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Fletcher Mine, Groton, Grafton County, New Hampshire, USAi
Regional Level Types
Fletcher MineMine
GrotonTown
Grafton CountyCounty
New HampshireState
USACountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
43° 45' 34'' North , 71° 49' 39'' West
Latitude & Longitude (decimal):
43.75972,-71.82750
GeoHash:
G#: drubvw0yc
GRN:
N30W38
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Rumney1,576 (2017)5.2km
Groton486 (2017)6.5km
Hebron489 (2017)7.5km
Dorchester376 (2017)9.7km
Plymouth4,456 (2017)11.2km
Mindat Locality ID:
6343
Long-form identifier:
mindat:1:2:6343:5
GUID (UUID V4):
755f8026-0445-4f6e-b2d2-4756563e1610
Other/historical names associated with this locality:
Fletcher Pegmatite


A former open pit mica and feldspar mine.

Mineralization is granite pegmatite, Grafton field. Located near the village of North Groton. (Has produced remarkable examples of hydroxylherderite, strengite, phosphosiderite, strunzite and other pegmatite phosphates.)

Local rocks include rocks of the Littleton Formation, Upper unnamed member.

PLEASE TAKE NOTICE: The Fletcher Mine has been closed to the public since the 1970s. The property is posted against tresspassers. Prosecution will be the result of trespassing. Adjoining property with mines is also privately owned. Please respect wishes of property owners concerned with your safety in mind.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


39 valid minerals. 1 (TL) - type locality of valid minerals. 4 erroneous literature entries.

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Almandine
Formula: Fe2+3Al2(SiO4)3
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
ⓘ Beraunite
Formula: Fe3+6(PO4)4O(OH)4 · 6H2O
ⓘ Bermanite
Formula: Mn2+Mn3+2(PO4)2(OH)2 · 4H2O
ⓘ Bertrandite
Formula: Be4(Si2O7)(OH)2
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Brazilianite
Formula: NaAl3(PO4)2(OH)4
ⓘ Childrenite
Formula: Fe2+Al(PO4)(OH)2 · H2O
ⓘ Dufrénite
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Description: Mis-identified rockbridgeite
ⓘ Eosphorite
Formula: Mn2+Al(PO4)(OH)2 · H2O
ⓘ Frondelite
Formula: Mn2+Fe3+4(PO4)3(OH)5
ⓘ Graftonite
Formula: Fe2+Fe2+2(PO4)2
ⓘ Herderite
Formula: CaBe(PO4)F
ⓘ Heterosite
Formula: (Fe3+,Mn3+)PO4
ⓘ Hureaulite
Formula: Mn2+5(PO3OH)2(PO4)2 · 4H2O
ⓘ Hydroxylherderite
Formula: CaBe(PO4)(OH)
ⓘ Jahnsite-(CaMnFe) (TL)
Formula: {Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Type Locality:
ⓘ Jahnsite-(CaMnMg)
Formula: {Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O
ⓘ Laueite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
ⓘ Leucophosphite
Formula: KFe3+2(PO4)2(OH) · 2H2O
ⓘ Ludlamite
Formula: Fe2+3(PO4)2 · 4H2O
ⓘ Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6H2O
ⓘ Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Paravauxite
Formula: Fe2+Al2(PO4)2(OH)2 · 8H2O
Description: No data.
ⓘ Phosphosiderite
Formula: FePO4 · 2H2O
ⓘ Purpurite
Formula: Mn3+(PO4)
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Smoky Quartz
Formula: SiO2
ⓘ Rockbridgeite
Formula: Fe2+Fe3+4(PO4)3(OH)5
ⓘ Sillimanite
Formula: Al2(SiO4)O
ⓘ Stewartite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
ⓘ Strengite
Formula: FePO4 · 2H2O
ⓘ Strunzite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
ⓘ Tavorite
Formula: LiFe3+(PO4)(OH)
ⓘ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
ⓘ Triphylite
Formula: LiFe2+PO4
ⓘ Triplite ?
Formula: Mn2+2(PO4)F
Description: No data. Unlikely for both an iron-rich and manganese-rich primary phosphate to be present.
ⓘ Vivianite
Formula: Fe2+Fe2+2(PO4)2 · 8H2O
ⓘ Wolfeite ?
Formula: Fe2+2(PO4)(OH)
Description: No data.
ⓘ Xanthoxenite
Formula: Ca4Fe3+2(PO4)4(OH)2 · 3H2O

Gallery:

