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Barrett Brothers Quarry (D and J Quarry), Beacon Falls, New Haven County, Connecticut, USAi
Regional Level Types
Barrett Brothers Quarry (D and J Quarry)Quarry
Beacon Falls- not defined -
New Haven CountyCounty
ConnecticutState
USACountry

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Latitude & Longitude (WGS84):
41° 25' 4'' North , 73° 4' 26'' West
Latitude & Longitude (decimal):
41.41778,-73.07389
GeoHash:
G#: drk595vhn
GRN:
N28W40
Type:
Quarry
KΓΆppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Seymour16,562 (2017)2.3km
Oxford11,345 (2017)4.0km
Naugatuck31,538 (2017)7.8km
Ansonia18,854 (2017)8.0km
Woodbridge9,355 (2017)9.1km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
New Haven Mineral ClubNew Haven, Connecticut17km
Lapidary and Mineral Society of Central ConnecticutMeriden, Connecticut26km
Bristol Gem & Mineral ClubBristol, Connecticut30km
Danbury Mineralogical SocietyDanbury, Connecticut32km
Mindat Locality ID:
134390
Long-form identifier:
mindat:1:2:134390:1
GUID (UUID V4):
9259f29c-c48d-49e3-b006-626ec619d94e


Superb specimens of quartz with zeolites and adularia in alpine clefts through a gneissic or schistose rock were recovered in the left portion of the quarry.

Some of the quartz crystals exhibit Dauphine twinning.

A variety of copper minerals occur at this medium-sized quarry. The copper minerals occur in schist and as grains in calcite marble. Primary metallic minerals are chalcopyrite, arsenopyrite, chalcocite, and questionable covellite. Secondary minerals are abundant on schist facies; brochantite is the most common secondary (pseudomalachite is questionable). On marble malachite and chrysocolla are obvious, from altered chalcopyrite grains. Allophane and arsenic were erroneously reported.

2/26/2007 -Linarite and brochantite were identified on samples collected at the mine.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


31 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“˜ Albite
Formula: Na(AlSi3O8)
β“˜ Allophane
Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O
β“˜ Almandine
Formula: Fe2+3Al2(SiO4)3
β“˜ Analcime
Formula: Na(AlSi2O6) · H2O
β“˜ Anglesite
Formula: PbSO4
β“˜ Anhydrite
Formula: CaSO4
Habit: tabular prisms
Description: Present only as tabular molds cross-cutting quartz crystals, early forming crystals naturally dissolved away later.
β“˜ Arsenic
Formula: As
β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Beryl
Formula: Be3Al2(Si6O18)
β“˜ Brochantite
Formula: Cu4(SO4)(OH)6
β“˜ Calcite
Formula: CaCO3
β“˜ Cerussite
Formula: PbCO3
β“˜ Chalcanthite
Formula: CuSO4 · 5H2O
β“˜ Chalcocite
Formula: Cu2S
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ 'Chlorite Group'
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Habit: crusts
Colour: pale blue
Description: blue crusts associated with malachite and chalcopyrite grains in marble
β“˜ Chrysotile ?
Formula: Mg3(Si2O5)(OH)4
β“˜ Covellite ?
Formula: CuS
β“˜ Cuprite
Formula: Cu2O
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ Gypsum
Formula: CaSO4 · 2H2O
β“˜ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
β“˜ 'K Feldspar'
Habit: wedge-shaped prisms
Colour: white
Description: Micro crystals to 5 mm or so in cavities with quartz and chlorite.
β“˜ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
Habit: wedge-shaped prisms
Colour: white
Description: Micro crystals to 5 mm or so in cavities with quartz and chlorite.
β“˜ Kyanite
Formula: Al2(SiO4)O
Description: Identified by Mike Polletta at the locality. 2010
β“˜ 'Limonite'
β“˜ Linarite
Formula: PbCu(SO4)(OH)2
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
Description: Encrusting over mica schist. Visually identified and confirmed at a CT museum.
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Pseudomalachite ?
Formula: Cu5(PO4)2(OH)4
β“˜ Pyrite
Formula: FeS2
βœͺ Quartz
Formula: SiO2
Habit: subparallel prismatic aggregates
Colour: milky
Description: Crystals in alpine clefts can reach a few inches. Hundreds of samples came from an approximately 1 meter cavity.
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: elongated prisms
Colour: black
Description: Subhedral crystals to 32mm in small pegmatites.
β“˜ Staurolite
Formula: Fe2+2Al9Si4O23(OH)
βœͺ Stilbite-Ca
Formula: NaCa4(Si27Al9)O72 · 28H2O
Habit: tabular
Colour: white to gray
Description: One sample (www.mindat.org/photo-459230.html) analyzed by SEM-EDS and almost certainly stilbite-Ca.
β“˜ 'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
Habit: tabular prisms
Colour: white to pale gray
Description: Drusy microcrystals in alpine clefts with quartz, adularia, chlorite.
β“˜ Titanite
Formula: CaTi(SiO4)O
Description: (micro, in matrix of quartz-adularia specimen)
β“˜ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
Habit: elongated prisms
Colour: very pale green
Description: subhedral elongate grains in marble

