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 Columbite-(Fe) at Ramona District, San Diego Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 99Ma - 95Ma 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
Bradley_2012_014	99	95	Muscovite			3561	Little Three Mine (Little 3 Mine), Ramona, Ramona District, San Diego Co., California, USA	McCauley and Bradley (2014)	CM52_183

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
Bradley_2012_014	99	95	Muscovite			3561	Little Three Mine (Little 3 Mine), Ramona, Ramona District, San Diego Co., California, USA	McCauley and Bradley (2014)	CM52_183