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 Krennerite at Ward District, Boulder Co., Colorado, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 61Ma - 57Ma at this locality

Age range from children

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
NAVDAT-32719	61	57				110316	New Rival - Black Rose, Ward District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT

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
NAVDAT-16628	65	55				110280	Modoc, Ward District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32719	61	57				110316	New Rival - Black Rose, Ward District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT