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Roncari Quarry, East Granby, Hartford County, Connecticut, USAi
Regional Level Types
Roncari QuarryQuarry
East GranbyTown
Hartford CountyCounty
ConnecticutState
USACountry

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Latitude & Longitude (WGS84):
41° 56' 16'' North , 72° 44' 21'' West
Latitude & Longitude (decimal):
41.93778,-72.73944
GeoHash:
G#: drkq8f8c2
GRN:
N28W40
Type:
Quarry
KΓΆppen climate type:
Dfa : Hot-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Tariffville1,324 (2017)3.7km
Salmon Brook2,324 (2017)5.1km
Simsbury Center5,836 (2017)8.7km
Suffield Depot1,325 (2017)8.8km
Windsor Locks12,498 (2017)9.3km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Connecticut Valley Mineral ClubSpringfield, Massachusetts22km
Bristol Gem & Mineral ClubBristol, Connecticut34km
Lapidary and Mineral Society of Central ConnecticutMeriden, Connecticut45km
Mindat Locality ID:
6767
Long-form identifier:
mindat:1:2:6767:9
GUID (UUID V4):
d207ae75-3f0f-4535-9aae-fd8e86d736ce
Other/historical names associated with this locality:
Tilcon Quarry


Quarry in the Jurassic (205 mya) Holyoke Basalt. Mineralization occurs in gas vesicles (pockets) and in fault zones, some of them heavily brecciated and recemented with fine-grained calcite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


21 valid minerals. 2 erroneous literature entries.

* - Minerals that have never been found, but their existence is inferred in some way (e.g. from pseudomorphs)

Detailed Mineral List:

