Ages for Opal at Tyrone Area, Burro Mountains District, Grant Co., New Mexico, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of Ma - Ma 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
  PorphCu-00015	56	55		Brochantite, Chalcanthite, Chalcocite, Chalcopyrite, Copper, Kaolinite, Libethenite, Magnetite, Molybdenite, Pyrite, Sphalerite, Torbernite, Turquoise	Cu	4464	Tyrone Mine, Tyrone Area, Burro Mountains District, Grant Co., New Mexico, USA	Singer et al. (2008)	USGSOFR2008_1155