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 Montmorillonite at Želechov Valley, Košťálov, Semily District, Liberec Region, Czech Republic

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 280Ma - 280Ma at this locality

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
sedcu-00380	280	280			Cu	18478	Želechov Valley, Košťálov, Semily District, Liberec Region, Czech Republic	Cox et al. (2003)	USGSOFR03_107