Ages for Galena at Snohomish Co., Washington, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 28Ma - 21Ma 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-00055	28	28		Arsenopyrite, Bornite, Chalcopyrite, Epidote, Galena, Kaolinite, Molybdenite, Pyrite, Pyrrhotite, Scheelite, Sphalerite	Cu	18270	Bren-Mac Mine (Sunrise Mine), Vesper Peak, Sultan Basin, Sultan District, Snohomish Co., Washington, USA	Singer et al. (2008)	USGSOFR2008_1155
  PorphCu-00054	21	21		Arsenopyrite, Bismuth, Chalcocite, Chalcopyrite, Copper, Covellite, Cuprite, Enargite, Epidote, Galena, Gold, Marcasite, Molybdenite, Pyrite, Pyrrhotite, Realgar, Scheelite, Siderite, Sphalerite	Cu	17816	Glacier Peak Mine (Miners Ridge Mine; Calumet Mine), Plummer Mountain, Glacier Peak District, Snohomish 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-00054	21	21		Arsenopyrite, Bismuth, Chalcocite, Chalcopyrite, Copper, Covellite, Cuprite, Enargite, Epidote, Galena, Gold, Marcasite, Molybdenite, Pyrite, Pyrrhotite, Realgar, Scheelite, Siderite, Sphalerite	Cu	17816	Glacier Peak Mine (Miners Ridge Mine; Calumet Mine), Plummer Mountain, Glacier Peak District, Snohomish Co., Washington, USA	Singer et al. (2008)	USGSOFR2008_1155
  PorphCu-00055	28	28		Arsenopyrite, Bornite, Chalcopyrite, Epidote, Galena, Kaolinite, Molybdenite, Pyrite, Pyrrhotite, Scheelite, Sphalerite	Cu	18270	Bren-Mac Mine (Sunrise Mine), Vesper Peak, Sultan Basin, Sultan District, Snohomish Co., Washington, USA	Singer et al. (2008)	USGSOFR2008_1155