (10.95 miles away)
- Oxford (11.18 miles away)
- Ansonia (11.49 miles away)
- Durham (11.56 miles away)
- East Haven (11.62 miles away)
- Wolcott (11.64 miles away)
- Branford (12.09 miles away)
- West Haven (12.17 miles away)
- Middlebury (12.99 miles away)
Nearby Mining Districts
- Cheshire Mining District (0 miles away)
- Woodbridge Mining District (3.79 miles away)
- Meriden Mining District (4.82 miles away)
Footnotes
* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.
** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.
1 World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.
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Notes
SHAFT 50 FOOT DEEP, 1837, ADIT ON LOWER HILL SLOPE 100 FOOT LONG MAY CONNECT TO MAIN SHAFT. PROSPECTS ALONG NORTH-SOUTH STRIKE FOR DISTANCE OF 1000 FEET, AND 200 FEET NORTHWEST OF ADIT OPENING. ORE ZONE AT CONTACT OF DIABASE DIKE AND SANDSTONE. DIKE DIP NEAR.
SHAFT 50 FOOT DEEP, 1837, ADIT ON LOWER HILL SLOPE 100 FOOT LONG MAY CONNECT TO MAIN SHAFT. PROSPECTS ALONG NORTH-SOUTH STRIKE FOR DISTANCE OF 1000 FEET, AND 200 FEET NORTHWEST OF ADIT OPENING. ORE ZONE AT CONTACT OF DIABASE DIKE AND SANDSTONE. DIKE DIP NEAR VERTICAL, SANDSTONE BEDS DIP 5 DEG. EASTERLY. SILVER.