Ages for Graftonite-(Ca) at Michałkowa Pegmatites, Gmina Świdnica, Świdnica Co., Lower Silesian Voivodeship, Poland

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 383.1Ma - 366Ma 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
  Alexandra-0156	374	366	Muscovite	Fluorapatite, Lazulite, Maneckiite		27557	Michałkowa Pegmatites, Gmina Świdnica, Świdnica Co., Lower Silesian Voivodeship, Poland	Breemen et al. (1988)	ASGP58_3
  Alexandra-0157	383	370	Zircon	Fluorapatite, Lazulite, Maneckiite		27557	Michałkowa Pegmatites, Gmina Świdnica, Świdnica Co., Lower Silesian Voivodeship, Poland	Timmermann et al. (2000)	JGS157_265
  Alexandra-0158	378.9	376.3		Fluorapatite, Lazulite, Maneckiite		27557	Michałkowa Pegmatites, Gmina Świdnica, Świdnica Co., Lower Silesian Voivodeship, Poland	Pieczka et al. (2017)	MM81_723
  Alexandra-0159	383.1	378.3	Uraninite	Fluorapatite, Lazulite, Maneckiite		27557	Michałkowa Pegmatites, Gmina Świdnica, Świdnica Co., Lower Silesian Voivodeship, Poland	Pieczka et al. (2017)	MM81_723