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:
Brookfield, Fairfield Co., Connecticut, USA

mindat Locality ID: 17110
mindat URL: http://www.mindat.org/loc-17110.html

Tectonic Settings:

Total number of sublocalities beneath "Brookfield, Fairfield Co., Connecticut, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Condominium Development Area
Danbury Beryl Prospect
Old Lead Mine
Old U. S. Route 7
State Route 133
U. S. Route 7 Expressway (Brookfield Bypass)
U. S. Route 7 Expressway (Danbury Line To Iron Works District)

Latitude: 41°27'19"N
Longitude: 73°23'43"W
Decimal Degree (lat, lon): 41.455277777778,-73.395277777778

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	Aragonite	Arrojadite	Arsenopyrite	Baryte	Beryl	Calcite	Chalcopyrite
Clay	Clinozoisite	Corundum	Epidote	Feldspar	Fluorite	Gadolinite	Garnet	Heulandite	Humite
Mica	Molybdenite	Nickeline	None	Not in a structural group	Olivine	Pyrite	Pyroxene	Quartz	Rocksalt
Rutile	Sepiolite	Serpentine	Sphalerite	Spinel	Staurolite	Stilbite	Talc	Titanite	Tourmaline
Vivianite	Wollastonite	Wurtzite	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 As B Be C Ca Cd Cl Cu F Fe H K Li Mg Mn Mo Na O P Pb S Si Ti Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Amphibole Apatite Aragonite Arrojadite Arsenopyrite Baryte Beryl Calcite Chalcopyrite
Clay Clinozoisite Corundum Epidote Feldspar Fluorite Gadolinite Garnet Heulandite Humite
Mica Molybdenite Nickeline None Not in a structural group Olivine Pyrite Pyroxene Quartz Rocksalt
Rutile Sepiolite Serpentine Sphalerite Spinel Staurolite Stilbite Talc Titanite Tourmaline
Vivianite Wollastonite Wurtzite Zircon

63 IMA Minerals at location:

Actinolite ()*	Albite ()*	Almandine ()*	Anatase ()*	Anglesite ()*
Annite ()*	Aragonite ()*	Arsenopyrite ()*	Augite ()*	Bertrandite ()*
Beryl ()*	Calcite ()*	Cerussite ()*	Chalcopyrite ()*	Chondrodite ()*
Chrysoberyl ()*	Chrysotile ()*	Clinozoisite ()*	Datolite ()*	Dickinsonite-(KMnNa) ()*
Diopside ()*	Dolomite ()*	Elbaite ()*	Epidote ()*	Fluorapatite ()*
Fluorite ()*	Forsterite ()*	Galena ()*	Greenockite ()*	Heulandite-Ca ()*
Ilmenite ()*	Kyanite ()*	Laumontite ()*	Lithiophilite ()*	Magnetite ()*
Metaswitzerite ()*	Microcline ()*	Molybdenite ()*	Muscovite ()*	Opal ()*
Orthoclase ()*	Phlogopite ()*	Pyrite ()*	Pyromorphite ()*	Pyrrhotite ()*
Quartz ()*	Rutile ()*	Schorl ()*	Sepiolite ()*	Sillimanite ()*
Smithsonite ()*	Sphalerite ()*	Spodumene ()*	Staurolite ()*	Stilbite-Ca ()*
Talc ()*	Titanite ()*	Tremolite ()*	Triphylite ()*	Vivianite ()*
Wollastonite ()*	Zircon ()*	Zoisite ()*

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	198712	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	2	198710,198712	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	2	198710,198712	2353
Anatase ()*	Not in a structural group	TiO₂	1	198712	2162
Anglesite ()*	Baryte	Pb(SO₄)	1	198712	2734
Annite ()*	Mica Clay	KFe²⁺₃(AlSi₃O₁₀)(OH)₂	1	198707	356
Aragonite ()*	Aragonite	Ca(CO₃)	2	198706,198712	3250
Arsenopyrite ()*	Arsenopyrite	FeAsS	1	198712	9052
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	1	198712	2060
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	2	198710,198712	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	3	198707,198710,198712	4286
Calcite ()*	Calcite	Ca(CO₃)	5	198706,198708,198709,198711,198712	27770
Cerussite ()*	Aragonite	Pb(CO₃)	2	198708,198712	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2	198706,198712	27198
Chondrodite ()*	Humite	Mg₅(SiO₄)₂F₂	1	198712	285
Chrysoberyl ()*	Olivine	BeAl₂O₄	1	198712	321
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	1	198712	951
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	198712	1025
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	1	198712	498
Dickinsonite-(KMnNa) ()*	Arrojadite	K(NaMn)CaNa₃AlMn₁₃(PO₄)₁₂(OH)₂	1	198712	26
Diopside ()*	Pyroxene	CaMgSi₂O₆	1	198712	4135
Dolomite ()*	None	CaMg(CO₃)₂	2	198709,198712	9895
Elbaite ()*	Tourmaline	Na(Al_1.5Li_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1	198712	520
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	198712	8173
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	1	198712	2740
Fluorite ()*	Fluorite	CaF₂	1	198710	9617
Forsterite ()*	Olivine	Mg₂(SiO₄)	1	198712	1188
Galena ()*	Rocksalt	PbS	2	198708,198712	24243
Greenockite ()*	Wurtzite	CdS	1	198712	717
Heulandite-Ca ()*	Heulandite	(Ca,Na,K)₅(Si₂₇Al₉)O₇₂·26H₂O	1	198712	246
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1	198712	5433
Kyanite ()*	Not in a structural group	Al₂OSiO₄	1	198712	1507
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	1	198712	1271
Lithiophilite ()*	Olivine	LiMn²⁺(PO₄)	1	198712	155
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	2	198706,198712	14899
Metaswitzerite ()*	None	Mn²⁺₃(PO₄)₂·4H₂O	1	198712	22
Microcline ()*	Feldspar	K(AlSi₃O₈)	4	198707,198710,198711,198712	4924
Molybdenite ()*	Molybdenite	MoS₂	1	198712	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	3	198707,198710,198712	17380
Opal ()*	Amorphous	SiO₂·nH₂O	1	198712	2994
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	2	198710,198712	2349
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	2	198711,198712	2273
Pyrite ()*	Pyrite	FeS₂	3	198706,198708,198712	39462
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl	1	198712	1725
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	198712	9056
Quartz ()*	Quartz	SiO₂	3	198707,198710,198712	61156
Rutile ()*	Rutile	TiO₂	1	198712	5614
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	3	198707,198710,198712	2705
Sepiolite ()*	Sepiolite Clay	Mg₄Si₆O₁₅(OH)₂·6H₂O	1	198712	241
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1	198712	1516
Smithsonite ()*	Calcite	Zn(CO₃)	1	198708	2473
Sphalerite ()*	Sphalerite	ZnS	2	198708,198712	21482
Spodumene ()*	Pyroxene	LiAlSi₂O₆	1	198712	688
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	1	198712	978
Stilbite-Ca ()*	Stilbite	NaCa₄(Si₂₇Al₉)O₇₂·28H₂O	1	198712	268
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	2	198708,198712	3337
Titanite ()*	Titanite	CaTi(SiO₄)O	1	198712	4899
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	1	198712	2562
Triphylite ()*	Olivine	LiFe²⁺(PO₄)	1	198712	313
Vivianite ()*	Vivianite	Fe²⁺₃(PO₄)₂·8H₂O	1	198712	636
Wollastonite ()*	Wollastonite	CaSiO₃	1	198712	1247
Zircon ()*	Zircon	Zr(SiO₄)	1	198712	5251
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	198712	1025

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...