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East Granby, Hartford Co., Connecticut, USAi
Regional Level Types
East Granby- not defined -
Hartford Co.County
ConnecticutState
USACountry

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Key
Latitude & Longitude (WGS84):
41° North , 72° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~3km


Historically, Simsbury included both Granby and the western part of East Granby (named 1820). East Granby became a separate incorporated town in 1858, formed from the eastern part of Granby, and the western part of Windsor Locks.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana 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

30 valid minerals. 2 erroneous literature entries.

Detailed Mineral List:

'Albertite'
Anhydrite
Formula: CaSO4
Habit: tabular voids
Description: Tabular voids in later crystallized minerals are very common here, as in all Connecticut trap rock quarries. Nearly all anhydrite in the basalt dissolved away leaving these voids.
Reference: Harold Moritz collection
'Apophyllite'
Habit: tabular, in spherical aggregates
Colour: white to creamy
Description: Aggregates of tabular crystals can reach 3 to 4 cm. This habit is characteristic for this locality, other area trap rock quarries have bipyramidal crystals.
Reference: Wolfe, C. W. and Vilks, I. (1960): Pseudomorphs after Datolite, Prehnite and Apophyllite from East Granby, Connecticut. Am. Mineral. 45, 443-447.; Rocks & Minerals (1995) 70:396-409
Aragonite
Formula: CaCO3
Reference: Ryerson, Kathleen, H: Rock Hounds Guide to Connecticut 1972
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: Allan Young's say so
Babingtonite
Formula: Ca2(Fe,Mn)FeSi5O14(OH)
Baryte
Formula: BaSO4
Description: Mistaken identification of calcite crystals twinned on a face of the shallow negative rhombohedron and showing much growth distortion so that they look tabular.
'Bitumen'
Bornite
Formula: Cu5FeS4
Calcite
Formula: CaCO3
Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
Reference: Gray 1982
Celestine
Formula: SrSO4
Habit: tabular
Colour: colorless to very pale blue
Description: Crystals typically small, <1.5 cm.
Reference: John Burnham
Chalcocite
Formula: Cu2S
'Chalcodite'
Formula: K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
Reference: R. Zinderman photo
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 6 localities in this region.
'Chlorite Group'
Reference: Wolfe, C. W. and Vilks, I. (1960): Pseudomorphs after Datolite, Prehnite and Apophyllite from East Granby, Connecticut. Am. Mineral. 45, 443-447.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Coffinite
Formula: U(SiO4) · nH2O
Reference: Gray 1982
Copper
Formula: Cu
Reference: Shepard Collection
Cuprite
Formula: Cu2O
Datolite
Formula: CaB(SiO4)(OH)
Dolomite
Formula: CaMg(CO3)2
Reference: Gray 1982
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Rocks & Min.: 70:398; Rocks & Minerals (1995) 70:396-409
Fluorite
Formula: CaF2
Galena
Formula: PbS
Habit: skeletal cuboctahedral
Colour: gray
Description: A single 12mm skeletal cuboctahedral crystal is known, associated with datolite and yellow calcite.
Reference: Harold Moritz collection
Goethite
Formula: α-Fe3+O(OH)
Reference: Van King
Gypsum
Formula: CaSO4 · 2H2O
Reference: John Burnham;
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
Reference: John Burnham
Hematite
Formula: Fe2O3
Hematite var: Iron Rose
Formula: Fe2O3
Reference: P Cristofono collection
'Julgoldite'
Habit: isolated botryoidal or "bow-tie" radiating crystal aggregates.
Colour: very dark green
Description: Identified by Raman spectroscopy as pumpellyite.
Reference: Harold Moritz collection
Malachite
Formula: Cu2(CO3)(OH)2
Localities: Reported from at least 6 localities in this region.
'Manganese Oxides'
Reference: John Burnham
'Manganese Oxides var: Manganese Dendrites'
Reference: John Burnham
Prehnite
Formula: Ca2Al2Si3O10(OH)2
'Pumpellyite'
Pyrite
Formula: FeS2
Reference: No reference listed
Quartz
Formula: SiO2
Quartz var: Amethyst
Formula: SiO2
Reference: Rocks & Min.: 70:398; Rocks & Minerals (1995) 70:396-409
Quartz var: Milky Quartz
Formula: SiO2
Reference: John Burnham
Quartz var: Smoky Quartz
Formula: SiO2
Sphalerite
Formula: ZnS
Reference: John Burnham
Stilpnomelane
Formula: (K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Tyuyamunite
Formula: Ca(UO2)2(VO4)2 · 5-8H2O
Reference: Gray 1982
Uraninite
Formula: UO2
Reference: Gray 1982