β“˜ 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.
βœͺ 'Apophyllite Group'
Formula: AB4[Si8O22]X · 8H2O
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.
β“˜ Aragonite
Formula: CaCO3
βœͺ Babingtonite
Formula: Ca2(Fe,Mn)FeSi5O14(OH)
Habit: blocky to wedge-shaped
Colour: black
Description: Crystals to a little over 1 cm, surfaces are mix of smooth and lustrous to rough textures. Commonly associated with prehnite, calcite and quartz.
β“˜ 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.
βœͺ Calcite
Formula: CaCO3
Habit: rhombohedral, scalenohedral, tabular butterfly twins on {01bar12}
Colour: white, pale rose
Fluorescence: orange-red
Description: A variety of forms and sizes occur, most commonly rhombohedral and scalenohedral, with rhombic overgrowths up to 4 cm on scalenohedral cores showing a pale rose color and frosty luster associated with sprays of needle quartz epimorphic on dissolved anhydrite. Tabular butterfly twins to 5mm or so also occur.
β“˜ Celestine
Formula: SrSO4
Habit: tabular
Colour: colorless to very pale blue
Description: Crystals typically small, <1.5 cm.
References:
John Burnham
β“˜ 'Chalcodite'
Formula: K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
References:
R. Zinderman photo
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ 'Chlorite Group'
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
βœͺ Datolite
Formula: CaB(SiO4)(OH)
Habit: complex prisms with chisel-point terminations
Colour: pale apple green
Description: Gas vesicles rich in crystals lining the walls were once abundant. Never found singly. Crystals can reach over 2.5 cm, larger ones typically transparent, smaller crystals translucent to opaque - grading to porcelaineous crusts. Excellent specimens in major museums.
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
βœͺ Fluorapophyllite-(K)
Formula: KCa4(Si8O20)(F,OH) · 8H2O
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 mostly bipyramidal crystals.
β“˜ Fluorite
Formula: CaF2
References:
John Burnham
β“˜ Galena
Formula: PbS
Habit: skeletal cuboctahedral
Colour: gray
Description: A single 12mm skeletal cuboctahedral crystal is known, associated with datolite and yellow calcite.
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Gypsum
Formula: CaSO4 · 2H2O
References:
John Burnham
β“˜ Gypsum var. Selenite
Formula: CaSO4 · 2H2O
References:
John Burnham
βœͺ Hematite
Formula: Fe2O3
Habit: coatings, botryoidal aggregates, rosettes
Colour: specular to rusty-red
Description: Mostly as rusty-red coatings on calcite and quartz, tiny blebs or as specular to rusty-red rosettes to several mm.
β“˜ Hematite var. Iron Rose
Formula: Fe2O3
β“˜ 'Julgoldite Subgroup'
Formula: Ca2XFe3+2[Si2O6(OH)][SiO4](OH)2A
Habit: isolated botryoidal or "bow-tie" radiating crystal aggregates.
Colour: very dark green
Description: Identified by Raman spectroscopy as pumpellyite.
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
Habit: massive to acicular
Colour: green
Description: Associated with chrysocolla.
β“˜ 'Manganese Oxides'
References:
John Burnham
β“˜ 'Manganese Oxides var. Manganese Dendrites'
References:
John Burnham
β“˜ 'Petroleum var. Albertite'
References:
John Burnham
β“˜ 'Petroleum var. Bitumen'
Habit: amorphous
Colour: black
Description: Brittle, glassy, conchoidal fracture with sharp edges. Found in faults and pockets. Dessicated residue from the upward migration of crude oil from stratigraphically lower, petroleum-rich black shales in the Shuttle Meadow Formation.
βœͺ Prehnite
Formula: Ca2Al2Si3O10(OH)2
Habit: Botryoidal to conical aggregates of tabular crystals
Colour: various shades of green
βœͺ 'Pumpellyite Group'
Formula: Ca2XZ2[Si2O6(OH)][SiO4](OH)2A
Habit: microfibrous botryoids, crusts, bowties
Colour: blue-green, dark olive green to black
Description: Few specimens have been confirmed by analyses to differentiate it from several other possible pumpellyite group minerals.
β“˜ 'Pumpellyite Subgroup'
Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
Habit: isolated botryoidal or "bow-tie" radiating crystal aggregates.
Colour: very dark green
Description: As late-forming micro-crystal aggregates in pockets. Thought to be julgoldite but identified as pumpellyite using Raman spectroscopy by Paul Bartholomew, U. of New Haven, 2014.
β“˜ Pyrite
Formula: FeS2
βœͺ Quartz
Formula: SiO2
Habit: elongated prismatic, Cumberland habit
Colour: colorless, milky, smoky
Description: Typically associated with calcite, datolite or prehnite, crystals range from tiny ones epimorphing dissolved anhydrite (forming sparkling columns to a several cm long) to prismatic ones to 15 cm. Cumberland habit crystals typcially up to 1-2 cm found in groups or singly.
β“˜ Quartz var. Amethyst
Formula: SiO2
β“˜ Quartz var. Milky Quartz
Formula: SiO2
References:
John Burnham
β“˜ Quartz var. Smoky Quartz
Formula: SiO2
β“˜ Sphalerite
Formula: ZnS
References:
John Burnham
β“˜ 'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
β“˜ Stilpnomelane
Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
References:
John Burnham

Gallery:

AB4[Si8O22]X · 8H2Oβ“˜ 'Apophyllite Group'
Ca2(Fe,Mn)FeSi5O14(OH)β“˜ Babingtonite
CaCO3β“˜ Calcite
SrSO4β“˜ Celestine
K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27β“˜ 'Chalcodite'
CuFeS2β“˜ Chalcopyrite
β“˜ 'Chlorite Group'
Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1β“˜ Chrysocolla
CaB(SiO4)(OH)β“˜ Datolite
(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)β“˜ Epidote
KCa4(Si8O20)(F,OH) · 8H2Oβ“˜ Fluorapophyllite-(K)
CaF2β“˜ Fluorite
PbSβ“˜ Galena
CaSO4 · 2H2Oβ“˜ Gypsum var. Selenite
Fe2O3β“˜ Hematite
Fe2O3β“˜ Hematite var. Iron Rose
Ca2Al2Si3O10(OH)2β“˜ Prehnite
Ca2XZ2[Si2O6(OH)][SiO4](OH)2Aβ“˜ 'Pumpellyite Group'
SiO2β“˜ Quartz
SiO2β“˜ Quartz var. Amethyst
SiO2β“˜ Quartz var. Smoky Quartz
ZnSβ“˜ Sphalerite
(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2Oβ“˜ Stilpnomelane

