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 Opal at Amelia Co., Virginia, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 253.01Ma - 253.01Ma 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
Alexandra-0192	253.01	253.01				4200	Morefield Mine (Morefield Pegmatite), Winterham, Amelia Co., Virginia, 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-0192	253.01	253.01				4200	Morefield Mine (Morefield Pegmatite), Winterham, Amelia Co., Virginia, USA	Bradley et al. (2016)	CM54_945