Mn2+Mn3+2(PO4)2(OH)2 · 4H2Oⓘ Bermanite
(Fe3+,Mn3+)PO4ⓘ Heterosite
Mn2+5(PO3OH)2(PO4)2 · 4H2Oⓘ Hureaulite
CaBe(PO4)(OH)ⓘ Hydroxylherderite
KFe3+2(PO4)2(OH) · 2H2Oⓘ Leucophosphite
FePO4 · 2H2Oⓘ Phosphosiderite
Fe2+Fe3+4(PO4)3(OH)5ⓘ Rockbridgeite
Mn2+Fe3+2(PO4)2(OH)2 · 8H2Oⓘ Stewartite
FePO4 · 2H2Oⓘ Strengite

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘQuartz
var. Smoky Quartz		4.DA.05SiO2
ⓘ4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘPurpurite ?8.AB.10Mn3+(PO4)
ⓘHeterosite8.AB.10(Fe3+,Mn3+)PO4
ⓘTriphylite8.AB.10LiFe2+PO4
ⓘGraftonite8.AB.20Fe2+Fe2+2(PO4)2
ⓘHydroxylherderite8.BA.10CaBe(PO4)(OH)
ⓘHerderite ?8.BA.10CaBe(PO4)F
ⓘTavorite8.BB.05LiFe3+(PO4)(OH)
ⓘTriplite ?8.BB.10Mn2+2(PO4)F
ⓘWolfeite ?8.BB.15Fe2+2(PO4)(OH)
ⓘRockbridgeite8.BC.10Fe2+Fe3+4(PO4)3(OH)5
ⓘFrondelite8.BC.10Mn2+Fe3+4(PO4)3(OH)5
ⓘBrazilianite8.BK.05NaAl3(PO4)2(OH)4
ⓘHureaulite8.CB.10Mn2+5(PO3OH)2(PO4)2 · 4H2O
ⓘPhosphosiderite8.CD.05FePO4 · 2H2O
ⓘStrengite8.CD.10FePO4 · 2H2O
ⓘLudlamite8.CD.20Fe2+3(PO4)2 · 4H2O
ⓘVivianite8.CE.40Fe2+Fe2+2(PO4)2 · 8H2O
ⓘBermanite8.DC.20Mn2+Mn3+2(PO4)2(OH)2 · 4H2O
ⓘStrunzite8.DC.25Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
ⓘBeraunite8.DC.27Fe3+6(PO4)4O(OH)4 · 6H2O
ⓘParavauxite8.DC.30Fe2+Al2(PO4)2(OH)2 · 8H2O
ⓘLaueite8.DC.30Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
ⓘStewartite8.DC.30Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
ⓘEosphorite8.DD.20Mn2+Al(PO4)(OH)2 · H2O
ⓘChildrenite ?8.DD.20Fe2+Al(PO4)(OH)2 · H2O
ⓘLeucophosphite8.DH.10KFe3+2(PO4)2(OH) · 2H2O
ⓘJahnsite-(CaMnFe) (TL)8.DH.15{Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O
ⓘJahnsite-(CaMnMg)8.DH.15{Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O
ⓘXanthoxenite8.DH.40Ca4Fe3+2(PO4)4(OH)2 · 3H2O
ⓘDufrénite ?8.DK.15Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
ⓘTorbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
ⓘAutunite8.EB.05Ca(UO2)2(PO4)2 · 10-12H2O
ⓘMetatorbernite8.EB.10Cu(UO2)2(PO4)2 · 8H2O
ⓘMeta-autunite8.EB.10Ca(UO2)2(PO4)2 · 6H2O
Group 9 - Silicates
ⓘAlmandine9.AD.25Fe2+3Al2(SiO4)3
ⓘSillimanite9.AF.05Al2(SiO4)O
ⓘBertrandite9.BD.05Be4(Si2O7)(OH)2
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

