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 Magnetite at Metropolitan Mine, Metropolitan, Menominee Iron Range, Dickinson Co., Michigan, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1703.29Ma - 1507.51Ma at this locality

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Dated Locality ID	Dated Locality	Ref	Ref ID
USGS-Rb-Sr-00912	1556.45	1556.45		16267	Metropolitan Mine, Metropolitan, Menominee Iron Range, Dickinson Co., Michigan, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00913	1703.29	1703.29	Muscovite	16267	Metropolitan Mine, Metropolitan, Menominee Iron Range, Dickinson Co., Michigan, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00915	1507.51	1507.51		16267	Metropolitan Mine, Metropolitan, Menominee Iron Range, Dickinson Co., Michigan, USA	USGS-Rb-Sr	USGS-Rb-Sr