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 Opal at Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 164Ma - 164Ma 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-00323	164	164			Cr	80774	Great Western Mine (Laguna Western; Black Bart Mine; Tucker Lease), Great Western-Mirabel Group, Middletown, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157

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
Hg-00110	2.9	0		Cinnabar, Mercury, Metacinnabar, Schuetteite, Tiemannite	Hg	80795	East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Smith et al. (2008)	EPSL269_399
NAVDAT-130378	1.07	1.03				80901	Unnamed Cr Occurrence (6), Cobb, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	NAVDAT	NAVDAT
NAVDAT-130384	1.68	1.64				229400	Caldwell Pines, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	NAVDAT	NAVDAT
podchrome-00074	164	164			Cr	80834	Kangaroo Court Mine, Middletown, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00274	164	164			Cr	80893	Sutro Mine, Middletown, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00323	164	164			Cr	80774	Great Western Mine (Laguna Western; Black Bart Mine; Tucker Lease), Great Western-Mirabel Group, Middletown, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00324	164	164			Cr	80785	Butler Claims, Detert Reservoir, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00325	172	166	Zircon		Cr	80817	Gunn Claim, Caldwell Pines, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00326	172	166	Zircon		Cr	80820	Harp And Sons Ranch Deposits, Middletown, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00327	164	164			Cr	80827	Holmstatt Deposit (Holmstedt Deposit), Middletown, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Lake Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157