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-(Mn) at Hampshire Co., Massachusetts, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 373Ma - 336.3Ma 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_067	373	369	Zircon			5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	McCauley and Bradley (2014)	CM52_183
Alexandra-0184	341.9	336.3	Muscovite			5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	Bradley et al. (2016)	CM54_945

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
Alexandra-0183	370.89	370.59	Zircon			5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	Bradley et al. (2016)	CM54_945
Alexandra-0184	341.9	336.3	Muscovite			5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	Bradley et al. (2016)	CM54_945
Bradley_2012_067	373	369	Zircon			5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	McCauley and Bradley (2014)	CM52_183