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 Orthoclase at Black Elk Peak (Harney Peak), Pennington Co., South Dakota, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1725Ma - 1695Ma at this locality

Locality age (prioritized)

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
Jen_0000007	1725	1695				122418	Black Elk Peak (Harney Peak), Pennington Co., South Dakota, USA	Černý (1991)	PR51_429
Jen_0000007a	1718	1712	Zircon			122418	Black Elk Peak (Harney Peak), Pennington Co., South Dakota, USA	Černý (1991)	PR51_429

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
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
Jen_0000007b	2160	2000				122418	Black Elk Peak (Harney Peak), Pennington Co., South Dakota, USA	Černý (1991)	PR51_429
Jen_0000007c	2400	2000				122418	Black Elk Peak (Harney Peak), Pennington Co., South Dakota, USA	Černý (1991)	PR51_429