Ages for Prehnite at King Co., Washington, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 25Ma - 25Ma 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
  PorphCu-00062	25	25		Ankerite, Arsenopyrite, Chalcocite, Chalcopyrite, Cosalite, Covellite, Epidote, Galena, Gold, Molybdenite, Prehnite, Pyrite, Pyrrhotite, Siderite, Sphalerite	Cu	21957	Condor-Hemlock Mine (Condor Mine; Hemlock Mine; Pegasus Claim; Green Crystal Claim), Snoqualmie Pass, Middle Fork Of The Snoqualmie River, Snoqualmie & Burns Districts, King Co., Washington, USA	Singer et al. (2008)	USGSOFR2008_1155

• Specified 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
  PorphCu-00062	25	25		Ankerite, Arsenopyrite, Chalcocite, Chalcopyrite, Cosalite, Covellite, Epidote, Galena, Gold, Molybdenite, Prehnite, Pyrite, Pyrrhotite, Siderite, Sphalerite	Cu	21957	Condor-Hemlock Mine (Condor Mine; Hemlock Mine; Pegasus Claim; Green Crystal Claim), Snoqualmie Pass, Middle Fork Of The Snoqualmie River, Snoqualmie & Burns Districts, King Co., Washington, USA	Singer et al. (2008)	USGSOFR2008_1155

• 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
  PorphCu-00632	18	18		Bornite, Brochantite, Chalcopyrite, Digenite, Epidote, Gold, Magnetite, Molybdenite, Pyrite, Pyrrhotite, Scheelite, Sphalerite	Cu	209835	North Fork Cu Deposit, North Fork Of The Snoqualmie River, King Co., Washington, USA	Singer et al. (2008)	USGSOFR2008_1155