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 Gold at Middle Fork Mines (Gold Crown Mine; Crouch; Derby Claim; Log Cabin Claim; Jacque Girl Claim), Mono School, Humbug District, Klamath Mts, Siskiyou Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 167Ma - 145Ma at this locality

Locality age (remote)

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
Kristen002448	167	145				4064	Josephine Creek Placers, Josephine Creek District, Josephine Co., Oregon, USA	Lanphere et al. (1968)	GSAB79_1027