Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Ages for Coffinite at Newgate Copper Mine (Old Newgate Prison), Simsbury Mines, East Granby, Hartford Co., Connecticut, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 220Ma - 220Ma at this locality

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
sedcu-00664	220	220			Cu	205644	Newgate Copper Mine (Old Newgate Prison), Simsbury Mines, East Granby, Hartford Co., Connecticut, USA	Cox et al. (2003)	USGSOFR03_107