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Hamm Mine, Windham, Windham County, Vermont, USAi
Regional Level Types
Hamm MineMine (Flooded)
WindhamTown
Windham CountyCounty
VermontState
USACountry

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PhotosMapsSearch
00004700017558155766252.jpg
Hamm Mine

Hamm Mine, Windham, Windham County, Vermont, USA
09024790017606568593239.jpg
Magnetite

Hamm Mine, Windham, Windham County, Vermont, USA
03019710017272050268525.jpg
Ankerite

Hamm Mine, Windham, Windham County, Vermont, USA
06182190017272050255729.jpg
Hamm Mine

Hamm Mine, Windham, Windham County, Vermont, USA
09454540017606568579806.jpg
Magnetite

Hamm Mine, Windham, Windham County, Vermont, USA
03019710017272050268525.jpg
Ankerite

Hamm Mine, Windham, Windham County, Vermont, USA
06182190017272050255729.jpg
Hamm Mine

Hamm Mine, Windham, Windham County, Vermont, USA
02876860017607253275000.jpg
Magnetite

Hamm Mine, Windham, Windham County, Vermont, USA
Latitude & Longitude (WGS84):
43° 12' 16'' North , 72° 42' 29'' West
Latitude & Longitude (decimal):
43.20453,-72.70815
GRN:
N29W39
Type:
Mine (Flooded) - last checked 2022
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Londonderry1,742 (2017)8.3km
Chester2,994 (2017)11.2km
Weston570 (2017)11.8km
Jamaica1,011 (2017)12.9km
Saxtons River552 (2017)17.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Keene Mineral ClubKeene, New Hampshire46km
Rutland Rock & Mineral ClubRutland, Vermont50km
Mindat Locality ID:
22491
Long-form identifier:
mindat:1:2:22491:3
GUID (UUID V4):
0
Other/historical names associated with this locality:
Hamm Talc Mine; Vermont Talc Company Mine


The mine covers an area of some 84 acres and was worked as an open pit.

Vermont Talc a division of OMYA Inc., operated this talc mine from 1982 to 1997, after reaching a depth of 140 feet. The mine pit began filling with water as soon as mining ceased, resulting in a 9 acre body of water.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


7 valid minerals.

Detailed Mineral List:

ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
ⓘ 'Chlorite Group'
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Magnesite
Formula: MgCO3
ⓘ Magnesite var. Iron-bearing Magnesite
Formula: (Mg,Fe)CO3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Talc
Formula: Mg3Si4O10(OH)2

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
ⓘMagnesite
var. Iron-bearing Magnesite		5.AB.05(Mg,Fe)CO3
ⓘCalcite5.AB.05CaCO3
ⓘMagnesite5.AB.05MgCO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
ⓘDolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ Magnesite var. Iron-bearing Magnesite(Mg,Fe)CO3
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ Magnesite var. Iron-bearing Magnesite(Mg,Fe)CO3
Oⓘ CalciteCaCO3
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ DolomiteCaMg(CO3)2
Oⓘ MagnesiteMgCO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ Magnesite var. Iron-bearing Magnesite(Mg,Fe)CO3
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ MagnesiteMgCO3
Mgⓘ TalcMg3Si4O10(OH)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Magnesite var. Iron-bearing Magnesite(Mg,Fe)CO3
Feⓘ MagnetiteFe2+Fe23+O4

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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.

References

Jacobs, E. C. (1916). The Talc and Verde Antique Deposits of Vermont, in Report of the State Geologist on the Mineral Industries and Geology of Vermont 1915-1916 (Burlington, VT), pp. 234-235.
www.vermontjudiciary.org (n.d.) https://www.vermontjudiciary.org/sites/default/files/documents/Hamm%20Mine%20JO%20Appeal%2C%20271-11-06.pdf
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