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Carnotite4.HB.05K2(UO2)2(VO4)2 · 3H2O
Cuprite4.AA.10Cu2O
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
var: Iron Rose4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Milky Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Tyuyamunite4.HB.25Ca(UO2)2(VO4)2 · 5-8H2O
Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anhydrite7.AD.30CaSO4
Baryte ?7.AD.35BaSO4
Celestine7.AD.35SrSO4
Gypsum7.CD.40CaSO4 · 2H2O
var: Selenite7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
Babingtonite9.DK.05Ca2(Fe,Mn)FeSi5O14(OH)
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Coffinite9.AD.30U(SiO4) · nH2O
Datolite9.AJ.20CaB(SiO4)(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Stilpnomelane9.EG.40(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Unclassified Minerals, Rocks, etc.
'Albertite'-
'Apophyllite'-
'Bitumen'-
'Chalcodite'-K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
'Chlorite Group'-
'Julgoldite' ?-
'Manganese Oxides'-
'var: Manganese Dendrites'-
'Pumpellyite'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
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
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anhydrite28.3.2.1CaSO4
Baryte ?28.3.1.1BaSO4
Celestine28.3.1.2SrSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Carnotite40.2a.28.1K2(UO2)2(VO4)2 · 3H2O
Tyuyamunite40.2a.26.1Ca(UO2)2(VO4)2 · 5-8H2O
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Coffinite51.5.2.4U(SiO4) · nH2O
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with B in [4] coordination
Datolite54.2.1a.1CaB(SiO4)(OH)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=5
Babingtonite65.4.1.2Ca2(Fe,Mn)FeSi5O14(OH)
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 islands
Stilpnomelane74.1.1.1(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
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
Unclassified Minerals, Mixtures, etc.
'Albertite'-
'Apophyllite'-
Aragonite-CaCO3
'Bitumen'-
'Chalcodite'-K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
'Chlorite Group'-
Gypsum
var: Selenite
-CaSO4 · 2H2O
Hematite
var: Iron Rose
-Fe2O3
'Julgoldite' ?-
'Manganese Oxides'-
'var: Manganese Dendrites'-
'Pumpellyite'-
Quartz
var: Amethyst
-SiO2
var: Milky Quartz-SiO2
var: Smoky Quartz-SiO2

List of minerals for each chemical element

HHydrogen
H DatoliteCaB(SiO4)(OH)
H PrehniteCa2Al2Si3O10(OH)2
H BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
H MalachiteCu2(CO3)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H CarnotiteK2(UO2)2(VO4)2 · 3H2O
H CoffiniteU(SiO4) · nH2O
H TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
H Goethiteα-Fe3+O(OH)
H Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
H GypsumCaSO4 · 2H2O
H Gypsum (var: Selenite)CaSO4 · 2H2O
H AzuriteCu3(CO3)2(OH)2
H ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
BBoron
B DatoliteCaB(SiO4)(OH)
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
C DolomiteCaMg(CO3)2
C AragoniteCaCO3
C AzuriteCu3(CO3)2(OH)2
OOxygen
O DatoliteCaB(SiO4)(OH)
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
O CalciteCaCO3
O BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
O HematiteFe2O3
O MalachiteCu2(CO3)(OH)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Quartz (var: Amethyst)SiO2
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O Quartz (var: Smoky Quartz)SiO2
O CarnotiteK2(UO2)2(VO4)2 · 3H2O
O CoffiniteU(SiO4) · nH2O
O CupriteCu2O
O TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
O UraniniteUO2
O DolomiteCaMg(CO3)2
O Hematite (var: Iron Rose)Fe2O3
O Goethiteα-Fe3+O(OH)
O AragoniteCaCO3
O CelestineSrSO4
O Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
O GypsumCaSO4 · 2H2O
O Gypsum (var: Selenite)CaSO4 · 2H2O
O Quartz (var: Milky Quartz)SiO2
O AnhydriteCaSO4
O AzuriteCu3(CO3)2(OH)2
O ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
O BaryteBaSO4
FFluorine
F FluoriteCaF2
NaSodium
Na Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Mg ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
AlAluminium
Al PrehniteCa2Al2Si3O10(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Al ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
SiSilicon
Si DatoliteCaB(SiO4)(OH)
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
Si BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Quartz (var: Amethyst)SiO2
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si Quartz (var: Smoky Quartz)SiO2
Si CoffiniteU(SiO4) · nH2O
Si Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Si Quartz (var: Milky Quartz)SiO2
Si ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
SSulfur
S ChalcopyriteCuFeS2
S PyriteFeS2
S BorniteCu5FeS4
S ChalcociteCu2S
S CelestineSrSO4
S SphaleriteZnS
S GypsumCaSO4 · 2H2O
S Gypsum (var: Selenite)CaSO4 · 2H2O
S AnhydriteCaSO4
S GalenaPbS
S BaryteBaSO4
KPotassium
K CarnotiteK2(UO2)2(VO4)2 · 3H2O
K Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
K ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
CaCalcium
Ca DatoliteCaB(SiO4)(OH)
Ca PrehniteCa2Al2Si3O10(OH)2
Ca CalciteCaCO3
Ca BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
Ca DolomiteCaMg(CO3)2
Ca AragoniteCaCO3
Ca Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Ca FluoriteCaF2
Ca GypsumCaSO4 · 2H2O
Ca Gypsum (var: Selenite)CaSO4 · 2H2O
Ca AnhydriteCaSO4
VVanadium
V CarnotiteK2(UO2)2(VO4)2 · 3H2O
V TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
MnManganese
Mn BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
FeIron
Fe BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
Fe HematiteFe2O3
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe BorniteCu5FeS4
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Hematite (var: Iron Rose)Fe2O3
Fe Goethiteα-Fe3+O(OH)
Fe Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Fe ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
CuCopper
Cu ChalcopyriteCuFeS2
Cu BorniteCu5FeS4
Cu ChalcociteCu2S
Cu MalachiteCu2(CO3)(OH)2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu CupriteCu2O
Cu CopperCu
Cu AzuriteCu3(CO3)2(OH)2
ZnZinc
Zn SphaleriteZnS
SrStrontium
Sr CelestineSrSO4
BaBarium
Ba BaryteBaSO4
PbLead
Pb GalenaPbS
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


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