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East Haven, New Haven Co., Connecticut, USAi
Regional Level Types
East Haven- not defined -
New Haven Co.County
ConnecticutState
USACountry

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Key
Latitude & Longitude (WGS84):
41° 16' 38'' North , 72° 52' 22'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
East Haven29,257 (2017)0.4km
Branford Center5,819 (2017)4.8km
Branford29,438 (2017)4.8km
New Haven130,322 (2017)5.8km
West Haven54,927 (2017)6.2km


The bedrock geology of East Haven is dominated by arkosic sandstone of the New Haven arkose, intruded by diabase of the Fair Haven dike swarm, and basalt of the Talcott lava flow. A heavily-developed town, there were numerous small trap rock quarries (most notably the now developed Cinque Quarry) and road cuts that exposed the diabase and basalt, which host essentially all the minerals listed below.

Coordinates are for the Town Hall.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

19 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State
Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Tschernich, R. (1992): Zeolites of the World, 65; Samuel Robinson (1825) A Catalogue of American Minerals, with their localities. Boston
Anhydrite
Formula: CaSO4
Aragonite
Formula: CaCO3
Baryte
Formula: BaSO4
Bornite
Formula: Cu5FeS4
Reference: J Zolan Collection
Calcite
Formula: CaCO3
Chalcopyrite
Formula: CuFeS2
Habit: anhedral
Colour: brassy with iridescence
Description: tiny irregular grains
Reference: Januzzi and Seaman (1976): Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut.
'Chlorite Group'
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: J Zolan Collection
Dolomite
Formula: CaMg(CO3)2
Dolomite var: Ferroan Dolomite
Formula: Ca(Mg,Fe)(CO3)2
Reference: J Zolan Collection
Goethite
Formula: α-Fe3+O(OH)
Gypsum ?
Formula: CaSO4 · 2H2O
Habit: powder
Colour: white to pink
Description: Powdery alteration of anhydrite, unconfirmed.
Reference: Powell, Richard C. and Wolfgang Vogt. (1987), Cinque Quarry, A Suburban Site in Connecticut Makes Collecting a Cinch. Rock and Gem: (6): 36-39.
Hematite
Formula: Fe2O3
Malachite
Formula: Cu2(CO3)(OH)2
Reference: J Zolan Collection
Marcasite
Formula: FeS2
Habit: radiating
Description: a thin radiating structure, much like a pyrite sun, along a crack in the basalt
Reference: Powell, Richard C. and Wolfgang Vogt. (1987), Cinque Quarry, A Suburban Site in Connecticut Makes Collecting a Cinch. Rock and Gem: (6): 36-39.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Tschernich, R. (1992): Zeolites of the World, 65
'Pumpellyite'
Reference: Tschernich, R. (1992): Zeolites of the World, 65
Pyrite
Formula: FeS2
Habit: microscopic pyritohedrons and cubes
Description: Typically perched on calcite or goethite, rather than quartz. Crystals include "right angle" crystals.
Reference: Henderson, William, A. Jr. and Carl A. Francis. (1989), On Right Angle Bends in Filiform Pyrite. Mineralogical Record: 20(6): 463.; Powell, Richard C. and Wolfgang Vogt. (1987), Cinque Quarry, A Suburban Site in Connecticut Makes Collecting a Cinch. Rock and Gem: (6): 36-39.
Quartz
Formula: SiO2
Quartz var: Agate
Reference: Samuel Robinson (1825) A Catalogue of American Minerals, with their localities. Boston
Quartz var: Amethyst
Formula: SiO2
Quartz var: Carnelian
Reference: Samuel Robinson (1825) A Catalogue of American Minerals, with their localities. Boston
Quartz var: Chalcedony
Formula: SiO2
Reference: Samuel Robinson (1825) A Catalogue of American Minerals, with their localities. Boston
Quartz var: Citrine
Formula: SiO2
Reference: Samuel Robinson (1825) A Catalogue of American Minerals, with their localities. Boston
Quartz var: Jasper
Reference: Samuel Robinson (1825) A Catalogue of American Minerals, with their localities. Boston
Quartz var: Smoky Quartz
Formula: SiO2
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Reference: Connecticut Minerals: Their Properties and Occurrence, Bulletin No. 77, A revision of Bulletin No. 51, 1931, State Geological and Natural Survey, Hartford, Connecticut, 1951, pp. 67-68.)
'Stilbite subgroup'
Reference: Tschernich, R. (1992): Zeolites of the World, 65
Talc
Formula: Mg3Si4O10(OH)2
Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Agate4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Carnelian4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
var: Citrine4.DA.05SiO2
var: Jasper4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
var: Ferroan Dolomite5.AB.10Ca(Mg,Fe)(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anhydrite7.AD.30CaSO4
Baryte7.AD.35BaSO4
Gypsum ?7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Analcime9.GB.05Na(AlSi2O6) · H2O
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Pumpellyite'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'Stilbite subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anhydrite28.3.2.1CaSO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum ?29.6.3.1CaSO4 · 2H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Talc71.2.1.3Mg3Si4O10(OH)2
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Unclassified Minerals, Mixtures, etc.
Aragonite-CaCO3
'Chlorite Group'-
Dolomite
var: Ferroan Dolomite
-Ca(Mg,Fe)(CO3)2
'Pumpellyite'-
Quartz
var: Agate
-SiO2
var: Amethyst-SiO2
var: Carnelian-SiO2
var: Chalcedony-SiO2
var: Citrine-SiO2
var: Jasper-SiO2
var: Smoky Quartz-SiO2
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'Stilbite subgroup'-

