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 Birnessite at Yokoji Mine, Yamagata, Kuji City, Iwate, Japan

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 133.6Ma - 112Ma 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
Mo-00294	133.6	122.4	Molybdenite		Mo	106920	Ohkawame Mine (Okawame Mine), Kuji City, Iwate, Japan	Suzuki et al. (1996)	GCA60_3151
Mo-00295	119.8	112	Molybdenite		Mo	106920	Ohkawame Mine (Okawame Mine), Kuji City, Iwate, Japan	Suzuki et al. (1996)	GCA60_3151