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Simsbury Mines, East Granby, Hartford County, Connecticut, USAi
Regional Level Types
Simsbury MinesGroup of Mines
East GranbyTown
Hartford CountyCounty
ConnecticutState
USACountry

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PhotosMapsSearch
00019980017272046586924.jpg
Modern road sign

New-Gate Copper Mine, Simsbury Mines, East Granby, Hartford County, Connecticut, USA
03433550017272051268819.jpg
Smelter ruins

New-Gate Copper Mine, Simsbury Mines, East Granby, Hartford County, Connecticut, USA
05858240017414553497900.jpg
South-side structures

New-Gate Copper Mine, Simsbury Mines, East Granby, Hartford County, Connecticut, USA
09949350017272051305104.jpg
Modern road sign

New-Gate Copper Mine, Simsbury Mines, East Granby, Hartford County, Connecticut, USA
03433550017272051268819.jpg
Smelter ruins

New-Gate Copper Mine, Simsbury Mines, East Granby, Hartford County, Connecticut, USA
05858240017414553497900.jpg
South-side structures

New-Gate Copper Mine, Simsbury Mines, East Granby, Hartford County, Connecticut, USA
00019980017272046586924.jpg
Modern road sign

New-Gate Copper Mine, Simsbury Mines, East Granby, Hartford County, Connecticut, USA
00129170017272051328718.jpg
Smelter ruins

New-Gate Copper Mine, Simsbury Mines, East Granby, Hartford County, Connecticut, USA
Latitude & Longitude (WGS84):
41° 57' 42'' North , 72° 44' 48'' West
Latitude & Longitude (decimal):
41.96167,-72.74667
GRN:
N28W40
Type:
Group of Mines
Köppen climate type:
Dfa : Hot-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Salmon Brook2,324 (2017)4.1km
Tariffville1,324 (2017)6.0km
North Granby1,944 (2017)7.8km
Suffield Depot1,325 (2017)8.3km
Simsbury Center5,836 (2017)10.4km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Connecticut Valley Mineral ClubSpringfield, Massachusetts20km
Bristol Gem & Mineral ClubBristol, Connecticut36km
Lapidary and Mineral Society of Central ConnecticutMeriden, Connecticut47km
Mindat Locality ID:
23020
Long-form identifier:
mindat:1:2:23020:6
GUID (UUID V4):
0


Originally located in Simsbury. These localities are now in the town of East Granby. Historically, Simsbury included both Granby and the western part of East Granby. East Granby became a separate incorporated town in 1858, formed from the eastern part of Granby, and the western part of Windsor Locks. These mines are the Higley Mine, the Old New-Gate Mine, and the North Hill Mine.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

14 valid minerals.

Detailed Mineral List:

ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
References:
Gray 1982
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
References:
Shepard Collection
ⓘ Coffinite
Formula: U(SiO4) · nH2O
References:
Gray 1982
ⓘ Cuprite
Formula: Cu2O
ⓘ Dolomite
Formula: CaMg(CO3)2
References:
Gray 1982
ⓘ Hematite
Formula: Fe2O3
References:
Gray 1982
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Native Copper ?
Formula: Cu
Description: Tiny grains on sandstone ore with malachite. Photos too blurry to confirm.
References:
Shepard Collection
ⓘ Tyuyamunite
Formula: Ca(UO2)2(VO4)2 · 5-8H2O
References:
Gray 1982
ⓘ Uraninite
Formula: UO2
References:
Gray 1982

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper ?1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘBornite2.BA.15Cu5FeS4
ⓘChalcopyrite2.CB.10aCuFeS2
Group 4 - Oxides and Hydroxides
ⓘCuprite4.AA.10Cu2O
ⓘHematite4.CB.05Fe2O3
ⓘUraninite4.DL.05UO2
ⓘCarnotite4.HB.05K2(UO2)2(VO4)2 · 3H2O
ⓘTyuyamunite4.HB.25Ca(UO2)2(VO4)2 · 5-8H2O
Group 5 - Nitrates and Carbonates
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
ⓘCoffinite9.AD.30U(SiO4) · nH2O
ⓘChrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Hⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hⓘ CoffiniteU(SiO4) · nH2O
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Oⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oⓘ CoffiniteU(SiO4) · nH2O
Oⓘ CupriteCu2O
Oⓘ DolomiteCaMg(CO3)2
Oⓘ HematiteFe2O3
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
Oⓘ UraniniteUO2
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
AlAluminium
Alⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
SiSilicon
Siⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siⓘ CoffiniteU(SiO4) · nH2O
SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
KPotassium
Kⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
CaCalcium
Caⓘ DolomiteCaMg(CO3)2
Caⓘ TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
VVanadium
Vⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Vⓘ TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ HematiteFe2O3
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
Cuⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuⓘ CupriteCu2O
Cuⓘ Native CopperCu
Cuⓘ MalachiteCu2(CO3)(OH)2
UUranium
Uⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Uⓘ CoffiniteU(SiO4) · nH2O
Uⓘ TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
Uⓘ UraniniteUO2

Localities in this Region

USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Dana, Edward Salisbury; Dana, James Dwight (1892) A System of Mineralogy (6th ed.). John Wiley & Sons, Inc.
(2005)
Gray, Norman H. (2005) A1 - The Historic New-Gate and Cobalt Mines of Connecticut, in New England Intercollegiate Geological Conference 97th Annual Meeting September 30, October 1 and 2, 2005. Guidebook for Field Trips in Connecticut. Guidebook 8, State Geological and Natural History Survey of Connecticut. 9-18
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