Ages for Prehnite at Huerfano Co., Colorado, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 23.5Ma - 21.3Ma 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
  NAVDAT-1412	23.5	21.5				159180	Copper Bull Mine, La Veta Pass Area, Huerfano Co., Colorado, USA	NAVDAT	NAVDAT
  NAVDAT-1402	23.3	21.3				145248	Mount Mestas, La Veta Pass Area, Huerfano Co., Colorado, USA	NAVDAT	NAVDAT

• 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
  NAVDAT-1402	23.3	21.3				145248	Mount Mestas, La Veta Pass Area, Huerfano Co., Colorado, USA	NAVDAT	NAVDAT
  NAVDAT-1410	27.2	21.3				114566	Wayatoya Creek Placer, La Veta District, Huerfano Co., Colorado, USA	NAVDAT	NAVDAT
  NAVDAT-1412	23.5	21.5				159180	Copper Bull Mine, La Veta Pass Area, Huerfano Co., Colorado, USA	NAVDAT	NAVDAT
  ree-00665	541	495				114567	Wet Mountains Prospect, Huerfano Co., Colorado, USA	Orris and Grauch (2002)	USGSOFR02_189