Ages for Microcline at Castalia Quarry, Franklin Co., North Carolina, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 326Ma - 290.73Ma 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-02256	315.33	303.33				250207	Castalia Quarry, Franklin Co., North Carolina, USA	USGS-Rb-Sr	USGS-Rb-Sr
  USGS-Rb-Sr-02257	290.73	290.73				250207	Castalia Quarry, Franklin Co., North Carolina, USA	USGS-Rb-Sr	USGS-Rb-Sr
  USGS-Rb-Sr-02258	315.33	303.33				250207	Castalia Quarry, Franklin Co., North Carolina, USA	USGS-Rb-Sr	USGS-Rb-Sr
  USGS-Rb-Sr-02259	315.33	303.33				250207	Castalia Quarry, Franklin Co., North Carolina, USA	USGS-Rb-Sr	USGS-Rb-Sr
  USGS-Rb-Sr-02260	315.33	303.33				250207	Castalia Quarry, Franklin Co., North Carolina, USA	USGS-Rb-Sr	USGS-Rb-Sr
  USGS-Rb-Sr-02978	326	300				250207	Castalia Quarry, Franklin Co., North Carolina, USA	USGS-Rb-Sr	USGS-Rb-Sr