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:
Sturbridge, Worcester Co., Massachusetts, USA

mindat Locality ID: 56332
mindat URL: http://www.mindat.org/loc-56332.html

Tectonic Settings:

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

Number of Child Localities: 2
Child Localities:
Shumway Hill
Sturbridge Graphite Mine (Tantiusques Mine; Winthrop Lead Mine)

Latitude: 42°3'26"N
Longitude: 72°7'51"W
Decimal Degree (lat, lon): 42.057222222222,-72.130833333333

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	Calcite	Feldspar	None	Not in a structural group	Pyrite	Pyroxene	Quartz	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 C Ca Fe K Mg Na O S Si Zr

Elements from minerals reported directly at this locality: Al K Mg Na O Si Zr

Structural Groups for minerals in this locality:
Beryl Calcite Feldspar None Not in a structural group Pyrite Pyroxene Quartz Spinel Zircon

12 IMA Minerals at location:

Albite ()*	Calcite ()*	Cordierite ()*	Enstatite ()*	Graphite ()*
Magnetite ()*	Microcline ()*	Orthoclase ()*	Pyrite ()*	Quartz ()*
Sillimanite ()*	Zircon ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	0		8803
Calcite ()*	Calcite	Ca(CO₃)	1	219915	27770
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	1	219914	1008
Enstatite ()*	Pyroxene	Mg₂Si₂O₆	0		944
Graphite ()*	None	C	1	219915	2812
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	219915	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	0		4924
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	1	219914	2349
Pyrite ()*	Pyrite	FeS₂	1	219915	39462
Quartz ()*	Quartz	SiO₂	1	219915	61156
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1	219915	1516
Zircon ()*	Zircon	Zr(SiO₄)	0		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...