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:
Willimantic, Windham, Windham Co., Connecticut, USA

mindat Locality ID: 56463
mindat URL: http://www.mindat.org/loc-56463.html

Tectonic Settings:

Total number of sublocalities beneath "Willimantic, Windham, Windham Co., Connecticut, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Linen Company Mill No. 2
Oak Street Pegmatite

Latitude: 41°42'47"N
Longitude: 72°12'23"W
Decimal Degree (lat, lon): 41.713055555556,-72.206388888889

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.

Beryl	Bismutite	Chlorite	Clay	Feldspar	None	Not in a structural group	Prehnite	Quartz	Spinel

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 Be Bi C Ca Fe H K Mg Na O Si

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

Structural Groups for minerals in this locality:
Beryl Bismutite Chlorite Clay Feldspar None Not in a structural group Prehnite Quartz Spinel

9 IMA Minerals at location:

Albite ()*	Beryl ()*	Bismutite ()*	Clinochlore ()*	Magnetite ()*
Microcline ()*	Prehnite ()*	Quartz ()*	Sillimanite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	199367	8803
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1	199368	4286
Bismutite ()*	Bismutite	Bi₂O₂(CO₃)	1	199367	716
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	0		1756
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	0		14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	199367	4924
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	0		1898
Quartz ()*	Quartz	SiO₂	1	199367	61156
Sillimanite ()*	Not in a structural group	Al₂SiO₅	0		1516

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...