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:
Norwalk, Fairfield Co., Connecticut, USA

mindat Locality ID: 13419
mindat URL: http://www.mindat.org/loc-13419.html

Tectonic Settings:

Total number of sublocalities beneath "Norwalk, Fairfield Co., Connecticut, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Norwalk Silver Mine
State Route 15 / US Highway 7 Interchange Area
Unnamed Chlorite Outcrop [1]

Latitude: 41°8'40"N
Longitude: 73°25'42"W
Decimal Degree (lat, lon): 41.144444444444,-73.428333333333

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.

Calcite	Chalcopyrite	Clay	Feldspar	Kaolinite	Mica	None	Pyrite	Quartz	Rocksalt
Stilbite

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 Cu Fe H K Na O Pb S Si

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

Structural Groups for minerals in this locality:
Calcite Chalcopyrite Clay Feldspar Kaolinite Mica None Pyrite Quartz Rocksalt
Stilbite

10 IMA Minerals at location:

Albite ()*	Calcite ()*	Chalcopyrite ()*	Galena ()*	Kaolinite ()*
Microcline ()*	Muscovite ()*	Pyrite ()*	Quartz ()*	Stilbite-Ca ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	0		8803
Calcite ()*	Calcite	Ca(CO₃)	1	198760	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	198758	27198
Galena ()*	Rocksalt	PbS	1	198758	24243
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	0		5591
Microcline ()*	Feldspar	K(AlSi₃O₈)	0		4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	0		17380
Pyrite ()*	Pyrite	FeS₂	2	198758,198760	39462
Quartz ()*	Quartz	SiO₂	2	198758,198760	61156
Stilbite-Ca ()*	Stilbite	NaCa₄(Si₂₇Al₉)O₇₂·28H₂O	1	198759	268

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...