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:
Fitchburg, Worcester Co., Massachusetts, USA

mindat Locality ID: 22561
mindat URL: http://www.mindat.org/loc-22561.html

Tectonic Settings:

Total number of sublocalities beneath "Fitchburg, Worcester Co., Massachusetts, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Pearl Hill
Pine Hill
Rollstone Hill Quarry
Soapstone Locality
South Street Construction Site

Latitude: 42°36'3"N
Longitude: 71°47'49"W
Decimal Degree (lat, lon): 42.600833333333,-71.796944444444

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.

Allanite	Amorphous	Andalusite	Apatite	Arsenopyrite	Beryl	Calcite	Chalcopyrite	Chlorite	Clay
Clinozoisite	Corundum	Epidote	Feldspar	Fluorite	Garnet	Marcasite	Mica	Molybdenite	Nickeline
None	Not in a structural group	Pyrite	Pyroxene	Quartz	Rutile	Staurolite	Talc	Titanite	Tourmaline
Zircon

Albite ()*	Allanite-(Ce) ()*	Almandine ()*	Andalusite ()*	Arsenopyrite ()*
Beryl ()*	Calcite ()*	Chalcopyrite ()*	Chamosite ()*	Epidote ()*
Fluorapatite ()*	Fluorite ()*	Ilmenite ()*	Marcasite ()*	Microcline ()*
Molybdenite ()*	Muscovite ()*	Opal ()*	Pyrite ()*	Pyrrhotite ()*
Quartz ()*	Rutile ()*	Schorl ()*	Sillimanite ()*	Spodumene ()*
Staurolite ()*	Talc ()*	Titanite ()*	Uraninite ()*	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 Ce Cu F Fe H K Li Mg Mo Na O P S Si Ti U Zr

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

Structural Groups for minerals in this locality:
Allanite Amorphous Andalusite Apatite Arsenopyrite Beryl Calcite Chalcopyrite Chlorite Clay
Clinozoisite Corundum Epidote Feldspar Fluorite Garnet Marcasite Mica Molybdenite Nickeline
None Not in a structural group Pyrite Pyroxene Quartz Rutile Staurolite Talc Titanite Tourmaline
Zircon

30 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	219828	8803
Allanite-(Ce) ()*	Allanite Epidote	CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)	1	219828	706
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	1	219828	2353
Andalusite ()*	Andalusite	Al₂SiO₅	0		1310
Arsenopyrite ()*	Arsenopyrite	FeAsS	1	219828	9052
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	3	219826,219827,219828	4286
Calcite ()*	Calcite	Ca(CO₃)	1	219828	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	219828	27198
Chamosite ()*	Chlorite Clay	(Fe²⁺,Mg,Al,Fe³⁺)₆(Si,Al)₄O₁₀(OH,O)₈	1	219828	577
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	219828	8173
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	1	219828	2740
Fluorite ()*	Fluorite	CaF₂	1	219828	9617
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1	219828	5433
Marcasite ()*	Marcasite	FeS₂	1	219828	5674
Microcline ()*	Feldspar	K(AlSi₃O₈)	2	219827,219828	4924
Molybdenite ()*	Molybdenite	MoS₂	2	219826,219828	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	3	219827,219828,219830	17380
Opal ()*	Amorphous	SiO₂·nH₂O	2	219828,219830	2994
Pyrite ()*	Pyrite	FeS₂	1	219828	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	219828	9056
Quartz ()*	Quartz	SiO₂	3	219827,219828,219830	61156
Rutile ()*	Rutile	TiO₂	1	219828	5614
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	2	219827,219828	2705
Sillimanite ()*	Not in a structural group	Al₂SiO₅	0		1516
Spodumene ()*	Pyroxene	LiAlSi₂O₆	1	219827	688
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	1	219826	978
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	1	219829	3337
Titanite ()*	Titanite	CaTi(SiO₄)O	2	219828,219830	4899
Uraninite ()*	Fluorite	UO₂	1	219828	2718
Zircon ()*	Zircon	Zr(SiO₄)	1	219828	5251

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...