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Franconia Iron Mine, Ore Hill, Sugar Hill, Grafton County, New Hampshire, USAi
Regional Level Types
Franconia Iron MineMine
Ore HillHill
Sugar HillTownship
Grafton CountyCounty
New HampshireState
USACountry

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Latitude & Longitude (WGS84):
44° North , 71° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
GRN:
N30W38
Type:
Mine
KΓΆppen climate type:
Dfb : Warm-summer humid continental climate
Mindat Locality ID:
3938
Long-form identifier:
mindat:1:2:3938:6
GUID (UUID V4):
bafede5a-99ef-44db-8d78-13d4c990e46e
Other/historical names associated with this locality:
Franconia Mine


An iron mine located on Ore Hill near Sugar Hill and Franconia. Started about 1807 and closed 1870. Hydrothermal vein deposit. Ore is in Ammonoosuc volcanics. Workings were up to 150 feet deep and included several prospect pits, adits, and shafts peripheral to the main open-cut with tunnels mine.

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


25 valid minerals.

Detailed Mineral List:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ Albite var. Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
β“˜ Almandine
Formula: Fe2+3Al2(SiO4)3
β“˜ Andradite
Formula: Ca3Fe3+2(SiO4)3
Colour: red
β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Arsenopyrite var. Danaite
Formula: (Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS
β“˜ 'Asbestos'
β“˜ 'Asbestos var. Mountain Leather'
β“˜ Azurite
Formula: Cu3(CO3)2(OH)2
β“˜ Calcite
Formula: CaCO3
β“˜ Calcite var. Argentine
Formula: CaCO3
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ Ferro-hornblende
Formula: ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2
β“˜ Hematite ?
Formula: Fe2O3
β“˜ Ilmenite
Formula: Fe2+TiO3
β“˜ Kyanite
Formula: Al2(SiO4)O
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ Molybdenite
Formula: MoS2
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ Scheelite
Formula: Ca(WO4)
β“˜ Staurolite
Formula: Fe2+2Al9Si4O23(OH)
β“˜ 'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
β“˜ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
β“˜ Zoisite
Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Molybdenite2.EA.30MoS2
β“˜Pyrite2.EB.05aFeS2
β“˜Arsenopyrite
var. Danaite		2.EB.20(Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS
β“˜2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Hematite ?4.CB.05Fe2O3
β“˜Ilmenite4.CB.05Fe2+TiO3
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite
var. Argentine		5.AB.05CaCO3
β“˜5.AB.05CaCO3
β“˜Azurite5.BA.05Cu3(CO3)2(OH)2
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
β“˜Almandine9.AD.25Fe2+3Al2(SiO4)3
β“˜Andradite9.AD.25Ca3Fe3+2(SiO4)3
β“˜Kyanite9.AF.15Al2(SiO4)O
β“˜Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Zoisite9.BG.10(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
β“˜Tremolite9.DE.10β—»Ca2Mg5(Si8O22)(OH)2
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Ferro-hornblende9.DE.10β—»Ca2(Fe2+4Al)(Si7Al)O22(OH)2
β“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
β“˜Albite
var. Oligoclase		9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
β“˜9.FA.35Na(AlSi3O8)
Unclassified
β“˜'Asbestos'-
β“˜'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] Β· nH2O
β“˜'Asbestos
var. Mountain Leather'		-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ AzuriteCu3(CO3)2(OH)2
Hβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ PrehniteCa2Al2Si3O10(OH)2
Hβ“˜ StauroliteFe22+Al9Si4O23(OH)
Hβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Hβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Hβ“˜ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
CCarbon
Cβ“˜ AzuriteCu3(CO3)2(OH)2
Cβ“˜ CalciteCaCO3
Cβ“˜ MalachiteCu2(CO3)(OH)2
Cβ“˜ Calcite var. ArgentineCaCO3
OOxygen
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ AndraditeCa3Fe23+(SiO4)3
Oβ“˜ AzuriteCu3(CO3)2(OH)2
Oβ“˜ AlmandineFe32+Al2(SiO4)3
Oβ“˜ CalciteCaCO3
Oβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Oβ“˜ HematiteFe2O3
Oβ“˜ IlmeniteFe2+TiO3
Oβ“˜ KyaniteAl2(SiO4)O
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Oβ“˜ PrehniteCa2Al2Si3O10(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ ScheeliteCa(WO4)
Oβ“˜ StauroliteFe22+Al9Si4O23(OH)
Oβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Oβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oβ“˜ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Oβ“˜ Calcite var. ArgentineCaCO3
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
MgMagnesium
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ AlmandineFe32+Al2(SiO4)3
Alβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Alβ“˜ KyaniteAl2(SiO4)O
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Alβ“˜ PrehniteCa2Al2Si3O10(OH)2
Alβ“˜ StauroliteFe22+Al9Si4O23(OH)
Alβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Alβ“˜ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
SiSilicon
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ AndraditeCa3Fe23+(SiO4)3
Siβ“˜ AlmandineFe32+Al2(SiO4)3
Siβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Siβ“˜ KyaniteAl2(SiO4)O
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Siβ“˜ PrehniteCa2Al2Si3O10(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ StauroliteFe22+Al9Si4O23(OH)
Siβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Siβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siβ“˜ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ MolybdeniteMoS2
Sβ“˜ PyriteFeS2
Sβ“˜ Arsenopyrite var. Danaite(Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS
KPotassium
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ AndraditeCa3Fe23+(SiO4)3
Caβ“˜ CalciteCaCO3
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Caβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Caβ“˜ PrehniteCa2Al2Si3O10(OH)2
Caβ“˜ ScheeliteCa(WO4)
Caβ“˜ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caβ“˜ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Caβ“˜ Calcite var. ArgentineCaCO3
TiTitanium
Tiβ“˜ IlmeniteFe2+TiO3
FeIron
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ AndraditeCa3Fe23+(SiO4)3
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ AlmandineFe32+Al2(SiO4)3
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ Ferro-hornblende◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Feβ“˜ HematiteFe2O3
Feβ“˜ IlmeniteFe2+TiO3
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ PyriteFeS2
Feβ“˜ StauroliteFe22+Al9Si4O23(OH)
Feβ“˜ Arsenopyrite var. Danaite(Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS
CoCobalt
Coβ“˜ Arsenopyrite var. Danaite(Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS
CuCopper
Cuβ“˜ AzuriteCu3(CO3)2(OH)2
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ MalachiteCu2(CO3)(OH)2
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
Asβ“˜ Arsenopyrite var. Danaite(Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS
MoMolybdenum
Moβ“˜ MolybdeniteMoS2
WTungsten
Wβ“˜ ScheeliteCa(WO4)

Other Regions, Features and Areas containing this locality

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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

Gibbs, George (1810). Observations on the Franconia Iron Works (American Mineralogical Journal, Jan. 1810).
Maclure, William (1817). Observations on the Geology of the United States of America (Philadelphia: printed for the author by Abraham Small), p. 32.
Verrow, Harold (1942). Franconia Iron Mine, Lisbon, N.H. (Rocks & Minerals: 17:136-139)
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.pp.85-86
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