Ages for Natrolite at Cowlitz Co., Washington, 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-12884	35.6	32.2				17952	Signal Peak, Cowlitz Co., Washington, USA	NAVDAT	NAVDAT
  NAVDAT-29430	39.6	32.4				15515	Elk Mountain, Toutle, Cowlitz Co., Washington, USA	NAVDAT	NAVDAT
  NAVDAT-29447	39.6	32.4				15515	Elk Mountain, Toutle, Cowlitz Co., Washington, USA	NAVDAT	NAVDAT
  NAVDAT-29451	39.6	32.4				15515	Elk Mountain, Toutle, Cowlitz Co., Washington, USA	NAVDAT	NAVDAT
  NAVDAT-41524	39	36				15037	Silver Lake Railroad Trestle, Silver Lake, Cowlitz Co., Washington, USA	NAVDAT	NAVDAT
  NAVDAT-41543	39	37				253817	Silver Lake, Cowlitz Co., Washington, USA	NAVDAT	NAVDAT