Ages for Quartz at Presidio Co., Texas, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 60.5Ma - 26Ma 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-00086	60.5	59.9		Chalcopyrite, Pyrite	Cu	30976	Red Hills Cu-Mo Deposit, Shafter District, Presidio Co., Texas, USA	Singer et al. (2008)	USGSOFR2008_1155
  NAVDAT-4700	38	26				42436	Mammoth Mine (Quinn Creek Mine; Valentine Mine), Presidio Co., Texas, 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-37267	35.42	35.18				43702	Solitario, Presidio Co., Texas, USA	NAVDAT	NAVDAT
  NAVDAT-37268	35.12	34.88				42707	Unnamed Mine (EM-PR-U24-5), Solitario, Presidio Co., Texas, USA	NAVDAT	NAVDAT
  NAVDAT-37269	35.12	34.88				42642	Unnamed Locality (EM-PR-U24-3), Solitario, Presidio Co., Texas, USA	NAVDAT	NAVDAT
  NAVDAT-4700	38	26				42436	Mammoth Mine (Quinn Creek Mine; Valentine Mine), Presidio Co., Texas, USA	NAVDAT	NAVDAT
  PorphCu-00086	60.5	59.9		Chalcopyrite, Pyrite	Cu	30976	Red Hills Cu-Mo Deposit, Shafter District, Presidio Co., Texas, USA	Singer et al. (2008)	USGSOFR2008_1155