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Windham, Windham County, Connecticut, USAi
Regional Level Types
WindhamTown
Windham CountyCounty
ConnecticutState
USACountry

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PhotosMapsSearchMineralogy
00788250017272039989052.jpg
"Willy"

Willimantic, Windham, Windham County, Connecticut, USA
02830880017272040012933.jpg
Willimantic River at Whitewater Park

Willimantic, Windham, Windham County, Connecticut, USA
02381810017272316313927.jpg
Amethyst

Windham, Windham County, Connecticut, USA
04429770017272044692880.jpg
Sillimanite, etc.

Willimantic, Windham, Windham County, Connecticut, USA
00788250017272039989052.jpg
"Willy"

Willimantic, Windham, Windham County, Connecticut, USA
02830880017272040012933.jpg
Willimantic River at Whitewater Park

Willimantic, Windham, Windham County, Connecticut, USA
02381810017272316313927.jpg
Amethyst

Windham, Windham County, Connecticut, USA
01558030017272316328991.jpg
Sillimanite, etc.

Willimantic, Windham, Windham County, Connecticut, USA
07145210017272082417180.jpg
"Willy"

Willimantic, Windham, Windham County, Connecticut, USA
02830880017272040012933.jpg
Willimantic River at Whitewater Park

Willimantic, Windham, Windham County, Connecticut, USA
Neighbouring regions:
Lebanon, New London County, Connecticut, USA
Coventry, Tolland County, Connecticut, USA
Mansfield, Windham County, Connecticut, USA
Type:
Town
Largest Settlements:
PlacePopulation
Windham23,072 (2017)
Willimantic17,737 (2017)
South Windham1,421 (2017)
Mindat Locality ID:
238019
Long-form identifier:
mindat:1:2:238019:6
GUID (UUID V4):
0


Windham is a town.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

20 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
ⓘ Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Habit: micaceous
Colour: black
Description: Most obvious in calcite-rich veins cutting annite gneiss (probably Tatnic Hill Formation).
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ Bismutite
Formula: (BiO)2CO3
Habit: bent columnar structure
Colour: dark gray
Description: 1/4-pound pseudomorph after bismuthinite, analyzed by Wells in 1887.
ⓘ Calcite
Formula: CaCO3
Habit: anhedral
Colour: white
Description: Cleavable masses in veins with annite, pyrite, chlorite and rutile cutting annite gneiss (probably Tatnic Hill Formation).
ⓘ 'Chlorite Group'
Habit: granular masses
Colour: dark green
Description: In veins with calcite, annite, pyrite, and rutile cutting annite gneiss (probably Tatnic Hill Formation).
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Fluorite
Formula: CaF2
Colour: colorless to smoky
Fluorescence: blue under long wave UV
Description: massive grains with aquamarine, usually crumble out leaving voids
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Molybdenite
Formula: MoS2
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ Pyrite
Formula: FeS2
Habit: cubic, pyritohedral
Description: Crude crystals to 1.5 cm in calcite/annite/chlorite/rutile veins cutting annite gneiss (probably Tatnic Hill Formation).
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Smoky Quartz
Formula: SiO2
Description: Described as occurring in "fine crystals". Perhaps it is the source of this unattributed specimen: http://www.mindat.org/photo-472700.html
ⓘ Rutile
Formula: TiO2
Habit: elongated prism
Colour: black
Description: Micro crystals embedded in calcite with granular chlorite, in veins with annite and pyrite cutting annite gneiss (probably Tatnic Hill Formation).
✪ 'Scapolite'
Habit: elongated prismatic with square cross-section
Colour: white
Fluorescence: pink under SW, white under MW and LW UV
Description: Bar-shaped crystals to about 3 cm in quartz. From an unrecorded locality, formerly in the John Legro collection from the 1920s.
✪ Sillimanite
Formula: Al2(SiO4)O
Habit: elongated prisms
Colour: clove brown
Description: Vitreous, translucent, somewhat chatoyant, clove brown crystals to 4 cm in granular quartz with magnetite are from an unspecified location.
ⓘ Titanite
Formula: CaTiO(SiO4)
Habit: rectangular, tabular prisms
Colour: yellow-green
Description: Schooner (1961) states: "Golden crystals, up to a couple of inches across, and fairly thick, have been collected, by the author, at the Mansfield Hollow Dam; they accompany hornblende."
ⓘ Topaz
Formula: Al2(SiO4)(F,OH)2
Habit: elongated prismatic
Colour: colorless
Description: Partial, at least 3 cm prismatic crystal in pegmatitic albite/quartz matrix in the Yale Peabody Museum collection MIN.044604. https://collections.peabody.yale.edu/search/Record/YPM-MIN-044604

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘQuartz4.DA.05SiO2
ⓘvar. Smoky Quartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘBismutite5.BE.25(BiO)2CO3
Group 9 - Silicates
ⓘSillimanite9.AF.05Al2(SiO4)O
ⓘTopaz9.AF.35Al2(SiO4)(F,OH)2
ⓘTitanite9.AG.15CaTiO(SiO4)
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘAnnite9.EC.20KFe2+3(AlSi3O10)(OH)2
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Scapolite'-
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
Hⓘ AnniteKFe32+(AlSi3O10)(OH)2
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ GoethiteFe3+O(OH)
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ TopazAl2(SiO4)(F,OH)2
Hⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
CCarbon
Cⓘ Bismutite(BiO)2CO3
Cⓘ CalciteCaCO3
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AnniteKFe32+(AlSi3O10)(OH)2
Oⓘ Bismutite(BiO)2CO3
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CalciteCaCO3
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ GoethiteFe3+O(OH)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MicroclineK(AlSi3O8)
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ SillimaniteAl2(SiO4)O
Oⓘ Quartz var. Smoky QuartzSiO2
Oⓘ TitaniteCaTiO(SiO4)
Oⓘ TopazAl2(SiO4)(F,OH)2
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fⓘ FluoriteCaF2
Fⓘ TopazAl2(SiO4)(F,OH)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
MgMagnesium
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AnniteKFe32+(AlSi3O10)(OH)2
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ MicroclineK(AlSi3O8)
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ SillimaniteAl2(SiO4)O
Alⓘ TopazAl2(SiO4)(F,OH)2
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AnniteKFe32+(AlSi3O10)(OH)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ MicroclineK(AlSi3O8)
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ QuartzSiO2
Siⓘ SillimaniteAl2(SiO4)O
Siⓘ Quartz var. Smoky QuartzSiO2
Siⓘ TitaniteCaTiO(SiO4)
Siⓘ TopazAl2(SiO4)(F,OH)2
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
SSulfur
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
KPotassium
Kⓘ AnniteKFe32+(AlSi3O10)(OH)2
Kⓘ MicroclineK(AlSi3O8)
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ FluoriteCaF2
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ TitaniteCaTiO(SiO4)
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
TiTitanium
Tiⓘ RutileTiO2
Tiⓘ TitaniteCaTiO(SiO4)
FeIron
Feⓘ AnniteKFe32+(AlSi3O10)(OH)2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ GoethiteFe3+O(OH)
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
MoMolybdenum
Moⓘ MolybdeniteMoS2
BiBismuth
Biⓘ Bismutite(BiO)2CO3

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Windham,_Connecticut
Wikidata ID:Q1898521
GeoNames ID:4845916

Localities in this Region

USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate

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