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:
Holyoke, Hampden Co., Massachusetts, USA

mindat Locality ID: 16061
mindat URL: http://www.mindat.org/loc-16061.html

Tectonic Settings:

Total number of sublocalities beneath "Holyoke, Hampden Co., Massachusetts, USA": 4
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Holyoke Reservoir
Larabee's Quarry
Mount Tom

Latitude: 42°12'15"N
Longitude: 72°37'"W
Decimal Degree (lat, lon): 42.204166666667,-72.616666666667

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.

Baryte	Calcite	Clay	Clinozoisite	Corundum	Epidote	Feldspar	None	Not in a structural group	Prehnite
Pyrite	Pyroxene	Quartz	Rhodonite	Spinel	Talc

Anhydrite ()*	Anorthite ()*	Augite ()*	Babingtonite ()*	Baryte ()*
Calcite ()*	Diopside ()*	Epidote ()*	Graphite ()*	Hematite ()*
Magnetite ()*	Prehnite ()*	Pyrite ()*	Quartz ()*	Talc ()*

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 Ba C Ca Fe H Mg O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Baryte Calcite Clay Clinozoisite Corundum Epidote Feldspar None Not in a structural group Prehnite
Pyrite Pyroxene Quartz Rhodonite Spinel Talc

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Anhydrite ()*	Not in a structural group	Ca(SO₄)	1	219500	1588
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	1	219499	1036
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	1	219499	2060
Babingtonite ()*	Rhodonite	Ca₂Fe²⁺Fe³⁺Si₅O₁₄(OH)	1	219502	161
Baryte ()*	Baryte	Ba(SO₄)	1	219500	11547
Calcite ()*	Calcite	Ca(CO₃)	2	219499,219502	27770
Diopside ()*	Pyroxene	CaMgSi₂O₆	1	219499	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	219502	8173
Graphite ()*	None	C	1	219500	2812
Hematite ()*	Corundum	Fe₂O₃	2	219500,219502	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	219499	14899
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1	219502	1898
Pyrite ()*	Pyrite	FeS₂	1	219500	39462
Quartz ()*	Quartz	SiO₂	2	219501,219502	61156
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	1	219499	3337

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...