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Sphalerite2.CB.05aZnS
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Galena2.CD.10PbS
β“˜Pyrite2.EB.05aFeS2
Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Hematite
var. Iron Rose		4.CB.05Fe2O3
β“˜4.CB.05Fe2O3
β“˜Quartz
var. Amethyst		4.DA.05SiO2
β“˜var. Milky Quartz4.DA.05SiO2
β“˜var. Smoky Quartz4.DA.05SiO2
β“˜4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Aragonite5.AB.15CaCO3
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Anhydrite ?7.AD.30CaSO4
β“˜Celestine7.AD.35SrSO4
β“˜Baryte ?7.AD.35BaSO4
β“˜Gypsum7.CD.40CaSO4 Β· 2H2O
β“˜var. Selenite7.CD.40CaSO4 Β· 2H2O
Group 9 - Silicates
β“˜Datolite9.AJ.20CaB(SiO4)(OH)
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Babingtonite9.DK.05Ca2(Fe,Mn)FeSi5O14(OH)
β“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
β“˜Fluorapophyllite-(K)9.EA.15KCa4(Si8O20)(F,OH) Β· 8H2O
β“˜Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1
β“˜'Chalcodite'9.EG.40K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
β“˜Stilpnomelane9.EG.40(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 Β· nH2O
Unclassified
β“˜'Manganese Oxides'-
β“˜'Pumpellyite Group'-Ca2XZ2[Si2O6(OH)][SiO4](OH)2A
β“˜'Apophyllite Group'-AB4[Si8O22]X Β· 8H2O
β“˜'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] Β· nH2O
β“˜'Manganese Oxides
var. Manganese Dendrites'		-
β“˜'Petroleum
var. Albertite'		-
β“˜'var. Bitumen'-
β“˜'Chlorite Group'-
β“˜'Pumpellyite Subgroup'-Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
β“˜'Julgoldite Subgroup' ?-Ca2XFe3+2[Si2O6(OH)][SiO4](OH)2A