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H PrehniteCa2Al2Si3O10(OH)2
H TalcMg3Si4O10(OH)2
H AnalcimeNa(AlSi2O6) · H2O
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
H MalachiteCu2(CO3)(OH)2
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H GypsumCaSO4 · 2H2O
CCarbon
C CalciteCaCO3
C AragoniteCaCO3
C MalachiteCu2(CO3)(OH)2
C Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
C DolomiteCaMg(CO3)2
OOxygen
O QuartzSiO2
O Quartz (var: Smoky Quartz)SiO2
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O CalciteCaCO3
O Quartz (var: Amethyst)SiO2
O PrehniteCa2Al2Si3O10(OH)2
O AlbiteNa(AlSi3O8)
O TalcMg3Si4O10(OH)2
O AnalcimeNa(AlSi2O6) · H2O
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
O BaryteBaSO4
O AragoniteCaCO3
O Quartz (var: Chalcedony)SiO2
O Quartz (var: Citrine)SiO2
O MalachiteCu2(CO3)(OH)2
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
O AnhydriteCaSO4
O DolomiteCaMg(CO3)2
O GypsumCaSO4 · 2H2O
NaSodium
Na AlbiteNa(AlSi3O8)
Na AnalcimeNa(AlSi2O6) · H2O
MgMagnesium
Mg TalcMg3Si4O10(OH)2
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mg Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
Mg DolomiteCaMg(CO3)2
AlAluminium
Al PrehniteCa2Al2Si3O10(OH)2
Al AlbiteNa(AlSi3O8)
Al AnalcimeNa(AlSi2O6) · H2O
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si QuartzSiO2
Si Quartz (var: Smoky Quartz)SiO2
Si Quartz (var: Amethyst)SiO2
Si PrehniteCa2Al2Si3O10(OH)2
Si AlbiteNa(AlSi3O8)
Si TalcMg3Si4O10(OH)2
Si AnalcimeNa(AlSi2O6) · H2O
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Si Quartz (var: Chalcedony)SiO2
Si Quartz (var: Citrine)SiO2
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SSulfur
S PyriteFeS2
S MarcasiteFeS2
S BaryteBaSO4
S BorniteCu5FeS4
S AnhydriteCaSO4
S ChalcopyriteCuFeS2
S GypsumCaSO4 · 2H2O
CaCalcium
Ca CalciteCaCO3
Ca PrehniteCa2Al2Si3O10(OH)2
Ca AragoniteCaCO3
Ca Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
Ca AnhydriteCaSO4
Ca DolomiteCaMg(CO3)2
Ca GypsumCaSO4 · 2H2O
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe PyriteFeS2
Fe MarcasiteFeS2
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Fe BorniteCu5FeS4
Fe Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
Fe ChalcopyriteCuFeS2
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu MalachiteCu2(CO3)(OH)2
Cu BorniteCu5FeS4
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu ChalcopyriteCuFeS2
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
BaBarium
Ba BaryteBaSO4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Tschernich, R. (1992): Zeolites of the World, 65

Localities in this Region

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