Ages for Dolomite at Ruby Basin District, Lawrence Co., South Dakota, 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
  NAVDAT-4722	55	40				121686	Astoria Shaft, Ruby Basin District, Lawrence Co., South Dakota, USA	NAVDAT	NAVDAT
  NAVDAT-4724	55	40				121686	Astoria Shaft, Ruby Basin District, Lawrence Co., South Dakota, USA	NAVDAT	NAVDAT
  NAVDAT-4725	55	40				121808	National Gold And Silver Company Mine, Ruby Basin District, Lawrence Co., South Dakota, USA	NAVDAT	NAVDAT