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:
Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USA

Oldest recorded age at locality: 274
Youngest recorded age at locality: 242.3

mindat Locality ID: 6782
mindat URL: http://www.mindat.org/loc-6782.html

Tectonic Settings:

Total number of sublocalities beneath "Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 41°30'59"N
Longitude: 72°31'19"W
Decimal Degree (lat, lon): 41.516388888889,-72.521944444444

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.

Apatite	Arseniosiderite	Beryl	Clay	Columbite	Feldspar	Garnet	Mica	Monazite	None
Not in a structural group	Pyrite	Quartz	Rhabdophane	Rutile	Tourmaline	Triplite	Zircon

Albite ()*	Almandine ()*	Bertrandite ()*	Beryl ()*	Cassiterite ()*
Elbaite ()*	Fluorapatite ()*	Grayite ()*	Ixiolite ()*	Microcline ()*
Mitridatite ()*	Monazite-(Ce) ()*	Muscovite ()*	Pyrite ()*	Quartz ()*
Schorl ()*	Spessartine ()*	Tantalite-(Mn) ()*	Triplite ()*	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 Ca Ce F Fe H K Li Mn Na Nb O P Pb S Si Sn Ta Th Zr

Elements from minerals reported directly at this locality: Al B Be Ca Ce F Fe H K Li Mn Na O P Pb S Si Sn Ta Th Zr

Structural Groups for minerals in this locality:
Apatite Arseniosiderite Beryl Clay Columbite Feldspar Garnet Mica Monazite None
Not in a structural group Pyrite Quartz Rhabdophane Rutile Tourmaline Triplite Zircon

20 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	274	242.3	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	274	242.3	2353
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	274	242.3	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	274	242.3	4286
Cassiterite ()*	Rutile	SnO₂	274	242.3	5171
Elbaite ()*	Tourmaline	Na(Al_1.5Li_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	274	242.3	520
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	274	242.3	2740
Grayite ()*	Rhabdophane	(Th,Pb,Ca)(PO₄)·H₂O	274	242.3	17
Ixiolite ()*	Columbite	(Ta_2/3Mn²⁺_1/3)O₂	274	242.3	148
Microcline ()*	Feldspar	K(AlSi₃O₈)	274	242.3	4924
Mitridatite ()*	Arseniosiderite	Ca₂Fe³⁺₃O₂(PO₄)₃·3H₂O	274	242.3	129
Monazite-(Ce) ()*	Monazite	Ce(PO₄)	274	242.3	945
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	244.1	242.3	17380
Pyrite ()*	Pyrite	FeS₂	274	242.3	39462
Quartz ()*	Quartz	SiO₂	274	242.3	61156
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	274	242.3	2705
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃	274	242.3	1214
Tantalite-(Mn) ()*	Columbite	Mn²⁺Ta₂O₆	274	242.3	211
Triplite ()*	Triplite	Mn²⁺₂(PO₄)F	274	242.3	233
Zircon ()*	Zircon	Zr(SiO₄)	274	272	5251

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Alexandra-0185	273.63	273.03	273.23 ±.0.3	U-Pb	Age of pegmatite	zircon	10AMC3	Zircon	6782	Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USA	Anderson	Bradley et al. (2016)	10.3749/canmin.1600035	CM54_945
Alexandra-0186	244.1	242.3	243.2 ± 0.9	Ar-Ar	Age of pegmatite	muscovite	10AMC3	Muscovite	6782	Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USA	Anderson	Bradley et al. (2016)	10.3749/canmin.1600035	CM54_945
Bradley_2012_069	274	272	273±1	U/Pb		zircon		Zircon	6782	Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USA	Anderson	McCauley and Bradley (2014)	10.3749/canmin.52.2.183	CM52_183

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...