Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Walpole, Cheshire Co., New Hampshire, USA

Oldest recorded age at locality: 306.6
Youngest recorded age at locality: 300.2

mindat Locality ID: 28188
mindat URL: http://www.mindat.org/loc-28188.html

Tectonic Settings:

Total number of sublocalities beneath "Walpole, Cheshire Co., New Hampshire, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Chickering Mine
Fall Mountain
Houghton's Graphite Mine
Howe Ledge Beryl Prospect
Lane Construction Corp. Quarry (Cold River Materials Quarry; Walpole Quarry; Whitcomb Quarry)

Latitude: 43°6'58"N
Longitude: 72°24'16"W
Decimal Degree (lat, lon): 43.116111111111,-72.404444444444

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Alunite	Amorphous	Amphibole	Andalusite	Apatite	Arseniosiderite	Arsenopyrite	Arthurite	Autunite	Beraunite
Beryl	Beryllonite	Calcite	Childrenite	Clay	Columbite	Diaspore	Feldspar	Garnet	Gypsum
Kaolinite	Laueite	Meta-autunite	Mica	Nickeline	None	Not in a structural group	Olivine	Pyrite	Pyroxene
Quartz	Rockbridgeite	Rutile	Souzalite	Sphalerite	Staurolite	Strunzite	Symplesite	Tourmaline	Vivianite
Wardite	Zircon

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al As B Be C Ca F Fe H K Li Mg Mn Na Nb O P S Si Sn Sr U Zn Zr

Elements from minerals reported directly at this locality: Al Ca Fe H K Li Mg O S Si

Structural Groups for minerals in this locality:
Alunite Amorphous Amphibole Andalusite Apatite Arseniosiderite Arsenopyrite Arthurite Autunite Beraunite
Beryl Beryllonite Calcite Childrenite Clay Columbite Diaspore Feldspar Garnet Gypsum
Kaolinite Laueite Meta-autunite Mica Nickeline None Not in a structural group Olivine Pyrite Pyroxene
Quartz Rockbridgeite Rutile Souzalite Sphalerite Staurolite Strunzite Symplesite Tourmaline Vivianite
Wardite Zircon

