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Norwalk, Fairfield County, Connecticut, USAi
Regional Level Types
Norwalk- not defined -
Fairfield CountyCounty
ConnecticutState
USACountry

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PhotosMapsSearch
01125380014950223757019.jpg
Stilbite-Ca

State route 15 / US highway 7 interchange area, Norwalk, Fairfield County, Connecticut, USA
01739000014950223752348.jpg
Stilbite-Ca

State route 15 / US highway 7 interchange area, Norwalk, Fairfield County, Connecticut, USA
01125380014950223757019.jpg
Stilbite-Ca

State route 15 / US highway 7 interchange area, Norwalk, Fairfield County, Connecticut, USA
01739000014950223752348.jpg
Stilbite-Ca

State route 15 / US highway 7 interchange area, Norwalk, Fairfield County, Connecticut, USA
01125380014950223757019.jpg
Stilbite-Ca

State route 15 / US highway 7 interchange area, Norwalk, Fairfield County, Connecticut, USA
01739000014950223752348.jpg
Stilbite-Ca

State route 15 / US highway 7 interchange area, Norwalk, Fairfield County, Connecticut, USA
Latitude & Longitude (WGS84):
41° 7' 6'' North , 73° 24' 43'' West
Latitude & Longitude (decimal):
41.11833,-73.41194
GeoHash:
G#: dr7ccmr59
GRN:
N28W40
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Norwalk88,485 (2017)0.3km
East Norwalk84,530 (2017)1.8km
Westport26,391 (2017)5.2km
Darien20,732 (2017)6.5km
New Canaan19,738 (2017)7.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Stamford Mineralogical SocietyStamford, Connecticut13km
Danbury Mineralogical SocietyDanbury, Connecticut31km
Nassau Mineral ClubGlen Cove, New York34km
New Haven Mineral ClubNew Haven, Connecticut46km
Suffolk Gem & Mineral ClubBay Shore, New York46km


A city first incorporated in 1651, it originally included land that is now the town of Wilton (1802), the eastern part of the town of New Canaan (1801), and the western part of the town of Fairfield (1835).

Geologically, Norwalk is underlain mostly by mixed Ordovician Trap Falls schist and unnamed felsic orthogneiss, with some belts of Ordovician Harrison Gneiss metadiorite near the coast. These rocks are part of the Connecticut Valley Terrane.

Coordinates are for the city center where Wall Street crosses the Norwalk River.

Select Mineral List Type

Standard Detailed Gallery Strunz 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

10 valid minerals.

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
Description: in cavities in granite or granite gneiss
Reference: Schairer, James F. (1931), The Minerals of Connecticut. State Geological and Natural History Survey of Connecticut Bulletin 51, Hartford.
ⓘ Albite var. Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 85.
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 85.
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Reference: The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 85.
ⓘ Calcite
Formula: CaCO3
Reference: The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 85.
ⓘ Chalcopyrite
Formula: CuFeS2
Reference: Altamura (2005)
ⓘ 'Chlorite Group'
Reference: Hiller, John. (1967), unpublished sketch map.
ⓘ Galena
Formula: PbS
Reference: Altamura (2005)
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
Colour: red
Description: "The eurite of Norwalk (525) abounds in minute but well-formed garnets." Sample 525: "Garnet. In very minute, red, transparent crystals, in eurite. Norwalk." Shepard (1837). Species is almost certainly almandine, which is the typical garnet species in Connecticut gneiss and schist.
Reference: Shepard, Charles U. (1837), A Report on the Geological Survey of Connecticut. Hamlen, New Haven.
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 85.
ⓘ Microcline
Formula: K(AlSi3O8)
Reference: The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 85.
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 85.
ⓘ Pyrite
Formula: FeS2
Reference: Altamura (2005)
ⓘ Quartz
Formula: SiO2
Reference: The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 85.
trans.png
Stilbite-Ca

State route 15 / US highway 7 interchange area, Norwalk, Fairfield County, Connecticut, USA
ⓘ Stilbite-Ca
Formula: NaCa4(Si27Al9)O72 · 28H2O
Colour: orange
Reference: P Cristofono collection, 2005

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘStilbite-Ca9.GE.10NaCa4(Si27Al9)O72 · 28H2O
Unclassified Minerals, Rocks, etc.
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
ⓘ'Chlorite Group'-
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Oⓘ CalciteCaCO3
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ MicroclineK(AlSi3O8)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ QuartzSiO2
Oⓘ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Oⓘ AlbiteNa(AlSi3O8)
FFluorine
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
NaSodium
Naⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Naⓘ AlbiteNa(AlSi3O8)
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ MicroclineK(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Alⓘ AlbiteNa(AlSi3O8)
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ MicroclineK(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ QuartzSiO2
Siⓘ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
Siⓘ AlbiteNa(AlSi3O8)
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ GalenaPbS
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Caⓘ CalciteCaCO3
Caⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ Stilbite-CaNaCa4(Si27Al9)O72 · 28H2O
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
PbLead
Pbⓘ GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Shepard, Charles U. (1837), A Report on the Geological Survey of Connecticut. Hamlen, New Haven.
Manchester, James G. (1931): The Minerals of New York City and Its Environs. New York Mineralogical Club Bulletin: 3(1): 85.
Schairer, James F. (1931), The Minerals of Connecticut. State Geological and Natural History Survey of Connecticut Bulletin 51, Hartford.

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