Gallery:

KAlSi3O8β“˜ 'K Feldspar var. Adularia'
SiO2β“˜ Quartz
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)β“˜ Schorl
M6-7[Al8-9Si27-28O72] · nH2Oβ“˜ 'Stilbite Subgroup'

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Arsenic ?1.CA.05As
Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Covellite ?2.CA.05aCuS
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Pyrite2.EB.05aFeS2
β“˜Arsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
β“˜Cuprite4.AA.10Cu2O
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Cerussite5.AB.15PbCO3
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Anhydrite ?7.AD.30CaSO4
β“˜Anglesite7.AD.35PbSO4
β“˜Brochantite7.BB.25Cu4(SO4)(OH)6
β“˜Linarite7.BC.65PbCu(SO4)(OH)2
β“˜Chalcanthite7.CB.20CuSO4 Β· 5H2O
β“˜Gypsum7.CD.40CaSO4 Β· 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Pseudomalachite ?8.BD.05Cu5(PO4)2(OH)4
Group 9 - Silicates
β“˜Chrysotile ?9..Mg3(Si2O5)(OH)4
β“˜Almandine9.AD.25Fe2+3Al2(SiO4)3
β“˜Kyanite9.AF.15Al2(SiO4)O
β“˜Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Beryl9.CJ.05Be3Al2(Si6O18)
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Tremolite9.DE.10β—»Ca2Mg5(Si8O22)(OH)2
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1
β“˜Allophane ?9.ED.20(Al2O3)(SiO2)1.3-2 Β· 2.5-3H2O
β“˜Albite9.FA.35Na(AlSi3O8)
β“˜Analcime9.GB.05Na(AlSi2O6) Β· H2O
β“˜Stilbite-Ca9.GE.10NaCa4(Si27Al9)O72 Β· 28H2O
Unclassified
β“˜'Hornblende Root Name Group'-β—»Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
β“˜'K Feldspar
var. Adularia'		-KAlSi3O8
β“˜'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] Β· nH2O
β“˜'Limonite'-
β“˜'Chlorite Group'-
β“˜'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Hβ“˜ AnalcimeNa(AlSi2O6) · H2O
Hβ“˜ BrochantiteCu4(SO4)(OH)6
Hβ“˜ ChalcanthiteCuSO4 · 5H2O
Hβ“˜ ChrysotileMg3(Si2O5)(OH)4
Hβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ GypsumCaSO4 · 2H2O
Hβ“˜ LinaritePbCu(SO4)(OH)2
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ PseudomalachiteCu5(PO4)2(OH)4
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hβ“˜ StauroliteFe22+Al9Si4O23(OH)
Hβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Hβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Hβ“˜ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Hβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
BeBeryllium
Beβ“˜ BerylBe3Al2(Si6O18)
BBoron
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ CerussitePbCO3
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ K Feldspar var. AdulariaKAlSi3O8
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Oβ“˜ AnalcimeNa(AlSi2O6) · H2O
Oβ“˜ AnglesitePbSO4
Oβ“˜ AnhydriteCaSO4
Oβ“˜ AlmandineFe32+Al2(SiO4)3
Oβ“˜ BrochantiteCu4(SO4)(OH)6
Oβ“˜ BerylBe3Al2(Si6O18)
Oβ“˜ CalciteCaCO3
Oβ“˜ CerussitePbCO3
Oβ“˜ ChalcanthiteCuSO4 · 5H2O
Oβ“˜ ChrysotileMg3(Si2O5)(OH)4
Oβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oβ“˜ CupriteCu2O
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ GypsumCaSO4 · 2H2O
Oβ“˜ KyaniteAl2(SiO4)O
Oβ“˜ LinaritePbCu(SO4)(OH)2
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ PseudomalachiteCu5(PO4)2(OH)4
Oβ“˜ QuartzSiO2
