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 Chalcocite at Keweenaw Copper, Gogebic Co., Michigan, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1500Ma - 1500Ma 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
sedcu-00656	1500	1500			Cu	123960	Presque Isle Syncline Occurrence (Western Syncline; Amax Michigan), Keweenaw Copper, Gogebic Co., Michigan, USA	Cox et al. (2003)	USGSOFR03_107

Mineralization 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
sedcu-00656	1500	1500			Cu	123960	Presque Isle Syncline Occurrence (Western Syncline; Amax Michigan), Keweenaw Copper, Gogebic Co., Michigan, USA	Cox et al. (2003)	USGSOFR03_107