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 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

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
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-06602	109	101				200557	Unnamed Occurrence (ARDF - BN117; Left Fork), Kougarok District, Nome Census Area, Alaska, USA	USGS-Rb-Sr	USGS-Rb-Sr

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
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

Mineralization 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
vms-01006	390	390			S	200428	Trio Occurrence, Tok District, Southeast Fairbanks Census Area, Alaska, USA	Moiser et al. (2009)	USGSOFR2009_1034