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:
Ridgefield, Fairfield Co., Connecticut, USA

mindat Locality ID: 13429
mindat URL: http://www.mindat.org/loc-13429.html

Tectonic Settings:

Total number of sublocalities beneath "Ridgefield, Fairfield Co., Connecticut, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Branchville
Casey Quarry (Ridgefield Pegmatite)
Ridgefield Silver Mine
Titicus Mica Quarry

Latitude: 41°17'24"N
Longitude: 73°29'4"W
Decimal Degree (lat, lon): 41.29,-73.484444444444

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	Apatite	Beryl	Calcite	Chalcopyrite	Clay	Clinozoisite	Corundum	Epidote
Feldspar	Fluorite	Gypsum	Humite	Malachite	Meta-autunite	Mica	Nickeline	None	Not in a structural group
Pyroxene	Quartz	Rocksalt	Rutile	Serpentine	Sphalerite	Spinel	Talc	Titanite	Topaz
Tourmaline	Zircon

Actinolite ()*	Albite ()*	Anatase ()*	Bertrandite ()*	Beryl ()*
Calcite ()*	Chalcopyrite ()*	Chondrodite ()*	Chrysotile ()*	Dolomite ()*
Epidote ()*	Fluorapatite ()*	Galena ()*	Graphite ()*	Gypsum ()*
Hematite ()*	Ilmenite ()*	Kyanite ()*	Laumontite ()*	Magnetite ()*
Malachite ()*	Meta-autunite ()*	Microcline ()*	Muscovite ()*	Opal ()*
Orthoclase ()*	Phlogopite ()*	Pyrrhotite ()*	Quartz ()*	Rutile ()*
Schorl ()*	Sillimanite ()*	Sphalerite ()*	Spodumene ()*	Talc ()*
Titanite ()*	Topaz ()*	Tremolite ()*	Uraninite ()*	Uranophane-α ()*
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 B Be C Ca Cu F Fe H K Li Mg Na O P Pb S Si Ti U Zn Zr

Elements from minerals reported directly at this locality: Al C Ca Cu F Fe H K Mg O S Si Ti

Structural Groups for minerals in this locality:
Amorphous Amphibole Apatite Beryl Calcite Chalcopyrite Clay Clinozoisite Corundum Epidote
Feldspar Fluorite Gypsum Humite Malachite Meta-autunite Mica Nickeline None Not in a structural group
Pyroxene Quartz Rocksalt Rutile Serpentine Sphalerite Spinel Talc Titanite Topaz
Tourmaline Zircon

41 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	0		3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	2	198770,198772	8803
Anatase ()*	Not in a structural group	TiO₂	0		2162
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	1	198770	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1	198770	4286
Calcite ()*	Calcite	Ca(CO₃)	0		27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	0		27198
Chondrodite ()*	Humite	Mg₅(SiO₄)₂F₂	0		285
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	0		951
Dolomite ()*	None	CaMg(CO₃)₂	0		9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	0		8173
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	1	198770	2740
Galena ()*	Rocksalt	PbS	1	198771	24243
Graphite ()*	None	C	0		2812
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	0		6890
Hematite ()*	Corundum	Fe₂O₃	0		14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	0		5433
Kyanite ()*	Not in a structural group	Al₂OSiO₄	0		1507
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	0		1271
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	0		14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	0		12537
Meta-autunite ()*	Meta-autunite	Ca(UO₂)₂(PO₄)₂·6H₂O	1	198770	388
Microcline ()*	Feldspar	K(AlSi₃O₈)	2	198770,198772	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2	198770,198772	17380
Opal ()*	Amorphous	SiO₂·nH₂O	1	198770	2994
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	0		2349
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	0		2273
Pyrrhotite ()*	Nickeline	Fe₇S₈	0		9056
Quartz ()*	Quartz	SiO₂	3	198770,198771,198772	61156
Rutile ()*	Rutile	TiO₂	0		5614
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	2	198770,198772	2705
Sillimanite ()*	Not in a structural group	Al₂SiO₅	0		1516
Sphalerite ()*	Sphalerite	ZnS	1	198771	21482
Spodumene ()*	Pyroxene	LiAlSi₂O₆	1	198770	688
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	0		3337
Titanite ()*	Titanite	CaTi(SiO₄)O	0		4899
Topaz ()*	Topaz	Al₂SiO₄F₂	0		1476
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	0		2562
Uraninite ()*	Fluorite	UO₂	1	198770	2718
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O	1	198770	890
Zircon ()*	Zircon	Zr(SiO₄)	1	198770	5251

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...