Ages for Quartz at Horse Ridge Mine, Yancey Co., North Carolina, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1229.2Ma - 347.51Ma 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
  USGS-Rb-Sr-02297	347.51	347.51				102508	Horse Ridge Mine, Yancey Co., North Carolina, USA	USGS-Rb-Sr	USGS-Rb-Sr
  USGS-U-Th-Pb-00241_206_238	1072.1	1072.1	Zircon			102508	Horse Ridge Mine, Yancey Co., North Carolina, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
  USGS-U-Th-Pb-00241_207_206	1229.2	1229.2	Zircon			102508	Horse Ridge Mine, Yancey Co., North Carolina, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
  USGS-U-Th-Pb-00241_207_235	1125.2	1125.2	Zircon			102508	Horse Ridge Mine, Yancey Co., North Carolina, USA	USGS-U-Th-Pb	USGS-U-Th-Pb