List of minerals for each chemical element

HHydrogen
Hⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hⓘ BerauniteFe63+(PO4)4O(OH)4 · 6H2O
Hⓘ BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Hⓘ BertranditeBe4(Si2O7)(OH)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ BrazilianiteNaAl3(PO4)2(OH)4
Hⓘ ChildreniteFe2+Al(PO4)(OH)2 · H2O
Hⓘ DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Hⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Hⓘ FrondeliteMn2+Fe43+(PO4)3(OH)5
Hⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Hⓘ HydroxylherderiteCaBe(PO4)(OH)
Hⓘ Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Hⓘ Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
Hⓘ LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Hⓘ LeucophosphiteKFe23+(PO4)2(OH) · 2H2O
Hⓘ LudlamiteFe32+(PO4)2 · 4H2O
Hⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Hⓘ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
Hⓘ PhosphosideriteFePO4 · 2H2O
Hⓘ RockbridgeiteFe2+Fe43+(PO4)3(OH)5
Hⓘ StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Hⓘ StrengiteFePO4 · 2H2O
Hⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Hⓘ TavoriteLiFe3+(PO4)(OH)
Hⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Hⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Hⓘ WolfeiteFe22+(PO4)(OH)
Hⓘ XanthoxeniteCa4Fe23+(PO4)4(OH)2 · 3H2O
LiLithium
Liⓘ TavoriteLiFe3+(PO4)(OH)
Liⓘ TriphyliteLiFe2+PO4
BeBeryllium
Beⓘ BertranditeBe4(Si2O7)(OH)2
Beⓘ BerylBe3Al2(Si6O18)
Beⓘ HerderiteCaBe(PO4)F
Beⓘ HydroxylherderiteCaBe(PO4)(OH)
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oⓘ AlmandineFe32+Al2(SiO4)3
Oⓘ BerauniteFe63+(PO4)4O(OH)4 · 6H2O
Oⓘ BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Oⓘ BertranditeBe4(Si2O7)(OH)2
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ BrazilianiteNaAl3(PO4)2(OH)4
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ ChildreniteFe2+Al(PO4)(OH)2 · H2O
Oⓘ DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Oⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Oⓘ FrondeliteMn2+Fe43+(PO4)3(OH)5
Oⓘ GraftoniteFe2+Fe22+(PO4)2
Oⓘ HerderiteCaBe(PO4)F
Oⓘ Heterosite(Fe3+,Mn3+)PO4
Oⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Oⓘ HydroxylherderiteCaBe(PO4)(OH)
Oⓘ Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Oⓘ Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
Oⓘ LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Oⓘ LeucophosphiteKFe23+(PO4)2(OH) · 2H2O
Oⓘ LudlamiteFe32+(PO4)2 · 4H2O
Oⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Oⓘ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Oⓘ MicroclineK(AlSi3O8)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
Oⓘ PhosphosideriteFePO4 · 2H2O
Oⓘ PurpuriteMn3+(PO4)
Oⓘ QuartzSiO2
Oⓘ RockbridgeiteFe2+Fe43+(PO4)3(OH)5
Oⓘ SillimaniteAl2(SiO4)O
Oⓘ Quartz var. Smoky QuartzSiO2
Oⓘ StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Oⓘ StrengiteFePO4 · 2H2O
Oⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Oⓘ TavoriteLiFe3+(PO4)(OH)
Oⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Oⓘ TriphyliteLiFe2+PO4
Oⓘ TripliteMn22+(PO4)F
Oⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Oⓘ WolfeiteFe22+(PO4)(OH)
Oⓘ XanthoxeniteCa4Fe23+(PO4)4(OH)2 · 3H2O
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ HerderiteCaBe(PO4)F
Fⓘ TripliteMn22+(PO4)F
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ BrazilianiteNaAl3(PO4)2(OH)4
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
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ⓘ BrazilianiteNaAl3(PO4)2(OH)4
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ ChildreniteFe2+Al(PO4)(OH)2 · H2O
Alⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Alⓘ MicroclineK(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
Alⓘ SillimaniteAl2(SiO4)O
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AlmandineFe32+Al2(SiO4)3
Siⓘ BertranditeBe4(Si2O7)(OH)2
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ MicroclineK(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SillimaniteAl2(SiO4)O
Siⓘ Quartz var. Smoky QuartzSiO2
PPhosphorus
Pⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pⓘ BerauniteFe63+(PO4)4O(OH)4 · 6H2O
Pⓘ BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Pⓘ BrazilianiteNaAl3(PO4)2(OH)4
Pⓘ ChildreniteFe2+Al(PO4)(OH)2 · H2O
Pⓘ DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Pⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Pⓘ FrondeliteMn2+Fe43+(PO4)3(OH)5
Pⓘ GraftoniteFe2+Fe22+(PO4)2
Pⓘ HerderiteCaBe(PO4)F
Pⓘ Heterosite(Fe3+,Mn3+)PO4
Pⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Pⓘ HydroxylherderiteCaBe(PO4)(OH)
Pⓘ Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Pⓘ Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
Pⓘ LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Pⓘ LeucophosphiteKFe23+(PO4)2(OH) · 2H2O
Pⓘ LudlamiteFe32+(PO4)2 · 4H2O
Pⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Pⓘ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Pⓘ ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
Pⓘ PhosphosideriteFePO4 · 2H2O
Pⓘ PurpuriteMn3+(PO4)
Pⓘ RockbridgeiteFe2+Fe43+(PO4)3(OH)5
Pⓘ StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Pⓘ StrengiteFePO4 · 2H2O
Pⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Pⓘ TavoriteLiFe3+(PO4)(OH)
Pⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Pⓘ TriphyliteLiFe2+PO4
Pⓘ TripliteMn22+(PO4)F
Pⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Pⓘ WolfeiteFe22+(PO4)(OH)
Pⓘ XanthoxeniteCa4Fe23+(PO4)4(OH)2 · 3H2O
SSulfur
Sⓘ ArsenopyriteFeAsS
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ LeucophosphiteKFe23+(PO4)2(OH) · 2H2O
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Caⓘ DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Caⓘ HerderiteCaBe(PO4)F
Caⓘ HydroxylherderiteCaBe(PO4)(OH)
Caⓘ Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Caⓘ Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
Caⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Caⓘ XanthoxeniteCa4Fe23+(PO4)4(OH)2 · 3H2O
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MnManganese
Mnⓘ BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Mnⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Mnⓘ FrondeliteMn2+Fe43+(PO4)3(OH)5
Mnⓘ Heterosite(Fe3+,Mn3+)PO4
Mnⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Mnⓘ Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Mnⓘ Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
Mnⓘ LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Mnⓘ PurpuriteMn3+(PO4)
Mnⓘ StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Mnⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Mnⓘ TripliteMn22+(PO4)F
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ AlmandineFe32+Al2(SiO4)3
Feⓘ BerauniteFe63+(PO4)4O(OH)4 · 6H2O
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ ChildreniteFe2+Al(PO4)(OH)2 · H2O
Feⓘ DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Feⓘ FrondeliteMn2+Fe43+(PO4)3(OH)5
Feⓘ GraftoniteFe2+Fe22+(PO4)2
Feⓘ Heterosite(Fe3+,Mn3+)PO4
Feⓘ Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Feⓘ Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
Feⓘ LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Feⓘ LeucophosphiteKFe23+(PO4)2(OH) · 2H2O
Feⓘ LudlamiteFe32+(PO4)2 · 4H2O
Feⓘ ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
Feⓘ PhosphosideriteFePO4 · 2H2O
Feⓘ RockbridgeiteFe2+Fe43+(PO4)3(OH)5
Feⓘ StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Feⓘ StrengiteFePO4 · 2H2O
Feⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Feⓘ TavoriteLiFe3+(PO4)(OH)
Feⓘ TriphyliteLiFe2+PO4
Feⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Feⓘ WolfeiteFe22+(PO4)(OH)
Feⓘ XanthoxeniteCa4Fe23+(PO4)4(OH)2 · 3H2O
CuCopper
Cuⓘ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Cuⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
AsArsenic
Asⓘ ArsenopyriteFeAsS
UUranium
Uⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Uⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Uⓘ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Uⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O

