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:
Westchester Co., New York, USA

Oldest recorded age at locality: 385
Youngest recorded age at locality: 357

mindat Locality ID: 16857
mindat URL: http://www.mindat.org/loc-16857.html

Tectonic Settings:

Total number of sublocalities beneath "Westchester Co., New York, USA": 72
Total number of bottom-level sublocalities: 48

Number of Child Localities: 21
Child Localities:
Bedford
Cortlandt Township
Croton Lake
Eastchester
Greenburgh
Harrison
Mamaroneck
Mount Pleasant
New Castle
New Rochelle
North Castle
North Salem
Ossining (Sing Sing)
Peekskill
Pound Ridge
Rye
Scarsdale
Somers Township
White Plains
Yonkers
Yorktown

Latitude: 41°6'24"N
Longitude: 73°46'43"W
Decimal Degree (lat, lon): 41.106666666667,-73.778611111111

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.

Amorphous	Amphibole	Analcime	Apatite	Aragonite	Autunite	Baryte	Beryl	Bismutite	Brucite
Calcite	Chalcopyrite	Chlorite	Clay	Clinozoisite	Columbite	Copper	Corundum	Dumortierite	Epidote
Feldspar	Fluorite	Garnet	Harmotome	Heulandite	Kaolinite	Malachite	Meta-autunite	Mica	Molybdenite
Monazite	Mordenite	Natrolite	Nickeline	None	Not in a structural group	Pectolite	Phosphuranylite	Pyrite	Pyroxene
Quartz	Rocksalt	Rutile	Sapphirine	Scheelite	Serpentine	Sphalerite	Spinel	Staurolite	Stibnite
Talc	Thomsonite	Titanite	Tourmaline	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: Ag Al B Ba Be Bi C Ca Ce Cl Cr Cu F Fe H K Mg Mn Mo Na Nb O P Pb S Si Ti U V Zn Zr

Elements from minerals reported directly at this locality: Al Ca H O Si

Structural Groups for minerals in this locality:
Amorphous Amphibole Analcime Apatite Aragonite Autunite Baryte Beryl Bismutite Brucite
Calcite Chalcopyrite Chlorite Clay Clinozoisite Columbite Copper Corundum Dumortierite Epidote
Feldspar Fluorite Garnet Harmotome Heulandite Kaolinite Malachite Meta-autunite Mica Molybdenite
Monazite Mordenite Natrolite Nickeline None Not in a structural group Pectolite Phosphuranylite Pyrite Pyroxene
Quartz Rocksalt Rutile Sapphirine Scheelite Serpentine Sphalerite Spinel Staurolite Stibnite
Talc Thomsonite Titanite Tourmaline Zircon

