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 Chrysocolla at K-7 Tunnel, Challis, Bay Horse District, Custer Co., Idaho, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 55Ma - 40Ma at this locality

Locality 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
Giersdorf_00000283	55	40				16147	Challis, Bay Horse District, Custer Co., Idaho, USA	Moye et al. (1988)	GGCSI27_87