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Coos Co., New Hampshire, USA

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Detailed Mineral List:

Acanthite
Formula:	Ag₂S
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA






Photo: © 2003 by A. Plante. Acanthite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Actinolite
Formula:	☐{Ca₂}{(Mg,Fe²⁺)₅}(Si₈O₂₂)(OH)₂
Locality:	Pittsburg, Coos Co., New Hampshire, USA







Aegirine
Formula:	NaFe³⁺Si₂O₆
Locality:	Stark, Coos Co., New Hampshire, USA







Albite
Formula:	NaAlSi₃O₈
Localities:	Reported from at least 9 localities in this region.







Albite var: Andesine
Formula:	(Na,Ca)[Al(Si,Al)Si₂O₈]
Locality:	Twin Falls locality, Dixville Notch, Dixville, Coos Co., New Hampshire, USA







Albite var: Oligoclase ?
Formula:	(Na,Ca)[Al(Si,Al)Si₂O₈]
Locality:	Avalanche Brook locality, Hart's Location, Coos Co., New Hampshire, USA - erroneously reported







'Albite-Anorthite Series'
Localities:	Milan Mine (Nay-Fogg Mine; Copperville Mine), Milan, Coos Co., New Hampshire, USA Fischer mine, Shelburne, Coos Co., New Hampshire, USA Dawson Quarry, Stark, Coos Co., New Hampshire, USA White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA ? (more information)








'Allanite'
Localities:	Stark, Coos Co., New Hampshire, USA Dawson Quarry, Stark, Coos Co., New Hampshire, USA








Almandine
Formula:	Fe²⁺₃Al₂(SiO₄)₃
Localities:	Fischer mine, Shelburne, Coos Co., New Hampshire, USA Dalton, Coos Co., New Hampshire, USA Lancaster, Coos Co., New Hampshire, USA







Andalusite
Formula:	Al₂(SiO₄)O
Locality:	Crawford Notch andalusite locality, Hart's Location, Coos Co., New Hampshire, USA







Anglesite
Formula:	PbSO₄
Localities:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA ? (more information)






Photo: © 2011 Peter Cristofono. Anglesite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Anorthite var: Labradorite
Formula:	(Ca,Na)[Al(Al,Si)Si₂O₈]
Locality:	Mill Mountain, Stark, Coos Co., New Hampshire, USA







'Apatite'
Localities:	Kilkenny Granite Quarry, Kilkenny, Coos Co., New Hampshire, USA Dawson Quarry, Stark, Coos Co., New Hampshire, USA








Aragonite
Formula:	CaCO₃
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA






Photo: © 2010 Peter Cristofono. Aragonite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Arfvedsonite ?
Formula:	[Na][Na₂][Fe²⁺₄Fe³⁺]Si₈O₂₂(OH)₂
Locality:	Crawford Notch locality, Nash & Sawyer Location, Coos Co., New Hampshire, USA - erroneously reported







Arsenopyrite
Formula:	FeAsS
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA







Astrophyllite
Formula:	(K,Na)₃(Fe,Mn)₇Ti₂Si₈O₂₄(O,OH)₇
Localities:	Stratford, Coos Co., New Hampshire, USA Stark, Coos Co., New Hampshire, USA South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA







Augite
Formula:	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Locality:	Kilkenny Granite Quarry, Kilkenny, Coos Co., New Hampshire, USA







Aurichalcite
Formula:	(Zn,Cu)₅(CO₃)₂(OH)₆
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA






Photo: © A. Plante, 2003. Aurichalcite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Beryl
Formula:	Be₃Al₂(Si₆O₁₈)
Localities:	Stratford, Coos Co., New Hampshire, USA Diamond Ledges locality, Stark, Coos Co., New Hampshire, USA South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA North Percy Peak locality, Stratford, Coos Co., New Hampshire, USA North Baldface Mountain localities, Bean's Purchase, Coos Co., New Hampshire, USA ? (more information)







Beryl var: Heliodor
Locality:	North Baldface Mountain localities, Bean's Purchase, Coos Co., New Hampshire, USA








'Biotite'
Localities:	Reported from at least 11 localities in this region.








Bornite
Formula:	Cu₅FeS₄
Localities:	White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA Milan Mine (Nay-Fogg Mine; Copperville Mine), Milan, Coos Co., New Hampshire, USA Unnamed Gold mine (Dalton Gold mine), Dalton, Coos Co., New Hampshire, USA Cates Hill, Berlin, Coos Co., New Hampshire, USA School #9 locality, Dalton, Coos Co., New Hampshire, USA ? (more information)







Brochantite
Formula:	Cu₄(SO₄)(OH)₆
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA






Photo: Brochantite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Calcite
Formula:	CaCO₃
Localities:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA Route 110 road cut, Dummer, Coos Co., New Hampshire, USA







Cassiterite
Formula:	SnO₂
Locality:	North Baldface Mountain localities, Bean's Purchase, Coos Co., New Hampshire, USA







Cerussite
Formula:	PbCO₃
Localities:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA ? (more information)






Photo: © A. Plante, 2003. Cerussite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Chalcocite
Formula:	Cu₂S
Localities:	Gorham, Coos Co., New Hampshire, USA Milan Mine (Nay-Fogg Mine; Copperville Mine), Milan, Coos Co., New Hampshire, USA







Chalcopyrite
Formula:	CuFeS₂
Localities:	Reported from at least 10 localities in this region.






