Ages for Sphalerite at Gray Dawn Mine (Little Don Mine; Grey Dawn), Paradox Valley District, Paradox Valley, San Juan Co., Utah, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 70Ma - 65Ma 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
  Giersdorf_00000602	65	65	Uraninite	Coffinite, Uraninite		38660	Gray Dawn Mine (Little Don Mine; Grey Dawn), Paradox Valley District, Paradox Valley, San Juan Co., Utah, USA	Miller et al. (1963)	GSAB74_609
  Giersdorf_00000603	70	70	Uraninite	Coffinite, Uraninite		38660	Gray Dawn Mine (Little Don Mine; Grey Dawn), Paradox Valley District, Paradox Valley, San Juan Co., Utah, USA	Miller et al. (1963)	GSAB74_609

• Locality age (deprioritized)

• 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
  Giersdorf_00000604	240	240	Uraninite	Coffinite, Uraninite		38660	Gray Dawn Mine (Little Don Mine; Grey Dawn), Paradox Valley District, Paradox Valley, San Juan Co., Utah, USA	Miller et al. (1963)	GSAB74_609