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:
Essex Co., Vermont, USA

Oldest recorded age at locality: 171
Youngest recorded age at locality: 171

mindat Locality ID: 22493
mindat URL: http://www.mindat.org/loc-22493.html

Tectonic Settings:

Total number of sublocalities beneath "Essex Co., Vermont, USA": 6
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Brighton
Lemington
Lunenburg

Latitude: 44°48'31"N
Longitude: 71°52'9"W
Decimal Degree (lat, lon): 44.808611111111,-71.869166666667

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.

Amphibole	Andalusite	Calcite	Clay	Feldspar	Fluorite	Garnet	Mica	Molybdenite	None
Not in a structural group	Pyrite	Pyroxene	Quartz	Spinel	Titanite	Zircon

Actinolite ()*	Albite ()*	Almandine ()*	Andalusite ()*	Anorthite ()*
Augite ()*	Calcite ()*	Diopside ()*	Fluorite ()*	Hastingsite ()*
Magnetite ()*	Microcline ()*	Molybdenite ()*	Muscovite ()*	Orthoclase ()*
Pyrite ()*	Quartz ()*	Sillimanite ()*	Titanite ()*	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 C Ca F Fe H K Mg Mo Na O S Si Ti Zr

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

Structural Groups for minerals in this locality:
Amphibole Andalusite Calcite Clay Feldspar Fluorite Garnet Mica Molybdenite None
Not in a structural group Pyrite Pyroxene Quartz Spinel Titanite Zircon

20 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# 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	171	171	2	279006,279007	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	171	171	2	279006,279007	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	171	171	0		2353
Andalusite ()*	Andalusite	Al₂SiO₅			1	279004	1310
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	171	171	1	279006	1036
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	171	171	1	279006	2060
Calcite ()*	Calcite	Ca(CO₃)	171	171	1	279006	27770
Diopside ()*	Pyroxene	CaMgSi₂O₆	171	171	1	279006	4135
Fluorite ()*	Fluorite	CaF₂	171	171	2	279006,279007	9617
Hastingsite ()*	Amphibole	NaCa₂(Fe²⁺₄Fe³⁺)(Si₆Al₂)O₂₂(OH)₂	171	171	1	279006	209
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	171	171	2	279006,279007	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	171	171	2	279006,279007	4924
Molybdenite ()*	Molybdenite	MoS₂			1	279004	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	171	171	2	279004,279006	17380
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	171	171	2	279006,279007	2349
Pyrite ()*	Pyrite	FeS₂	171	171	1	279006	39462
Quartz ()*	Quartz	SiO₂	171	171	3	279004,279006,279007	61156
Sillimanite ()*	Not in a structural group	Al₂SiO₅			1	279004	1516
Titanite ()*	Titanite	CaTi(SiO₄)O	171	171	1	279006	4899
Zircon ()*	Zircon	Zr(SiO₄)	171	171	2	279006,279007	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
AREPS5_257-00014	There are two Mount Monadnock's in mindat, one in NH one in VT, neither match the GPS listed in this record, but the GPS here is in N. VT near the border w/ NH.

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	AREPS5_257-00014	171	171	171											220659	Monadnock Mountain (Mount Monadnock), Lemington, Essex Co., Vermont, USA	Mount Monadnock	Zartman (1977)	10.1146/annurev.ea.05.050177.001353	AREPS5_257

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...