Other Databases

Link to USGS MRDS:10223198

Other Regions, Features and Areas containing this locality

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

(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0330090080
McNair, A. H.; Burnett, C. B.; Headley, J. B., Jr. (1943). Fletcher mica mine, Groton, New Hampshire, USGS Open-File Report 43-63.
Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.
Cameron, E.N., Larrabee, D.M., McNair, A.H., et al (1954), USGS Professional Paper 255.
Meyers, T.R., Stewart, G.W. (1956) The Geology of New Hampshire - Part III: Minerals and Mines. New Hampshire Department of Resources and Economic Development.
Moore, Paul Brian, Ito, Jun (1978) I. Whiteite, a new species, and a proposed nomenclature for the jahnsite-whiteite complex series. II. New data on xanthoxenite. III. Salmonsite discredited. Mineralogical Magazine, 42 (323) 309-323 doi:10.1180/minmag.1978.042.323.01
Nashua Mineralogical Society Display Catalog (1995).
Korbel, Petr, Novak, Milan (1999) Minerals Encyclopaedia. Rebo Productions.p.163
Rocks & Minerals (2005), New Hampshire Mineral Locality Index: 80: 242-261.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
www.mindat.org (n.d.) http://www.mindat.org/mesg-7-377502.html
Kreinik, Susanna T. (2022) Phosphate Mineralogy and Paragenesis of the Fletcher Pegmatite, North Groton, New Hampshire. M.S. Thesis, 3039. University of New Orleans. 1-105
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