List of minerals for each chemical element

HHydrogen
Hβ“˜ Apophyllite GroupAB4[Si8O22]X · 8H2O
Hβ“˜ BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
Hβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hβ“˜ DatoliteCaB(SiO4)(OH)
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ GypsumCaSO4 · 2H2O
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ PrehniteCa2Al2Si3O10(OH)2
Hβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Hβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Hβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Hβ“˜ Gypsum var. SeleniteCaSO4 · 2H2O
Hβ“˜ Pumpellyite GroupCa2XZ2[Si2O6(OH)][SiO4](OH)2A
Hβ“˜ ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
Hβ“˜ Julgoldite SubgroupCa2XFe23+[Si2O6(OH)][SiO4](OH)2A
BBoron
Bβ“˜ DatoliteCaB(SiO4)(OH)
CCarbon
Cβ“˜ AragoniteCaCO3
Cβ“˜ CalciteCaCO3
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ Quartz var. AmethystSiO2
Oβ“˜ AnhydriteCaSO4
Oβ“˜ Apophyllite GroupAB4[Si8O22]X · 8H2O
Oβ“˜ AragoniteCaCO3
Oβ“˜ BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
Oβ“˜ BaryteBaSO4
Oβ“˜ CalciteCaCO3
Oβ“˜ CelestineSrSO4
Oβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oβ“˜ DatoliteCaB(SiO4)(OH)
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ GypsumCaSO4 · 2H2O
Oβ“˜ HematiteFe2O3
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ PrehniteCa2Al2Si3O10(OH)2
Oβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Oβ“˜ QuartzSiO2
Oβ“˜ Quartz var. Smoky QuartzSiO2
Oβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Oβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Oβ“˜ Gypsum var. SeleniteCaSO4 · 2H2O
Oβ“˜ Quartz var. Milky QuartzSiO2
Oβ“˜ Hematite var. Iron RoseFe2O3
Oβ“˜ Pumpellyite GroupCa2XZ2[Si2O6(OH)][SiO4](OH)2A
Oβ“˜ ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
Oβ“˜ Julgoldite SubgroupCa2XFe23+[Si2O6(OH)][SiO4](OH)2A
FFluorine
Fβ“˜ Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Fβ“˜ FluoriteCaF2
NaSodium
Naβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
MgMagnesium
Mgβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Mgβ“˜ ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
AlAluminium
Alβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ PrehniteCa2Al2Si3O10(OH)2
Alβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Alβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Alβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Alβ“˜ ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
SiSilicon
Siβ“˜ Quartz var. AmethystSiO2
Siβ“˜ Apophyllite GroupAB4[Si8O22]X · 8H2O
Siβ“˜ BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
Siβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siβ“˜ DatoliteCaB(SiO4)(OH)
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Siβ“˜ PrehniteCa2Al2Si3O10(OH)2
Siβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Siβ“˜ QuartzSiO2
Siβ“˜ Quartz var. Smoky QuartzSiO2
Siβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Siβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Siβ“˜ Quartz var. Milky QuartzSiO2
Siβ“˜ Pumpellyite GroupCa2XZ2[Si2O6(OH)][SiO4](OH)2A
Siβ“˜ ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
Siβ“˜ Julgoldite SubgroupCa2XFe23+[Si2O6(OH)][SiO4](OH)2A
SSulfur
Sβ“˜ AnhydriteCaSO4
Sβ“˜ BaryteBaSO4
Sβ“˜ CelestineSrSO4
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ GalenaPbS
Sβ“˜ GypsumCaSO4 · 2H2O
Sβ“˜ PyriteFeS2
Sβ“˜ SphaleriteZnS
Sβ“˜ Gypsum var. SeleniteCaSO4 · 2H2O
KPotassium
Kβ“˜ Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Kβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Kβ“˜ ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
CaCalcium
Caβ“˜ AnhydriteCaSO4
Caβ“˜ AragoniteCaCO3
Caβ“˜ BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
Caβ“˜ CalciteCaCO3
Caβ“˜ DatoliteCaB(SiO4)(OH)
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
Caβ“˜ FluoriteCaF2
Caβ“˜ GypsumCaSO4 · 2H2O
Caβ“˜ PrehniteCa2Al2Si3O10(OH)2
Caβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Caβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Caβ“˜ Gypsum var. SeleniteCaSO4 · 2H2O
Caβ“˜ Pumpellyite GroupCa2XZ2[Si2O6(OH)][SiO4](OH)2A
Caβ“˜ Julgoldite SubgroupCa2XFe23+[Si2O6(OH)][SiO4](OH)2A
MnManganese
Mnβ“˜ BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
FeIron
Feβ“˜ BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ PyriteFeS2
Feβ“˜ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Feβ“˜ Hematite var. Iron RoseFe2O3
Feβ“˜ ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27
Feβ“˜ Julgoldite SubgroupCa2XFe23+[Si2O6(OH)][SiO4](OH)2A
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuβ“˜ MalachiteCu2(CO3)(OH)2
ZnZinc
Znβ“˜ SphaleriteZnS
SrStrontium
Srβ“˜ CelestineSrSO4
BaBarium
Baβ“˜ BaryteBaSO4
PbLead
Pbβ“˜ GalenaPbS

Mindat Articles

"Barf" Datolite by Paul Gilmore


Other Regions, Features and Areas containing this locality

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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

Wolfe, C. W. and Vilks, I. (1960): Pseudomorphs after Datolite, Prehnite and Apophyllite from East Granby, Connecticut. American Mineralogist: 45: 443-447.
Ryerson, Kathleen, H. (1972): Rock Hound's Guide to Connecticut. Pequot Press.
Hubert, John F., Paul E. Feshbach-Meriney and Michael A. Smith. (1992). The Triassic-Jurassic Hartford Rift Basin, Connecticut and Massachusetts: Evolution, Sandstone Diagenesis, and Hydrocarbon History. AAPG Bulletin: 76(11).
Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 398.
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