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:
North Andover, Essex Co., Massachusetts, USA

mindat Locality ID: 209995
mindat URL: http://www.mindat.org/loc-209995.html

Tectonic Settings:

Total number of sublocalities beneath "North Andover, Essex Co., Massachusetts, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Marble Ridge
Route 114 Calc-silicate Locality
Route 114 Pegmatite Locality

Latitude: 42°41'55"N
Longitude: 71°8'8"W
Decimal Degree (lat, lon): 42.698611111111,-71.135555555556

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	Clay	Clinozoisite	Epidote	Feldspar	Gadolinite
Garnet	Löllingite	Mica	None	Not in a structural group	Olivine	Pyroxene	Quartz

Actinolite ()*	Albite ()*	Bertrandite ()*	Beryl ()*	Calcite ()*
Clinozoisite ()*	Diopside ()*	Ferrisicklerite ()*	Fluorapatite ()*	Grossular ()*
Heterosite ()*	Hydroxylherderite ()*	Löllingite ()*	Muscovite ()*	Opal ()*
Quartz ()*	Sillimanite ()*

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 Be C Ca F Fe H K Li Mg Mn Na O P Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Amphibole Apatite Beryl Calcite Clay Clinozoisite Epidote Feldspar Gadolinite
Garnet Löllingite Mica None Not in a structural group Olivine Pyroxene Quartz

17 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	1	219376	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	219377	8803
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	1	219377	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1	219377	4286
Calcite ()*	Calcite	Ca(CO₃)	1	219376	27770
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	219376	1025
Diopside ()*	Pyroxene	CaMgSi₂O₆	1	219376	4135
Ferrisicklerite ()*	Olivine	Li_1-x(Fe³⁺,Mn²⁺)(PO₄)	1	219377	108
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	1	219377	2740
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	1	219376	1544
Heterosite ()*	Olivine	Fe³⁺(PO₄)	1	219377	204
Hydroxylherderite ()*	Gadolinite	CaBe(PO₄)(OH)	1	219377	119
Löllingite ()*	Löllingite	FeAs₂	1	219377	762
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	219375	17380
Opal ()*	Amorphous	SiO₂·nH₂O	1	219376	2994
Quartz ()*	Quartz	SiO₂	2	219375,219376	61156
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1	219375	1516

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...