86 IMA Minerals at location:

Actinolite ()*	Albite ()*	Almandine ()*	Analcime ()*	Anglesite ()*
Anhydrite ()*	Antigorite ()*	Aragonite ()*	Augite ()*	Autunite ()*
Azurite ()*	Baryte ()*	Bertrandite ()*	Beryl ()*	Bismuthinite ()*
Bismutite ()*	Brucite ()*	Calcite ()*	Cerussite ()*	Chalcopyrite ()*
Chromite ()*	Chrysotile ()*	Clinochlore ()*	Coffinite ()*	Columbite-(Fe) ()*
Cordierite ()*	Corundum ()*	Diopside ()*	Dolomite ()*	Dumortierite ()*
Enstatite ()*	Epidote ()*	Epistilbite ()*	Ferro-hornblende ()*	Fluorite ()*
Galena ()*	Graphite ()*	Harmotome ()*	Hematite ()*	Hercynite ()*
Heulandite-Ca ()*	Ilmenite ()*	Kaolinite ()*	Kyanite ()*	Magnesio-riebeckite ()*
Magnesiohögbomite-6N6S ()*	Magnesite ()*	Magnetite ()*	Malachite ()*	Meta-autunite ()*
Microcline ()*	Molybdenite ()*	Monazite-(Ce) ()*	Muscovite ()*	Natrolite ()*
Opal ()*	Orthoclase ()*	Pectolite ()*	Phlogopite ()*	Phosphuranylite ()*
Pyrite ()*	Pyrolusite ()*	Pyromorphite ()*	Pyrrhotite ()*	Quartz ()*
Rutile ()*	Sapphirine ()*	Schorl ()*	Schröckingerite ()*	Sillimanite ()*
Silver ()*	Sphalerite ()*	Spinel ()*	Staurolite ()*	Sudoite ()*
Talc ()*	Thomsonite-Ca ()*	Titanite ()*	Torbernite ()*	Tremolite ()*
Uraninite ()*	Uranophane-α ()*	Vanadinite ()*	Vauquelinite ()*	Wulfenite ()*
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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂			3	248985,249003,249024	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)			8	248965,248966,248969,248975,248981,248995,249000,249032	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	385	357	6	248965,248966,248970,248973,248974,248995	2353
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	385	357	3	248979,248983,249034	1627
Anglesite ()*	Baryte	Pb(SO₄)			1	249013	2734
Anhydrite ()*	Not in a structural group	Ca(SO₄)			1	249018	1588
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄			2	249003,249027	708
Aragonite ()*	Aragonite	Ca(CO₃)			1	248995	3250
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆			1	249014	2060
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O			5	248965,248966,248970,248973,249007	1272
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			3	249009,249013,249033	5509
Baryte ()*	Baryte	Ba(SO₄)			2	249009,249010	11547
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂			2	248965,249026	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈			7	248965,248966,248970,248973,249009,249010,249026	4286
Bismuthinite ()*	Stibnite	Bi₂S₃			2	248965,248966	1935
Bismutite ()*	Bismutite	Bi₂O₂(CO₃)			1	248965	716
Brucite ()*	Brucite	Mg(OH)₂			2	248994,249003	462
Calcite ()*	Calcite	Ca(CO₃)			13	248975,248979,248981,248984,248985,249003,249009,249010,249012,249013,249024,249027,249034	27770
Cerussite ()*	Aragonite	Pb(CO₃)			1	249013	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			5	248975,248987,248988,248995,249013	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄			1	249003	3902
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄			6	248985,248994,249003,249004,249009,249027	951
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈			3	248988,248999,249010	1756
Coffinite ()*	Zircon	U(SiO₄)·nH₂O			1	248965	566
Columbite-(Fe) ()*	Columbite	Fe²⁺Nb₂O₆			2	248966,248973	518
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈			2	248974,248979	1008
Corundum ()*	Corundum	Al₂O₃	385	357	7	248974,248979,248981,248983,249014,249019,249023	1797
Diopside ()*	Pyroxene	CaMgSi₂O₆			2	248999,249009	4135
Dolomite ()*	None	CaMg(CO₃)₂			5	248987,248988,248999,249009,249012	9895
Dumortierite ()*	Dumortierite	AlAl₆BSi₃O₁₈			1	249000	231
Enstatite ()*	Pyroxene	Mg₂Si₂O₆			1	249003	944
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)			7	248975,248976,248993,249009,249018,249024,249034	8173
Epistilbite ()*	Mordenite	Ca₃[Si₁₈Al₆O₄₈]·16H₂O	385	357	0		138
Ferro-hornblende ()*	Amphibole	Ca₂(Fe²⁺₄Al)(Si₇Al)O₂₂(OH)₂			1	248995	271
Fluorite ()*	Fluorite	CaF₂			1	249000	9617
Galena ()*	Rocksalt	PbS			3	248965,249009,249013	24243
Graphite ()*	None	C			5	248965,249000,249009,249014,249018	2812
Harmotome ()*	Harmotome	Ba₂(Si₁₂Al₄)O₃₂·12H₂O			4	249009,249010,249011,249034	290
Hematite ()*	Corundum	Fe₂O₃			2	248965,248995	14640
