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:
Acton, Middlesex Co., Massachusetts, USA

mindat Locality ID: 51426
mindat URL: http://www.mindat.org/loc-51426.html

Tectonic Settings:

Total number of sublocalities beneath "Acton, Middlesex Co., Massachusetts, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Harris Quarry
McCarthy Quarry

Latitude: 42°31'2"N
Longitude: 71°24'56"W
Decimal Degree (lat, lon): 42.517222222222,-71.415555555556

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.

Beryl	Clay	Clinozoisite	Epidote	Feldspar	Kaolinite	Malachite	Mica	None	Pyroxene
Quartz	Rutile	Spinel	Zircon

Albite ()*	Beryl ()*	Clinozoisite ()*	Diopside ()*	Epidote ()*
Kaolinite ()*	Magnetite ()*	Malachite ()*	Microcline ()*	Muscovite ()*
Quartz ()*	Rutile ()*	Spinel ()*	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 Be C Ca Cu Fe H K Mg Na O Si Ti Zr

Elements from minerals reported directly at this locality: Al Be Ca H Mg O Si

Structural Groups for minerals in this locality:
Beryl Clay Clinozoisite Epidote Feldspar Kaolinite Malachite Mica None Pyroxene
Quartz Rutile Spinel Zircon

14 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	219569	8803
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	0		4286
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	0		1025
Diopside ()*	Pyroxene	CaMgSi₂O₆	0		4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2	219569,219570	8173
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1	219569	5591
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	2	219569,219570	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1	219569	12537
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	219569	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2	219569,219570	17380
Quartz ()*	Quartz	SiO₂	2	219569,219570	61156
Rutile ()*	Rutile	TiO₂	1	219569	5614
Spinel ()*	Spinel	MgAl₂O₄	0		1934
Zircon ()*	Zircon	Zr(SiO₄)	2	219569,219570	5251

No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

All age data...