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Norfolk, Litchfield County, Connecticut, USAi
Regional Level Types
Norfolk- not defined -
Litchfield CountyCounty
ConnecticutState
USACountry

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PhotosMapsSearch
03055430016106620445958.jpg
Malachite, etc.

Norfolk, Litchfield County, Connecticut, USA
03055430016106620445958.jpg
Malachite, etc.

Norfolk, Litchfield County, Connecticut, USA
09164410016100529129926.jpg
Malachite, etc.

Norfolk, Litchfield County, Connecticut, USA
Latitude & Longitude (WGS84):
41° 59' 39'' North , 73° 12' 8'' West
Latitude & Longitude (decimal):
41.99417,-73.20222
GeoHash:
G#: dr7yyhzcb
GRN:
N28W40
KΓΆppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Norfolk553 (2017)0.0km
Canaan1,212 (2017)11.1km
Winchester Center10,830 (2017)11.8km
Falls Village538 (2017)14.0km
Sandisfield838 (2017)14.0km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Bristol Gem & Mineral ClubBristol, Connecticut42km


A town first settled in 1744 and incorporated in 1758, later than most surrounding towns because of the dense woods, rocky soil and high elevation. The latter results from the bedrock geology, which consists mostly of very erosion-resistant and intensely folded and faulted metamorphic rocks. Norfolk lies on the western side of the Berkshire Massif of Grenville-aged, Laurentian terrane, thus roughly 3/4 of Norfolk's bedrock is composed of these roughly 1+ billion-year-old mostly gneissic rocks, with areas of schist and amphibolite. Magnetite concentrations were noted by Dana (1890) from 2 places in these rocks. The remaining 1/4 is situated in the SW corner of the town, roughly south of the Blackberry River and west of Route 272, and consists mostly of allochthonous Neoproterozoic-Cambrian Canaan Mountain Schist and Gneiss, though the boundary between these terranes is complexly folded. Within this allochthon are two erosional windows into the underlying Neoproterozoic-Cambrian Dalton Formation quartzite and Cambro-Ordovician Stockbridge Marble. The larger Tobey Pond Window underlies the irregular lowland just SW of downtown encompassing Tobey Pond and Brook, Spaulding Brook and wetlands. Dana (1890) reports on an outcrop of the marble where spinel and chondrodite were found. The smaller North Pond Window is a narrow feature underlying North Pond and wetlands at its north end. Eldridge (1900) notes that pegmatite dikes cut all these rocks. Several high-angle, probably Mesozoic-aged regional normal faults cut these rocks; one is oriented N-S and extends through town from Wood Creek Pond and paralleling Route 272 about 1/2 mile to its E. Two others trend NW-SE from Benedict Pond and Doolittle Lake.

Coordinates are for the northern intersection of state Routes 44 and 272 (North Street).

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

15 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Reference: Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.
β“˜ Albite
Formula: Na(AlSi3O8)
Colour: white
Description: In pegmatites.
Reference: Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.
β“˜ Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Colour: black
Description: In pegmatites.
Reference: Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.
β“˜ '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: Dana 6: 1061.
β“˜ Bornite
Formula: Cu5FeS4
Habit: grains
Colour: iridescent blue
Description: Grains in a cobble of quartz with some altered to malachite.
Reference: Harold Moritz collection
β“˜ Chondrodite
Formula: Mg5(SiO4)2F2
Description: "Mr. Cornish states that the limestone ledge is on the land of Mr. Ralph Crissy, near a spring southeast of his house, associated with hard gneiss, granite and some hornblendic rocks, which have in general a high eastward dip; and that it afforded him octahedrons of spinel (some of them half an inch across), together with a little chondrodite. The outcrop is only 15 yards long and 20 wide"
Reference: Dana, James D. (1890), Archaean limestone and other rocks in Norfolk, Connecticut. American Journal of Science: s. 3, 39: 321.
β“˜ 'Fayalite-Forsterite Series'
Description: sheared and altered
Reference: Harwood, David S. (1979), Bedrock Geologic Map of the Norfolk Quadrangle, Connecticut. US Geological Survey map GQ-1518.
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
Reference: Dana, James D. (1890), Archaean limestone and other rocks in Norfolk, Connecticut. American Journal of Science: s. 3, 39: 321.
trans.png
Malachite, etc.

