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 Muscovite at Niagara Township, Marinette Co., Wisconsin, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1738.2Ma - 782.2Ma at this locality

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Dated Locality ID	Dated Locality	Ref	Ref ID
USGS-U-Th-Pb-00122_206_238	997.8	967.8	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00122_207_206	1703.1	1653.1	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00122_207_235	1241.9	1205.9	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00123_206_238	1002.7	972.7	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00123_207_206	1706.9	1654.9	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00123_207_235	1246.8	1210.8	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00124_206_238	1077.2	1047.2	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00124_207_206	1738.2	1686.2	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00124_207_235	1317.9	1277.9	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00125_206_238	806.2	782.2	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00125_207_206	1613.8	1565.8	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00125_207_235	1051.3	1021.3	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb