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 Stilpnomelane at Kiwada Mine, Iwakuni City, Yamaguchi, Japan

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 98.7Ma - 92.9Ma at this locality

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
Kristen001929	98.7	92.9	Muscovite			185505	Kiwada Mine, Iwakuni City, Yamaguchi, Japan	Shibata and Ishihara (1974)	EG69_1207

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
Kristen001927	97.4	91.8	Muscovite			11275	Fujigatani Mine, Iwakuni City, Yamaguchi, Japan	Shibata and Ishihara (1974)	EG69_1207
Kristen001928	95.8	88.4	Muscovite			11275	Fujigatani Mine, Iwakuni City, Yamaguchi, Japan	Shibata and Ishihara (1974)	EG69_1207