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Windham Co., Connecticut, USA

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Locality type:County


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Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

27 valid minerals.

Rock Types Recorded

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

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Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite
Formula: Na(AlSi3O8)
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Beryl
Formula: Be3Al2(Si6O18)
Bismutite
Formula: (BiO)2CO3
Calcite
Formula: CaCO3
Calcite var: Ferroan Calcite
Formula: (Ca,Fe)CO3
'Chlorite Group'
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Corundum
Formula: Al2O3
Fluorite
Formula: CaF2
'Garnet Group'
Formula: X3Z2(SiO4)3
'Gneiss'
Goethite
Formula: α-Fe3+O(OH)
Graphite
Formula: C
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974
Hematite
Formula: Fe2O3
'Hornblende'
Kaolinite
Formula: Al2(Si2O5)(OH)4
Kyanite
Formula: Al2(SiO4)O
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974
Magnetite
Formula: Fe2+Fe3+2O4
Microcline
Formula: K(AlSi3O8)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var: Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
'Pegmatite'
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Pyrite
Formula: FeS2
Pyrrhotite
Formula: Fe7S8
Quartz
Formula: SiO2
Reference: Harold Moritz collection
Quartz var: Amethyst
Formula: SiO2
Reference: Harold Moritz collection
Quartz var: Milky Quartz
Formula: SiO2
Quartz var: Rose Quartz
Formula: SiO2
Quartz var: Smoky Quartz
Formula: SiO2
Rutile
Formula: TiO2
'Scapolite'
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Sillimanite
Formula: Al2(SiO4)O
'Stilbite subgroup'
Titanite
Formula: CaTi(SiO4)O
Topaz ?
Formula: Al2(SiO4)(F,OH)2
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Corundum4.CB.05Al2O3
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Milky Quartz4.DA.05SiO2
var: Rose Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Bismutite5.BE.25(BiO)2CO3
Calcite5.AB.05CaCO3
var: Ferroan Calcite5.AB.05(Ca,Fe)CO3
Group 9 - Silicates
'Actinolite'9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Albite'9.FA.35Na(AlSi3O8)
Annite9.EC.20KFe2+3(AlSi3O10)(OH)2
Beryl9.CJ.05Be3Al2(Si6O18)
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Kyanite9.AF.15Al2(SiO4)O
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Fuchsite9.EC.15K(Al,Cr)3Si3O10(OH)2
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Sillimanite9.AF.05Al2(SiO4)O
Titanite9.AG.15CaTi(SiO4)O
Topaz ?9.AF.35Al2(SiO4)(F,OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Chlorite Group-
Garnet Group-X3Z2(SiO4)3
Gneiss-
Hornblende-
Limonite-(Fe,O,OH,H2O)
Pegmatite-
Scapolite-
Stilbite subgroup-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Hematite4.3.1.2Fe2O3
AX2
Rutile4.4.1.1TiO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bismutite16a.3.5.1(BiO)2CO3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Kyanite52.2.2c.1Al2(SiO4)O
Sillimanite52.2.2a.1Al2(SiO4)O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz ?52.3.1.1Al2(SiO4)(F,OH)2
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Annite71.2.2b.3KFe2+3(AlSi3O10)(OH)2
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
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)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Calcite
var: Ferroan Calcite
-(Ca,Fe)CO3
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3
'Gneiss'-
'Hornblende'-
Kaolinite-Al2(Si2O5)(OH)4
'Limonite'-(Fe,O,OH,H2O)
Muscovite
var: Fuchsite
-K(Al,Cr)3Si3O10(OH)2
'Pegmatite'-
Quartz
var: Amethyst
-SiO2
var: Milky Quartz-SiO2
var: Rose Quartz-SiO2
var: Smoky Quartz-SiO2
'Scapolite'-
'Stilbite subgroup'-

List of minerals for each chemical element

HHydrogen
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
H AnniteKFe32+(AlSi3O10)(OH)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
H Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
H Goethiteα-Fe3+O(OH)
H KaoliniteAl2(Si2O5)(OH)4
H Limonite(Fe,O,OH,H2O)
H MuscoviteKAl2(AlSi3O10)(OH)2
H PrehniteCa2Al2Si3O10(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H TopazAl2(SiO4)(F,OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C Bismutite(BiO)2CO3
C CalciteCaCO3
C Calcite (var: Ferroan Calcite)(Ca,Fe)CO3
C GraphiteC
OOxygen
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O AlbiteNa(AlSi3O8)
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O Quartz (var: Amethyst)SiO2
O AnniteKFe32+(AlSi3O10)(OH)2
O BerylBe3Al2(Si6O18)
O Bismutite(BiO)2CO3
O CalciteCaCO3
O ClinochloreMg5Al(AlSi3O10)(OH)8
O CorundumAl2O3
O Calcite (var: Ferroan Calcite)(Ca,Fe)CO3
O Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
O Garnet GroupX3Z2(SiO4)3
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O KyaniteAl2(SiO4)O
O Limonite(Fe,O,OH,H2O)
O MagnetiteFe2+Fe23+O4
O MicroclineK(AlSi3O8)
O Quartz (var: Milky Quartz)SiO2
O MuscoviteKAl2(AlSi3O10)(OH)2
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
O Quartz (var: Rose Quartz)SiO2
O RutileTiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O SillimaniteAl2(SiO4)O
O Quartz (var: Smoky Quartz)SiO2
O TitaniteCaTi(SiO4)O
O TopazAl2(SiO4)(F,OH)2
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
FFluorine
F FluoriteCaF2
F TopazAl2(SiO4)(F,OH)2
NaSodium
Na AlbiteNa(AlSi3O8)
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al AlbiteNa(AlSi3O8)
Al AnniteKFe32+(AlSi3O10)(OH)2
Al BerylBe3Al2(Si6O18)
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al CorundumAl2O3
Al Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Al KaoliniteAl2(Si2O5)(OH)4
Al KyaniteAl2(SiO4)O
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al PrehniteCa2Al2Si3O10(OH)2
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al SillimaniteAl2(SiO4)O
Al TopazAl2(SiO4)(F,OH)2
SiSilicon
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si AlbiteNa(AlSi3O8)
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si Quartz (var: Amethyst)SiO2
Si AnniteKFe32+(AlSi3O10)(OH)2
Si BerylBe3Al2(Si6O18)
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Si Garnet GroupX3Z2(SiO4)3
Si KaoliniteAl2(Si2O5)(OH)4
Si KyaniteAl2(SiO4)O
Si MicroclineK(AlSi3O8)
Si Quartz (var: Milky Quartz)SiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
Si Quartz (var: Rose Quartz)SiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si SillimaniteAl2(SiO4)O
Si Quartz (var: Smoky Quartz)SiO2
Si TitaniteCaTi(SiO4)O
Si TopazAl2(SiO4)(F,OH)2
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
SSulfur
S PyriteFeS2
S PyrrhotiteFe7S8
KPotassium
K AnniteKFe32+(AlSi3O10)(OH)2
K Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca CalciteCaCO3
Ca Calcite (var: Ferroan Calcite)(Ca,Fe)CO3
Ca FluoriteCaF2
Ca PrehniteCa2Al2Si3O10(OH)2
Ca TitaniteCaTi(SiO4)O
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
TiTitanium
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
CrChromium
Cr Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
FeIron
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe AnniteKFe32+(AlSi3O10)(OH)2
Fe Calcite (var: Ferroan Calcite)(Ca,Fe)CO3
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
BiBismuth
Bi Bismutite(BiO)2CO3

Localities in this Region
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