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 Staples Quarry, Topsham, Sagadahoc Co., Maine, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 274Ma - 272Ma 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
Bradley_2012_091	274	272				5949	Standpipe Hill Quarries, Topsham, Sagadahoc Co., Maine, USA	McCauley and Bradley (2014)	CM52_183