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 Unnamed Occurrence (ARDF - BN117; Left Fork), Kougarok District, Nome Census Area, Alaska, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 125Ma - 101Ma at this locality

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Dated Locality ID	Dated Locality	Ref	Ref ID
USGS-Rb-Sr-06596	125	111		200557	Unnamed Occurrence (ARDF - BN117; Left Fork), Kougarok District, Nome Census Area, Alaska, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06597	125	111	Muscovite	200557	Unnamed Occurrence (ARDF - BN117; Left Fork), Kougarok District, Nome Census Area, Alaska, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06602	109	101		200557	Unnamed Occurrence (ARDF - BN117; Left Fork), Kougarok District, Nome Census Area, Alaska, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06603	109	101	Muscovite	200557	Unnamed Occurrence (ARDF - BN117; Left Fork), Kougarok District, Nome Census Area, Alaska, USA	USGS-Rb-Sr	USGS-Rb-Sr