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 Polybasite at Hope Mine (Claims: Hope Nos. 1-4; Hope M. S.), Aspen District (Roaring Fork District), Pitkin Co., Colorado, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 52Ma - 52Ma 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
sedznpb-00444	52	52				30152	Aspen District (Roaring Fork District), Pitkin Co., Colorado, USA	Singer et al. (2009)	USGSOFR2009-1252