Photo: © A. Plante, 2003. Chalcopyrite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Chamosite
Formula:	(Fe²⁺,Mg)₅Al(AlSi₃O₁₀)(OH)₈
Localities:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA






Photo: © A. Plante, 2003. Chamosite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
'Chevkinite'
Formula:	(Ca,Ce,Th)₄(Fe,Mn)₂(Ti,Fe)₃Si₄O₂₂
Locality:	Stark, Coos Co., New Hampshire, USA







'Chlorite Group'
Localities:	Reported from at least 6 localities in this region.







Photo: © 2010 chad cramer. Chlorite Group from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Chrysotile
Formula:	Mg₃(Si₂O₅)(OH)₄
Locality:	Pittsburg, Coos Co., New Hampshire, USA







Clinochlore var: Ripidolite
Formula:	(Mg,Fe,Al)₆(Si,Al)₄O₁₀(OH)₈
Locality:	Gorham, Coos Co., New Hampshire, USA







Copper ?
Formula:	Cu
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA - erroneously reported







Corundum ?
Formula:	Al₂O₃
Locality:	Emery locality, Lancaster, Coos Co., New Hampshire, USA - erroneously reported







Cuprite
Formula:	Cu₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA






Photo: © S.M. Whittemore. Cuprite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Diopside
Formula:	CaMgSi₂O₆
Locality:	Stark, Coos Co., New Hampshire, USA







Epidote
Formula:	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
Localities:	Cambridge, Coos Co., New Hampshire, USA Route 110 road cut, Dummer, Coos Co., New Hampshire, USA Dawson Quarry, Stark, Coos Co., New Hampshire, USA







Fayalite
Formula:	Fe²⁺₂SiO₄
Locality:	Cherry Mountain, Carroll, Coos Co., New Hampshire, USA







'Fayalite-Tephroite Series var: Knebelite'
Formula:	from (Fe_1.5Mn_0.5)₂SiO₄ to (Mn_1.5Fe_0.5)₂SiO₄
Locality:	Long Mountain, Stark, Coos Co., New Hampshire, USA






Photo: © 2009 Peter Cristofono. Knebelite from Long Mountain, Stark, Coos Co., New Hampshire, USA
'Feldspar Group'
Localities:	Reported from at least 12 localities in this region.








Fluorite
Formula:	CaF₂
Localities:	Reported from at least 7 localities in this region.







Galena
Formula:	PbS
Localities:	Reported from at least 9 localities in this region.






Photo: Galena from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Goethite
Formula:	α-Fe³⁺O(OH)
Localities:	Stratford, Coos Co., New Hampshire, USA Diamond Ledges locality, Stark, Coos Co., New Hampshire, USA Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA Lancaster, Coos Co., New Hampshire, USA ? (more information)







Gold
Formula:	Au
Localities:	Reported from at least 6 localities in this region.







Gypsum
Formula:	CaSO₄ · 2H₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA







Hastingsite
Formula:	{Na}{Ca₂}{Fe²⁺₄Fe³⁺}(Al₂Si₆O₂₂)(OH)₂
Locality:	Stark, Coos Co., New Hampshire, USA







Hedenbergite
Formula:	CaFe²⁺Si₂O₆
Localities:	Cherry Mountain, Carroll, Coos Co., New Hampshire, USA Stark, Coos Co., New Hampshire, USA







Hematite
Formula:	Fe₂O₃
Localities:	South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA Stratford, Coos Co., New Hampshire, USA Route 110 road cut, Dummer, Coos Co., New Hampshire, USA







Hemimorphite
Formula:	Zn₄Si₂O₇(OH)₂ · H₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA







'Hornblende'
Localities:	Cherry Mountain, Carroll, Coos Co., New Hampshire, USA Twin Falls locality, Dixville Notch, Dixville, Coos Co., New Hampshire, USA Stark, Coos Co., New Hampshire, USA Cates Hill, Berlin, Coos Co., New Hampshire, USA Kilkenny Granite Quarry, Kilkenny, Coos Co., New Hampshire, USA








Hydrozincite ?
Formula:	Zn₅(CO₃)₂(OH)₆
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA - erroneously reported







