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 Cryptomelane at Nevel Quarry (Twin Tunnels; United Feldspar Quarry), Newry, Oxford Co., Maine, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 295Ma - 293Ma 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
Be-00026	293	293		Gainesite	Be	5940	Nevel Quarry (Twin Tunnels; United Feldspar Quarry), Newry, Oxford Co., Maine, USA	Wise and Brown (2010)	JG55_3
Grew_Li_2019_0040	295	295		Gainesite		5940	Nevel Quarry (Twin Tunnels; United Feldspar Quarry), Newry, Oxford Co., Maine, USA	Bradley et al. (2016)	CM54_945