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ StauroliteFe22+Al9Si4O23(OH)
Oβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oβ“˜ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Oβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
FFluorine
Fβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ AnalcimeNa(AlSi2O6) · H2O
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Naβ“˜ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
MgMagnesium
Mgβ“˜ ChrysotileMg3(Si2O5)(OH)4
Mgβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
AlAluminium
Alβ“˜ K Feldspar var. AdulariaKAlSi3O8
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Alβ“˜ AnalcimeNa(AlSi2O6) · H2O
Alβ“˜ AlmandineFe32+Al2(SiO4)3
Alβ“˜ BerylBe3Al2(Si6O18)
Alβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ KyaniteAl2(SiO4)O
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alβ“˜ StauroliteFe22+Al9Si4O23(OH)
Alβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Alβ“˜ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Alβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siβ“˜ K Feldspar var. AdulariaKAlSi3O8
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Siβ“˜ AnalcimeNa(AlSi2O6) · H2O
Siβ“˜ AlmandineFe32+Al2(SiO4)3
Siβ“˜ BerylBe3Al2(Si6O18)
Siβ“˜ ChrysotileMg3(Si2O5)(OH)4
Siβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ KyaniteAl2(SiO4)O
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ StauroliteFe22+Al9Si4O23(OH)
Siβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siβ“˜ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Siβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
PPhosphorus
Pβ“˜ PseudomalachiteCu5(PO4)2(OH)4
SSulfur
Sβ“˜ AnglesitePbSO4
Sβ“˜ AnhydriteCaSO4
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BrochantiteCu4(SO4)(OH)6
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChalcanthiteCuSO4 · 5H2O
Sβ“˜ ChalcociteCu2S
Sβ“˜ CovelliteCuS
Sβ“˜ GypsumCaSO4 · 2H2O
Sβ“˜ LinaritePbCu(SO4)(OH)2
Sβ“˜ PyriteFeS2
ClChlorine
Clβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
KPotassium
Kβ“˜ K Feldspar var. AdulariaKAlSi3O8
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ AnhydriteCaSO4
Caβ“˜ CalciteCaCO3
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ GypsumCaSO4 · 2H2O
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caβ“˜ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Caβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
TiTitanium
Tiβ“˜ TitaniteCaTi(SiO4)O
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ AlmandineFe32+Al2(SiO4)3
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ PyriteFeS2
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feβ“˜ StauroliteFe22+Al9Si4O23(OH)
CuCopper
Cuβ“˜ BrochantiteCu4(SO4)(OH)6
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChalcanthiteCuSO4 · 5H2O
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuβ“˜ CovelliteCuS
Cuβ“˜ CupriteCu2O
Cuβ“˜ LinaritePbCu(SO4)(OH)2
Cuβ“˜ MalachiteCu2(CO3)(OH)2
Cuβ“˜ PseudomalachiteCu5(PO4)2(OH)4
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
Asβ“˜ ArsenicAs
PbLead
Pbβ“˜ AnglesitePbSO4
Pbβ“˜ CerussitePbCO3
Pbβ“˜ LinaritePbCu(SO4)(OH)2

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