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

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Key
Latitude & Longitude (WGS84):
41° 18' 4'' North , 72° 51' 55'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
East Haven29,257 (2017)2.8km
Branford29,438 (2017)4.8km
Branford Center5,819 (2017)5.0km
New Haven130,322 (2017)5.3km
West Haven54,927 (2017)7.6km


A small quarry in Jurassic diabase (trap rock) intrusion, much of it brecciated, with mostly calcite and quartz crystals in the interstitial spaces. Worked since at least the early 1970s until around 1990. It was a fee collecting site (Powell and Vogt, 1987) in the 1980s until at least 1990. Famous for rare quartz on calcite "skunks" and abundant nice micro fibrous goethite and rosette hematite crystals developed on and in the calcite and quartz. Also noted for the presence of tachylite (igneous glass), which is very rare older than the Cretaceous as it devitrifies over geologic time.

This is the same locality referred to in old notes by John Hiller as the traprock area behind the Weeping Willow Restaurant on Laurel Street.

The site is closed and the land largely reclaimed and developed.

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State
Anhydrite
Formula: CaSO4
Habit: tabular
Description: As molds in later forming minerals calcite and quartz, as the anhydrite later dissolved away.
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.
Aragonite
Formula: CaCO3
Habit: short fibrous acicular
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.
Baryte
Formula: BaSO4
Reference: Rocks & Minerals (1995) 70:396-409
Calcite
Formula: CaCO3
Habit: scalenohedral
Colour: white
Description: Crystals to 3 cm, though typically around 1 cm.
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.
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'
Habit: microscopic flakes, or crusts
Colour: green, pink to cream
Description: As exceedingly fine flakes. It is most commonly green, but may also be found pink or cream-colored crusts, also as inclusions coloring quartz or calcite.
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.
Goethite
Formula: α-Fe3+O(OH)
Habit: fibrous, acicular microcrystals, singly or in fan-shaped or bow tie aggregates
Colour: brown to golden yellow
Description: Needle-like and very small (micro) in size. It has a multi-colored tarnish which causes some specimens to be dark brown at the base, tapering off to a golden color at the end. Many of the aggregates appear as miniature "pincushions" which are generally dark brown. When many tufts occur together, they take on a velvety appearance which is quite beautiful. Another attractive aggregate occurrence are the goethite "bowties" which can frequently be found. Goethite is always found associated with quartz and calcite, and can be found as inclusions in quartz, which occurred during the final stages of crystal development.
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.
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
Habit: microscopic tabular plates and rosettes or botryoidal
Colour: maroon to black
Description: Black, platy rosettes ranging in size from super-micro to a more easily-seen three millimeters. As an inclusion in quartz, in which case it accounts for the bright red color of the host crystal. It also can be frequently observed as an inclusion in calcite. The red staining of any mineral found where can be attributed to hematite.
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.
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: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State
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
Habit: very short prismatic or quartzoid, commonly doubly-terminated
Colour: colorless to white
Description: Crystals to 1 cm, commonly colored green or red by chlorite or hematite inclusions. Also commonly penetrated by goethite fibers.
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.
Quartz var:
Habit: cryptocrystalline
Colour: pale blue-gray to gray
Description: Thin band rarely lining vesicles grading to quartz or amethyst toward the center.
Reference: Harold Moritz collection
Quartz var:
Formula: SiO2
Habit: very short prismatic or quartzoid
Colour: pale purple
Description: Many crystals appear to be amethyst but are actually colored reddish by hematite and goethite inclusions.
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.
Quartz var:
Formula: SiO2
Habit: very short prismatic or quartzoid
Colour: dark brown to black
Description: Crystals to 1 cm, commonly penetrated by goethite fibers.
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.
Talc
Formula: Mg3Si4O10(OH)2
Reference: Januzzi, 1976. Mineral Localities of CT and Southeastern NY State

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
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: Smoky Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
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)
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
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
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 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)
Unclassified Minerals, Mixtures, etc.
Aragonite-CaCO3
'Chlorite Group'-
Quartz
var: Agate
-SiO2
var: Amethyst-SiO2
var: Smoky Quartz-SiO2

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H PrehniteCa2Al2Si3O10(OH)2
H TalcMg3Si4O10(OH)2
H GypsumCaSO4 · 2H2O
CCarbon
C CalciteCaCO3
C AragoniteCaCO3
OOxygen
O QuartzSiO2
O Quartz (var: Smoky Quartz)SiO2
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O CalciteCaCO3
O Quartz (var: Amethyst)SiO2
O AlbiteNa(AlSi3O8)
O PrehniteCa2Al2Si3O10(OH)2
O TalcMg3Si4O10(OH)2
O BaryteBaSO4
O AnhydriteCaSO4
O AragoniteCaCO3
O GypsumCaSO4 · 2H2O
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al AlbiteNa(AlSi3O8)
Al PrehniteCa2Al2Si3O10(OH)2
SiSilicon
Si QuartzSiO2
Si Quartz (var: Smoky Quartz)SiO2
Si Quartz (var: Amethyst)SiO2
Si AlbiteNa(AlSi3O8)
Si PrehniteCa2Al2Si3O10(OH)2
Si TalcMg3Si4O10(OH)2
SSulfur
S PyriteFeS2
S MarcasiteFeS2
S BaryteBaSO4
S AnhydriteCaSO4
S ChalcopyriteCuFeS2
S GypsumCaSO4 · 2H2O
CaCalcium
Ca CalciteCaCO3
Ca PrehniteCa2Al2Si3O10(OH)2
Ca AnhydriteCaSO4
Ca AragoniteCaCO3
Ca GypsumCaSO4 · 2H2O
FeIron
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe PyriteFeS2
Fe MarcasiteFeS2
Fe ChalcopyriteCuFeS2
CuCopper
Cu ChalcopyriteCuFeS2
BaBarium
Ba BaryteBaSO4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Schooner, Richard. (1961): The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut.
Ulrich, William. (1975), A field guide to the Cinque traprock quarry. Lapidary Journal: 28: 1608-1622, 1654.
Januzzi and Seaman (1976): Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut.
Webster, Bud. (1978): Mineral Collector’s Field Guide Connecticut.
Powell, Richard C. and Wolfgang Vogt. (1987), Cinque Quarry, A Suburban Site in Connecticut Makes Collecting a Cinch. Rock and Gem: (6): 36-39.
Henderson, William, A. Jr. and Carl A. Francis. (1989), On Right Angle Bends in Filiform Pyrite. Mineralogical Record: 20(6): 463.
Januzzi, Ronald. E. (1994): Mineral Data Book - Western Connecticut and Environs. Mineralogical Press, Danbury, Connecticut.
Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 403.

Other Regions, Features and Areas containing this locality

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