Ilmenite ?
Formula:	Fe²⁺TiO₃
Locality:	Emery locality, Lancaster, Coos Co., New Hampshire, USA - erroneously reported







Kaolinite
Formula:	Al₂(Si₂O₅)(OH)₄
Localities:	South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA Stratford, Coos Co., New Hampshire, USA Stark, Coos Co., New Hampshire, USA







'K Feldspar var: Adularia'
Formula:	KAlSi₃O₈
Locality:	Route 110 road cut, Dummer, Coos Co., New Hampshire, USA







Kyanite
Formula:	Al₂(SiO₄)O
Locality:	Berlin, Coos Co., New Hampshire, USA







Laumontite
Formula:	CaAl₂Si₄O₁₂ · 4H₂O
Locality:	Cambridge, Coos Co., New Hampshire, USA






Photo: © 2009 Peter Cristofono. Laumontite from Cambridge, Coos Co., New Hampshire, USA
'Limonite'
Formula:	FeO(OH) · nH₂O
Localities:	Lancaster, Coos Co., New Hampshire, USA Gorham, Coos Co., New Hampshire, USA







Linarite
Formula:	PbCu(SO₄)(OH)₂
Localities:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA ? (more information)






Photo: © Scott Whittemore. Linarite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Magnetite
Formula:	Fe²⁺Fe³⁺₂O₄
Localities:	Reported from at least 7 localities in this region.







Malachite
Formula:	Cu₂(CO₃)(OH)₂
Localities:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA School #9 locality, Dalton, Coos Co., New Hampshire, USA ? (more information)






Photo: © A. Plante, 2003. Malachite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Metazeunerite
Formula:	Cu(UO₂)₂(AsO₄)₂ · 8H₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA







Microcline
Formula:	KAlSi₃O₈
Localities:	Reported from at least 16 localities in this region.







Microcline var: Amazonite
Localities:	Crawford Notch locality, Nash & Sawyer Location, Coos Co., New Hampshire, USA Crawford Notch Pegmatite locality, Hart's Location, Coos Co., New Hampshire, USA







Photo: Amazonite from North Baldface Mountain localities, Bean's Purchase, Coos Co., New Hampshire, USA
Molybdenite
Formula:	MoS₂
Localities:	Molybdenite locality, Berlin, Coos Co., New Hampshire, USA Stratford, Coos Co., New Hampshire, USA Whitefield, Coos Co., New Hampshire, USA Diamond Ledges locality, Stark, Coos Co., New Hampshire, USA







'Monazite'
Locality:	Stratford, Coos Co., New Hampshire, USA








Monazite-(Ce)
Formula:	(Ce,La,Nd,Th)(PO₄)
Locality:	South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA







Muscovite
Formula:	KAl₂(AlSi₃O₁₀)(OH)₂
Localities:	Reported from at least 18 localities in this region.






Photo: © Rob Lavinsky. Muscovite from Stratford, Coos Co., New Hampshire, USA
Muscovite var: Sericite
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA








Orthoclase
Formula:	KAlSi₃O₈
Locality:	Dawson Quarry, Stark, Coos Co., New Hampshire, USA







Phenakite
Formula:	Be₂SiO₄
Localities:	North Baldface Mountain localities, Bean's Purchase, Coos Co., New Hampshire, USA Stratford, Coos Co., New Hampshire, USA North Percy Peak locality, Stratford, Coos Co., New Hampshire, USA






Photo: © 2009 Peter Cristofono. Phenakite from North Percy Peak locality, Stratford, Coos Co., New Hampshire, USA
Posnjakite
Formula:	Cu₄(SO₄)(OH)₆ · H₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA






Photo: © Scott Whittemore. Posnjakite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Pyrite
Formula:	FeS₂
Localities:	Reported from at least 12 localities in this region.






Photo: © 2005 Peter Cristofono. Pyrite from Cambridge, Coos Co., New Hampshire, USA
Pyrolusite ?
Formula:	MnO₂
Locality:	White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA - erroneously reported







Pyrrhotite
Formula:	Fe_1-xS (x = 0 to 0.17)
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA







Quartz
Formula:	SiO₂
Localities:	Reported from at least 34 localities in this region.






Photo: © Joseph A. Freilich. Quartz from Cambridge, Coos Co., New Hampshire, USA
Quartz var: Amethyst
Formula:	SiO₂
Localities:	Reported from at least 16 localities in this region.






Photo: Amethyst from Long Mountain, Stark, Coos Co., New Hampshire, USA
Quartz var: Citrine
Localities:	Gorham, Coos Co., New Hampshire, USA Stratford, Coos Co., New Hampshire, USA Stark, Coos Co., New Hampshire, USA South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA Diamond Ledges locality, Stark, Coos Co., New Hampshire, USA







Photo: © 2009 Peter Cristofono. Citrine from South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA
Quartz var: Milky Quartz
Localities:	Zealand River locality, Carroll, Coos Co., New Hampshire, USA Higgins Mountain locality, Kilkenny, Coos Co., New Hampshire, USA Fifield Brook locality, Kilkenny, Coos Co., New Hampshire, USA








Quartz var: Smoky Quartz
Formula:	SiO₂
Localities:	Reported from at least 9 localities in this region.






