Ages for Muscovite at Fairfield Co., Connecticut, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 369Ma - 366Ma at this locality

• Age range from children

• 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
  Alexandra-0319	369	366	Muscovite			6816	Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA	Spooner and Fairbairn (1970)	GSAB81_3663

• Direct 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
  Alexandra-0194	337.5	333.5	Muscovite			275695	Branchville, Redding (Reading), Fairfield Co., Connecticut, USA	Bradley et al. (2016)	CM54_945
  Alexandra-0319	369	366	Muscovite			6816	Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA	Spooner and Fairbairn (1970)	GSAB81_3663

• 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
  Alexandra-0318	367	363	Uraninite			6816	Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA	Spooner and Fairbairn (1970)	GSAB81_3663
  USGS-Rb-Sr-01153	434.43	414.43				251457	Exit 24 Interstate Highway 95, Fairfield, Fairfield Co., Connecticut, USA	USGS-Rb-Sr	USGS-Rb-Sr
  USGS-Rb-Sr-01154	424.08	404.08				251457	Exit 24 Interstate Highway 95, Fairfield, Fairfield Co., Connecticut, USA	USGS-Rb-Sr	USGS-Rb-Sr