58 IMA Minerals at location:

Albite ()*	Almandine ()*	Andalusite ()*	Arsenopyrite ()*	Augite ()*
Autunite ()*	Beraunite ()*	Beryl ()*	Beryllonite ()*	Brazilianite ()*
Cassiterite ()*	Childrenite ()*	Columbite-(Mn) ()*	Cummingtonite ()*	Diadochite ()*
Diopside ()*	Elbaite ()*	Ferrisicklerite ()*	Fluorapatite ()*	Goethite ()*
Gormanite ()*	Goyazite ()*	Graphite ()*	Gypsum ()*	Heterosite ()*
Kalinite ()*	Kaolinite ()*	Kyanite ()*	Laueite ()*	Ludlamite ()*
Meta-autunite ()*	Metavivianite ()*	Microcline ()*	Mitridatite ()*	Montebrasite ()*
Moraesite ()*	Muscovite ()*	Opal ()*	Paravauxite ()*	Petalite ()*
Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Rhodochrosite ()*	Rockbridgeite ()*
Schorl ()*	Siderite ()*	Sillimanite ()*	Sphalerite ()*	Spodumene ()*
Staurolite ()*	Strunzite ()*	Tremolite ()*	Triphylite ()*	Vivianite ()*
Wardite ()*	Whitmoreite ()*	Zircon ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	306.6	300.2	1	242001	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	306.6	300.2	1	242001	2353
Andalusite ()*	Andalusite	Al₂SiO₅			1	242002	1310
Arsenopyrite ()*	Arsenopyrite	FeAsS	306.6	300.2	1	242001	9052
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	306.6	300.2	0		2060
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O	306.6	300.2	1	242001	1272
Beraunite ()*	Beraunite	Fe³⁺₆(PO₄)₄O(OH)₄·6H₂O	306.6	300.2	1	242001	136
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	306.6	300.2	2	242001,242004	4286
Beryllonite ()*	Beryllonite	NaBe(PO₄)	306.6	300.2	1	242001	47
Brazilianite ()*	Not in a structural group	NaAl₃(PO₄)₂(OH)₄	306.6	300.2	1	242001	59
Cassiterite ()*	Rutile	SnO₂	306.6	300.2	1	242001	5171
Childrenite ()*	Childrenite	Fe²⁺Al(PO₄)(OH)₂·H₂O	306.6	300.2	1	242001	93
Columbite-(Mn) ()*	Columbite	Mn²⁺Nb₂O₆	306.6	300.2	1	242001	289
Cummingtonite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	306.6	300.2	0		327
Diadochite ()*	Amorphous	Fe³⁺₂(PO₄)(SO₄)(OH)·6H₂O	306.6	300.2	1	242001	81
Diopside ()*	Pyroxene	CaMgSi₂O₆	306.6	300.2	0		4135
Elbaite ()*	Tourmaline	Na(Al_1.5Li_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	306.6	300.2	1	242001	520
Ferrisicklerite ()*	Olivine	Li_1-x(Fe³⁺,Mn²⁺)(PO₄)	306.6	300.2	1	242001	108
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	306.6	300.2	1	242001	2740
Goethite ()*	Diaspore	FeO(OH)	306.6	300.2	1	242001	7437
Gormanite ()*	Souzalite	Fe²⁺₃Al₄(PO₄)₄(OH)₆·2H₂O	306.6	300.2	1	242001	23
Goyazite ()*	Alunite	SrAl₃(PO₄)(PO₃OH)(OH)₆	306.6	300.2	1	242001	173
Graphite ()*	None	C	306.6	300.2	3	242001,242002,242003	2812
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	306.6	300.2	1	242001	6890
Heterosite ()*	Olivine	Fe³⁺(PO₄)	306.6	300.2	1	242001	204
Kalinite ()*	None	KAl(SO₄)₂·11H₂O	306.6	300.2	0		54
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	306.6	300.2	0		5591
Kyanite ()*	Not in a structural group	Al₂OSiO₄	306.6	300.2	0		1507
Laueite ()*	Laueite	Mn²⁺Fe³⁺₂(PO₄)₂(OH)₂·8H₂O	306.6	300.2	1	242001	70
Ludlamite ()*	None	Fe²⁺₃(PO₄)₂·4H₂O	306.6	300.2	1	242001	66
Meta-autunite ()*	Meta-autunite	Ca(UO₂)₂(PO₄)₂·6H₂O	306.6	300.2	1	242001	388
Metavivianite ()*	Symplesite	Fe²⁺Fe³⁺₂(PO₄)₂(OH)₂·6H₂O	306.6	300.2	1	242001	26
Microcline ()*	Feldspar	K(AlSi₃O₈)	306.6	300.2	1	242001	4924
Mitridatite ()*	Arseniosiderite	Ca₂Fe³⁺₃O₂(PO₄)₃·3H₂O	306.6	300.2	1	242001	129
Montebrasite ()*	None	LiAl(PO₄)(OH)	306.6	300.2	1	242001	200
Moraesite ()*	None	Be₂(PO₄)(OH)·4H₂O	306.6	300.2	1	242001	35
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	306.6	300.2	2	242001,242004	17380
Opal ()*	Amorphous	SiO₂·nH₂O	306.6	300.2	1	242001	2994
Paravauxite ()*	Laueite	Fe²⁺Al₂(PO₄)₂(OH)₂·8H₂O	306.6	300.2	1	242001	19
Petalite ()*	Not in a structural group	LiAlSi₄O₁₀	306.6	300.2	0		124
Pyrite ()*	Pyrite	FeS₂	306.6	300.2	1	242001	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	306.6	300.2	1	242001	9056
Quartz ()*	Quartz	SiO₂	306.6	300.2	2	242001,242004	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	306.6	300.2	1	242001	1711
Rockbridgeite ()*	Rockbridgeite	(Fe²⁺_0.5Fe³⁺_0.5)₂Fe³⁺₃(PO₄)₃(OH)₅	306.6	300.2	1	242001	206
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	306.6	300.2	1	242001	2705
Siderite ()*	Calcite	Fe(CO₃)	306.6	300.2	1	242001	6417
Sillimanite ()*	Not in a structural group	Al₂SiO₅			1	242002	1516
Sphalerite ()*	Sphalerite	ZnS	306.6	300.2	1	242001	21482
Spodumene ()*	Pyroxene	LiAlSi₂O₆	306.6	300.2	1	242001	688
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	306.6	300.2	0		978
Strunzite ()*	Strunzite	Mn²⁺Fe³⁺₂(PO₄)₂(OH)₂·6H₂O	306.6	300.2	1	242001	98
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	306.6	300.2	0		2562
Triphylite ()*	Olivine	LiFe²⁺(PO₄)	306.6	300.2	1	242001	313
Vivianite ()*	Vivianite	Fe²⁺₃(PO₄)₂·8H₂O	306.6	300.2	1	242001	636
Wardite ()*	Wardite	NaAl₃(PO₄)₂(OH)₄·2H₂O	306.6	300.2	1	242001	58
Whitmoreite ()*	Arthurite	Fe²⁺Fe³⁺₂(PO₄)₂(OH)₂·4H₂O	306.6	300.2	1	242001	36
Zircon ()*	Zircon	Zr(SiO₄)	306.6	300.2	1	242001	5251

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Alexandra-0191	306.6	300.2	303.4 ± 3.2	Ar-Ar	Age of pegmatite		muscovite	12Dw60a			Muscovite			16181	Chickering Mine, Walpole, Cheshire Co., New Hampshire, USA	Chickering pegmatite	Bradley et al. (2016)	10.3749/canmin.1600035	CM54_945

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...