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:
Peekskill, Westchester Co., New York, USA

mindat Locality ID: 4016
mindat URL: http://www.mindat.org/loc-4016.html

Tectonic Settings:

Total number of sublocalities beneath "Peekskill, Westchester Co., New York, USA": 10
Total number of bottom-level sublocalities: 9

Number of Child Localities: 9
Child Localities:
Camp Smith
Couch Quarry
Croft Mine (Croft Magnetic Iron Mine)
De Luca Mine (McCoy Mine)
Dickey Brook
Mohegan Quarries
Peekskill Meteorite
September Mine
Todd Mine

Latitude: 41°17'42"N
Longitude: 73°55'27"W
Decimal Degree (lat, lon): 41.295,-73.924166666667

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	Calcite	Chlorite	Clay	Clinozoisite	Corundum	Epidote	Feldspar	Molybdenite
Nickeline	None	Not in a structural group	Pyrite	Pyroxene	Quartz	Spinel	Staurolite	Thomsonite	Titanite

Actinolite ()*	Anhydrite ()*	Augite ()*	Calcite ()*	Corundum ()*
Epidote ()*	Graphite ()*	Kyanite ()*	Magnetite ()*	Microcline ()*
Molybdenite ()*	Opal ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Sillimanite ()*	Spinel ()*	Staurolite ()*	Sudoite ()*	Thomsonite-Ca ()*
Titanite ()*

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 C Ca Fe H K Mg Mo Na O S Si Ti

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

Structural Groups for minerals in this locality:
Amorphous Amphibole Calcite Chlorite Clay Clinozoisite Corundum Epidote Feldspar Molybdenite
Nickeline None Not in a structural group Pyrite Pyroxene Quartz Spinel Staurolite Thomsonite Titanite

21 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# 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	1	249024	3419
Anhydrite ()*	Not in a structural group	Ca(SO₄)	1	249018	1588
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	0		2060
Calcite ()*	Calcite	Ca(CO₃)	1	249024	27770
Corundum ()*	Corundum	Al₂O₃	2	249019,249023	1797
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2	249018,249024	8173
Graphite ()*	None	C	1	249018	2812
Kyanite ()*	Not in a structural group	Al₂OSiO₄	0		1507
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	3	249019,249023,249024	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	249018	4924
Molybdenite ()*	Molybdenite	MoS₂	0		5800
Opal ()*	Amorphous	SiO₂·nH₂O	2	249016,249018	2994
Pyrite ()*	Pyrite	FeS₂	1	249024	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	249024	9056
Quartz ()*	Quartz	SiO₂	2	249020,249021	61156
Sillimanite ()*	Not in a structural group	Al₂SiO₅	0		1516
Spinel ()*	Spinel	MgAl₂O₄	0		1934
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	0		978
Sudoite ()*	Chlorite Clay	Mg₂Al₃(Si₃Al)O₁₀(OH)₈	1	249020	51
Thomsonite-Ca ()*	Thomsonite	NaCa₂(Al₅Si₅)O₂₀·6H₂O	0		452
Titanite ()*	Titanite	CaTi(SiO₄)O	1	249018	4899

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...