Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Ages for Sepiolite at Whatcom Co., Washington, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 170Ma - 0.276Ma at this locality

Age range from children

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
podchrome-00479	170	170			Cr	68896	Bumper Claim, Green Creek, Twin Sisters Mountain, Whatcom Co., Washington, USA	Moiser et al. (2012)	USGSSIR2012_5157
NAVDAT-75494	0.316	0.276				68908	Harrington Claim, Twin Sisters Mountain, Whatcom Co., Washington, USA	NAVDAT	NAVDAT

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
NAVDAT-75167	0.374	0.288		253812	Meadow Point, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75379	0.123	0.105		28933	Great Excelsior Mine (Lincoln Mine; President Mine; Excelsior Mine; Wells Creek Mine), Bearpaw Mountain, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75404	0.043	0.012		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75405	0.043	0.012		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75406	0.043	0.012		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75445	0.043	0.012		68913	King Claim, Meadow Point, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75455	0.043	0.012		253812	Meadow Point, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75456	0.043	0.012		253812	Meadow Point, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75475	0.211	0.193		28933	Great Excelsior Mine (Lincoln Mine; President Mine; Excelsior Mine; Wells Creek Mine), Bearpaw Mountain, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75494	0.316	0.276		68908	Harrington Claim, Twin Sisters Mountain, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75495	0.513	0.477		68908	Harrington Claim, Twin Sisters Mountain, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75496	0.513	0.477		68908	Harrington Claim, Twin Sisters Mountain, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75498	0.513	0.477		68908	Harrington Claim, Twin Sisters Mountain, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75499	0.513	0.477		68908	Harrington Claim, Twin Sisters Mountain, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75507	0.043	0.012		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75508	0.043	0.012		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75509	0.043	0.012		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-75648	5.3	3.6		28915	Fourth Of July Mine, Swift Creek, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-88041	1.193	1.117		28915	Fourth Of July Mine, Swift Creek, Mount Baker District, Whatcom Co., Washington, USA	NAVDAT	NAVDAT
podchrome-00479	170	170	Cr	68896	Bumper Claim, Green Creek, Twin Sisters Mountain, Whatcom Co., Washington, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00480	170	170	Cr	68898	Cultus Claim, Skookum Creek, Twin Sisters Mountain, Whatcom Co., Washington, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00481	170	170	Cr	28911	Danny Mine (Dannie Mine; Washington Chrome Mine), Nooksack River, Twin Sisters Mountain, Sisters District, Whatcom Co., Washington, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00483	170	170	Cr	18134	Ribbon Mine (Washington Chrome Mine), Green Creek, Twin Sisters Mountain, Sisters District, Whatcom Co., Washington, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00484	170	170	Cr	68928	Sisters Claim, Skookum Creek, Twin Sisters Mountain, Whatcom Co., Washington, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00485	135	135	Cr	28906	Breckenridge Creek Mine (Sumas Mountain Mine; Stein Mine), Kendall, Mount Baker District, Whatcom Co., Washington, USA	Moiser et al. (2012)	USGSSIR2012_5157