Hercynite ()*	Spinel	Fe²⁺Al₂O₄			2	248974,248981	407
Heulandite-Ca ()*	Heulandite	(Ca,Na,K)₅(Si₂₇Al₉)O₇₂·26H₂O			1	249009	246
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			4	248965,248966,248968,248973	5433
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			1	248965	5591
Kyanite ()*	Not in a structural group	Al₂OSiO₄			2	248981,249014	1507
Magnesio-riebeckite ()*	Amphibole	Na₂(Mg₃Fe³⁺₂)Si₈O₂₂(OH)₂			1	248976	93
Magnesiohögbomite-6N6S ()*	None	(Mg,Al,Fe)₃(Al,Ti)₈O₁₅(OH)			1	248981	3
Magnesite ()*	Calcite	Mg(CO₃)			1	249003	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	385	357	16	248965,248974,248975,248979,248981,248983,248997,248999,249014,249019,249023,249024,249027,249032,249033,249035	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			2	249013,249033	12537
Meta-autunite ()*	Meta-autunite	Ca(UO₂)₂(PO₄)₂·6H₂O			1	248973	388
Microcline ()*	Feldspar	K(AlSi₃O₈)			12	248965,248966,248969,248973,248993,248995,249000,249006,249018,249027,249032,249033	4924
Molybdenite ()*	Molybdenite	MoS₂			3	248975,248995,249014	5800
Monazite-(Ce) ()*	Monazite	Ce(PO₄)			1	249035	945
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			12	248965,248966,248973,248981,248995,248999,249000,249006,249009,249026,249033,249034	17380
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O			1	248975	1236
Opal ()*	Amorphous	SiO₂·nH₂O	385	357	9	248965,248966,248970,248981,248983,248995,249016,249018,249033	2994
Orthoclase ()*	Feldspar	K(AlSi₃O₈)			6	248965,248966,248997,249009,249032,249033	2349
Pectolite ()*	Pectolite	NaCa₂Si₃O₈(OH)			3	249009,249010,249011	363
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂			5	248985,248988,248999,249009,249033	2273
Phosphuranylite ()*	Phosphuranylite	KCa(H₃O)₃(UO₂)₇(PO₄)₄O₄·8H₂O			1	248965	182
Pyrite ()*	Pyrite	FeS₂			16	248965,248966,248970,248975,248987,248988,248995,248999,249007,249009,249010,249012,249013,249024,249032,249034	39462
Pyrolusite ()*	Rutile	MnO₂			4	248965,248966,248995,249009	3106
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl			2	249009,249013	1725
Pyrrhotite ()*	Nickeline	Fe₇S₈			3	248975,249024,249032	9056
Quartz ()*	Quartz	SiO₂			26	248965,248966,248970,248972,248973,248974,248975,248976,248981,248985,248987,248993,248994,248995,248997,249000,249003,249006,249007,249009,249010,249012,249020,249021,249026,249033	61156
Rutile ()*	Rutile	TiO₂			7	248965,248966,248999,249009,249010,249011,249012	5614
Sapphirine ()*	Sapphirine	Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]			2	248974,248979	129
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)			5	248965,248966,248970,248973,249006	2705
Schröckingerite ()*	None	NaCa₃(UO₂)(SO₄)(CO₃)₃F·10H₂O			1	248973	128
Sillimanite ()*	Not in a structural group	Al₂SiO₅			5	248974,248981,248986,249014,249035	1516
Silver ()*	Copper	Ag			2	249009,249013	5186
Sphalerite ()*	Sphalerite	ZnS			3	248987,248988,249009	21482
Spinel ()*	Spinel	MgAl₂O₄			4	248974,248981,249014,249027	1934
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)			3	248981,248985,249014	978
Sudoite ()*	Chlorite Clay	Mg₂Al₃(Si₃Al)O₁₀(OH)₈			1	249020	51
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂			2	249009,249012	3337
Thomsonite-Ca ()*	Thomsonite	NaCa₂(Al₅Si₅)O₂₀·6H₂O			1	249014	452
Titanite ()*	Titanite	CaTi(SiO₄)O			7	248965,248997,249003,249004,249009,249014,249018	4899
Torbernite ()*	None	Cu(UO₂)₂(PO₄)₂·12H₂O			3	248965,248966,248970	1059
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂			6	248991,248994,249003,249009,249027,249034	2562
Uraninite ()*	Fluorite	UO₂			1	248965	2718
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O			2	248965,248966	890
Vanadinite ()*	Apatite	Pb₅(VO₄)₃Cl			1	249013	605
Vauquelinite ()*	None	CuPb₂(CrO₄)(PO₄)(OH)			1	249013	63
Wulfenite ()*	Scheelite	PbMoO₄			2	249009,249013	1655
Zircon ()*	Zircon	Zr(SiO₄)			4	248965,248966,248970,248973	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
	USGS-Rb-Sr-07109	385	357	371±14	Rb-Sr	age of intrusion		whole rock							23534	Strang Emery Pit, Toddville, Cortlandt Township, Westchester Co., New York, USA		USGS-Rb-Sr		USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...