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 Hercynite at Shimoganya Quarry, Dohgo Island, Oki Islands, Shimane, Japan

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 84.7Ma - 63.5Ma at this locality

Locality age (remote)

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Kristen001925	84.7	78.1			19893	Tsumo Mine, Masuda, Shimane, Japan	Shibata and Ishihara (1974)	EG69_1207
Kristen001926	81.8	75.4	Phlogopite		19893	Tsumo Mine, Masuda, Shimane, Japan	Shibata and Ishihara (1974)	EG69_1207
Mo-00222	69.7	64.5	Molybdenite	Mo	218607	Hirose, Shimane, Japan	Suzuki et al. (1996)	GCA60_3151
Mo-00223	68.3	63.5	Molybdenite	Mo	218607	Hirose, Shimane, Japan	Suzuki et al. (1996)	GCA60_3151