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French Mine, Alstead, Cheshire County, New Hampshire, USAi
Regional Level Types
French MineMine
Alstead- not defined -
Cheshire CountyCounty
New HampshireState
USACountry

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PhotosMapsSearch
04201100017272028048793.jpg
French Mine (pre-1923)

French Mine, Alstead, Cheshire County, New Hampshire, USA
07355720017272028048291.jpg
Graftonite

French Mine, Alstead, Cheshire County, New Hampshire, USA
04201100017272028048793.jpg
French Mine (pre-1923)

French Mine, Alstead, Cheshire County, New Hampshire, USA
07355720017272028048291.jpg
Graftonite

French Mine, Alstead, Cheshire County, New Hampshire, USA
04201100017272028048793.jpg
French Mine (pre-1923)

French Mine, Alstead, Cheshire County, New Hampshire, USA
07355720017272028048291.jpg
Graftonite

French Mine, Alstead, Cheshire County, New Hampshire, USA
Latitude & Longitude (WGS84):
43° 4' 19'' North , 72° 16' 31'' West
Latitude & Longitude (decimal):
43.07209,-72.27555
GeoHash:
G#: drst53491
GRN:
N29W39
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Gilsum828 (2017)2.8km
Surry717 (2017)7.1km
Sullivan795 (2017)7.9km
Marlow796 (2017)8.0km
Alstead2,071 (2017)11.0km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Keene Mineral ClubKeene, New Hampshire15km
Mindat Locality ID:
9038
Long-form identifier:
mindat:1:2:9038:7
GUID (UUID V4):
0
Other/historical names associated with this locality:
French Mica Mine; New Hampshire Mica and Mining Co. Mine


Granite pegmatite, Alstead field.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var. Cleavelandite
Formula: Na(AlSi3O8)
ⓘ Almandine
Formula: Fe2+3Al2(SiO4)3
ⓘ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Fluorapatite
Formula: Ca5(PO4)3F
ⓘ Graftonite
Formula: Fe2+Fe2+2(PO4)2
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Quartz
Formula: SiO2
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Sillimanite
Formula: Al2(SiO4)O
ⓘ Spodumene
Formula: LiAlSi2O6
ⓘ Spodumene var. Hiddenite ?
Formula: LiAlSi2O6
ⓘ Spodumene var. Kunzite ?
Formula: LiAlSi2O6

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘGraftonite8.AB.20Fe2+Fe2+2(PO4)2
ⓘFluorapatite8.BN.05Ca5(PO4)3F
ⓘAutunite8.EB.05Ca(UO2)2(PO4)2 · 10-12H2O
Group 9 - Silicates
ⓘAlmandine9.AD.25Fe2+3Al2(SiO4)3
ⓘSillimanite9.AF.05Al2(SiO4)O
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘSpodumene
var. Kunzite ?		9.DA.30LiAlSi2O6
ⓘ9.DA.30LiAlSi2O6
ⓘvar. Hiddenite ?9.DA.30LiAlSi2O6
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Cleavelandite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8

List of minerals for each chemical element

HHydrogen
Hⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
LiLithium
Liⓘ Spodumene var. KunziteLiAlSi2O6
Liⓘ SpodumeneLiAlSi2O6
Liⓘ Spodumene var. HiddeniteLiAlSi2O6
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
BBoron
Bⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oⓘ AlmandineFe32+Al2(SiO4)3
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ FluorapatiteCa5(PO4)3F
Oⓘ GraftoniteFe2+Fe22+(PO4)2
Oⓘ Spodumene var. KunziteLiAlSi2O6
Oⓘ MicroclineK(AlSi3O8)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ SillimaniteAl2(SiO4)O
Oⓘ SpodumeneLiAlSi2O6
Oⓘ Albite var. CleavelanditeNa(AlSi3O8)
Oⓘ Spodumene var. HiddeniteLiAlSi2O6
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ FluorapatiteCa5(PO4)3F
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ Albite var. CleavelanditeNa(AlSi3O8)
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AlmandineFe32+Al2(SiO4)3
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ Spodumene var. KunziteLiAlSi2O6
Alⓘ MicroclineK(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ SillimaniteAl2(SiO4)O
Alⓘ SpodumeneLiAlSi2O6
Alⓘ Albite var. CleavelanditeNa(AlSi3O8)
Alⓘ Spodumene var. HiddeniteLiAlSi2O6
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AlmandineFe32+Al2(SiO4)3
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ Spodumene var. KunziteLiAlSi2O6
Siⓘ MicroclineK(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ SillimaniteAl2(SiO4)O
Siⓘ SpodumeneLiAlSi2O6
Siⓘ Albite var. CleavelanditeNa(AlSi3O8)
Siⓘ Spodumene var. HiddeniteLiAlSi2O6
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
PPhosphorus
Pⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pⓘ FluorapatiteCa5(PO4)3F
Pⓘ GraftoniteFe2+Fe22+(PO4)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Caⓘ FluorapatiteCa5(PO4)3F
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feⓘ AlmandineFe32+Al2(SiO4)3
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ GraftoniteFe2+Fe22+(PO4)2
Feⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
UUranium
Uⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O

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

Sterrett, Douglas Bovard (1923): Mica deposits of the United States. (USGS Bulletin 740).
Megathlin, G.R. (1928) Spodumene and autunite from Alstead, New Hampshire. American Mineralogist: 13: 578-579.
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255 pp.124-125
Meyers, T. R., Stewart, Glenn W. (1956) The Geology of New Hampshire Vol. 3 - Part III - Minerals and Mines. The New Hampshire State Planning and Development Commission, Concord, NH.
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