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 Chalcopyrite at Unorganized District, Pennington Co., South Dakota, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1700Ma - 1700Ma at this locality

Locality age (remote)

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
Alexandra-0372	1700	1700			Li,Be,Sn,Cs,Ta,Nb,U	122418	Black Elk Peak (Harney Peak), Pennington Co., South Dakota, USA	Norton and Redden (1990)	AM75_631