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 Keystone Mine, Roberts District, Eureka Co., Nevada, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 36.3Ma - 29.7Ma 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
NAVDAT-117327	36.3	29.7				60671	Keystone Mine, Roberts District, Eureka Co., Nevada, USA	NAVDAT	NAVDAT
NAVDAT-9747	36.3	29.7				60671	Keystone Mine, Roberts District, Eureka Co., Nevada, USA	NAVDAT	NAVDAT