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:
Wells, York Co., Maine, USA

Oldest recorded age at locality: 255
Youngest recorded age at locality: 239

mindat Locality ID: 105704
mindat URL: http://www.mindat.org/loc-105704.html

Tectonic Settings:

Total number of sublocalities beneath "Wells, York Co., Maine, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 43°19'20"N
Longitude: 70°34'51"W
Decimal Degree (lat, lon): 43.322222222222,-70.580833333333

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.

Amphibole	Feldspar	Fluorite	None	Olivine	Spinel	Titanite	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 Ca F Fe H K Na O Si Ti Zr

Elements from minerals reported directly at this locality: Al Ca F Fe H K Na O Si Ti Zr

Structural Groups for minerals in this locality:
Amphibole Feldspar Fluorite None Olivine Spinel Titanite Zircon

7 IMA Minerals at location:

Arfvedsonite ()*	Fayalite ()*	Fluorite ()*	Magnetite ()*	Microcline ()*
Titanite ()*	Zircon ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Arfvedsonite ()*	Amphibole	NaNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂	255	239	295
Fayalite ()*	Olivine	Fe²⁺₂(SiO₄)	255	239	371
Fluorite ()*	Fluorite	CaF₂	255	239	9617
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	255	239	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	255	239	4924
Titanite ()*	Titanite	CaTi(SiO₄)O	255	239	4899
Zircon ()*	Zircon	Zr(SiO₄)	255	239	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-0420	255	239	247 ± 8	K-Ar	Age of granite		biotite							105704	Wells, York Co., Maine, USA	Wells	Zartman et al. (1970)	10.1130/0016-7606(1970)81[3359:APDOKR]2.0.CO;2	GSAB81_3359

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...