Norfolk, Litchfield County, Connecticut, USA
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
Habit: fibrous, acicular
Colour: green
Description: Alteration of bornite grains in a cobble of quartz with the translucent quartz tinted green by malachite inclusions.
Reference: Harold Moritz collection
β“˜ Microcline
Formula: K(AlSi3O8)
Colour: red
Description: In pegmatites.
Reference: Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: In pegmatites.
Reference: Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.
β“˜ Quartz
Formula: SiO2
Reference: Dana 6: 1061.
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.
β“˜ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
Reference: Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.
β“˜ Sillimanite
Formula: Al2(SiO4)O
Reference: Dana 6: 1061.
β“˜ Spinel
Formula: MgAl2O4
Habit: octahedral
Description: "Mr. Cornish states that the limestone ledge is on the land of Mr. Ralph Crissy, near a spring southeast of his house, associated with hard gneiss, granite and some hornblendic rocks, which have in general a high eastward dip; and that it afforded him octahedrons of spinel (some of them half an inch across), together with a little chondrodite. The outcrop is only 15 yards long and 20 wide"
Reference: Dana, James D. (1890), Archaean limestone and other rocks in Norfolk, Connecticut. American Journal of Science: s. 3, 39: 321.
β“˜ Talc
Formula: Mg3Si4O10(OH)2
Reference: Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.
β“˜ Tremolite
Formula: ◻{Ca2}{Mg5}(Si8O22)(OH)2
Habit: bladed
Description: coarse blades
Reference: Harwood, David S. (1979), Bedrock Geologic Map of the Norfolk Quadrangle, Connecticut. US Geological Survey map GQ-1518.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Bornite2.BA.15Cu5FeS4
Group 4 - Oxides and Hydroxides
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Quartz4.DA.05SiO2
β“˜Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Albite9.FA.35Na(AlSi3O8)
β“˜Annite9.EC.20KFe2+3(AlSi3O10)(OH)2
β“˜Chondrodite9.AF.45Mg5(SiO4)2F2
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Sillimanite9.AF.05Al2(SiO4)O
β“˜Talc9.EC.05Mg3Si4O10(OH)2
β“˜Tremolite9.DE.10β—»{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
β“˜'Fayalite-Forsterite Series'-
β“˜'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Hβ“˜ TalcMg3Si4O10(OH)2
Hβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Hβ“˜ Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
BBoron
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ QuartzSiO2
Oβ“˜ SillimaniteAl2(SiO4)O
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Oβ“˜ TalcMg3Si4O10(OH)2
Oβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
Oβ“˜ SpinelMgAl2O4
Oβ“˜ ChondroditeMg5(SiO4)2F2
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Oβ“˜ Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Fβ“˜ ChondroditeMg5(SiO4)2F2
NaSodium
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Naβ“˜ AlbiteNa(AlSi3O8)
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Mgβ“˜ TalcMg3Si4O10(OH)2
Mgβ“˜ SpinelMgAl2O4
Mgβ“˜ ChondroditeMg5(SiO4)2F2
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgβ“˜ Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Alβ“˜ SillimaniteAl2(SiO4)O
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Alβ“˜ SpinelMgAl2O4
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ QuartzSiO2
Siβ“˜ SillimaniteAl2(SiO4)O
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Siβ“˜ TalcMg3Si4O10(OH)2
Siβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
Siβ“˜ ChondroditeMg5(SiO4)2F2
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Siβ“˜ Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
Sβ“˜ BorniteCu5FeS4
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Kβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ Tremolite◻{Ca2}{Mg5}(Si8O22)(OH)2
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
FeIron
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feβ“˜ AnniteKFe32+(AlSi3O10)(OH)2
Feβ“˜ BorniteCu5FeS4
CuCopper
Cuβ“˜ BorniteCu5FeS4
Cuβ“˜ MalachiteCu2(CO3)(OH)2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Dana, James D. (1890), Archaean limestone and other rocks in Norfolk, Connecticut. American Journal of Science: s. 3, 39: 321.
Eldridge, Rev. Joseph. (1900), History of Norfolk. Massachusetts Printing Co., Everett, Mass.: 497.

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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.
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