Photo: © Scott Maier. Smoky Quartz from South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA
Ramsbeckite
Formula:	(Cu,Zn)₁₅(SO₄)₄(OH)₂₂ · 6H₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA






Photo: © Scott Whittemore. Ramsbeckite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Riebeckite
Formula:	◻[Na₂][Fe²⁺₃Fe³⁺₂]Si₈O₂₂(OH)₂
Localities:	Higgins Mountain locality, Kilkenny, Coos Co., New Hampshire, USA Fifield Brook locality, Kilkenny, Coos Co., New Hampshire, USA Stark, Coos Co., New Hampshire, USA







Rosasite ?
Formula:	(Cu,Zn)₂(CO₃)(OH)₂
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA - erroneously reported







Rutile
Formula:	TiO₂
Localities:	Pittsburg, Coos Co., New Hampshire, USA Route 110 road cut, Dummer, Coos Co., New Hampshire, USA Long Mountain, Stark, Coos Co., New Hampshire, USA Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA ? (more information)






Photo: © 2011 Peter Cristofono. Rutile from Long Mountain, Stark, Coos Co., New Hampshire, USA
Schorl
Formula:	Na(Fe²⁺₃)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Localities:	South Percy Peak locality, Stratford, Coos Co., New Hampshire, USA Stratford, Coos Co., New Hampshire, USA North Baldface Mountain localities, Bean's Purchase, Coos Co., New Hampshire, USA ? (more information)







Schulenbergite
Formula:	(Cu,Zn)₇(SO₄,CO₃)₂(OH)₁₀ · 3H₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA






Photo: © 2011 Peter Cristofono. Schulenbergite from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
'Serpentine Group'
Formula:	D₂[Si₂O₅](OH)4 + or - nH₂O
Locality:	Pittsburg, Coos Co., New Hampshire, USA







Serpierite
Formula:	Ca(Cu,Zn)₄(SO₄)₂(OH)₆ · 3H₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA







Siderite
Formula:	FeCO₃
Localities:	Reported from at least 6 localities in this region.







Silver
Formula:	Ag
Localities:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA White Mountain Silver & Lead mine (Shelburne Lead mine), Shelburne, Coos Co., New Hampshire, USA Stevens prospect, Shelburne, Coos Co., New Hampshire, USA Crane Silver mine, Dalton, Coos Co., New Hampshire, USA School #9 locality, Dalton, Coos Co., New Hampshire, USA ? (more information)






Photo: © 2003 by A. Plante. Silver from Mascot Mine, Gorham, Coos Co., New Hampshire, USA
Smithsonite
Formula:	ZnCO₃
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA







Sphalerite
Formula:	ZnS
Localities:	Reported from at least 7 localities in this region.







Talc
Formula:	Mg₃(Si₄O₁₀)(OH)₂
Locality:	Lancaster, Coos Co., New Hampshire, USA







Titanite
Formula:	CaTi(SiO₄)O
Localities:	Route 110 road cut, Dummer, Coos Co., New Hampshire, USA Kilkenny Granite Quarry, Kilkenny, Coos Co., New Hampshire, USA







Topaz
Formula:	Al₂(SiO₄)(F,OH)₂
Localities:	Reported from at least 9 localities in this region.






Photo: © 2002 John H. Betts. Topaz from Green Ledges localities, Milan, Coos Co., New Hampshire, USA
Tremolite
Formula:	☐{Ca₂}{Mg₅}(Si₈O₂₂)(OH)₂
Locality:	Cates Hill, Berlin, Coos Co., New Hampshire, USA







'Uvite'
Formula:	Ca(Mg₃)MgAl₅(Si₆O₁₈)(BO₃)₃(OH)₃(F/OH)
Locality:	Diamond Ledges locality, Stark, Coos Co., New Hampshire, USA







Wroewolfeite ?
Formula:	Cu₄(SO₄)(OH)₆ · 2H₂O
Locality:	Mascot Mine (Gorham Lead mine; Galena King mine), Gorham, Coos Co., New Hampshire, USA - erroneously reported







'Zinnwaldite'
Formula:	KLiFe²⁺Al(AlSi₃O₁₀)(F,OH)₂
Localities:	North Percy Peak locality, Stratford, Coos Co., New Hampshire, USA Stratford, Coos Co., New Hampshire, USA






Photo: © 2009 Peter Cristofono. Zinnwaldite from North Percy Peak locality, Stratford, Coos Co., New Hampshire, USA

100 entries listed. 74 valid minerals.

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