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 Topaz at Coos Co., New Hampshire, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 171Ma - 165Ma 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
AREPS5_257-00034	171	171				9117	North Baldface Mountain Localities, Bean's Purchase, Coos Co., New Hampshire, USA	Zartman (1977)	AREPS5_257
AREPS5_257-00036	165	165				6133	North Percy Peak Locality, Stratford, Coos Co., New Hampshire, USA	Zartman (1977)	AREPS5_257

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
AREPS5_257-00016	165	165				6132	South Percy Peak Locality, Stratford, Coos Co., New Hampshire, USA	Zartman (1977)	AREPS5_257
AREPS5_257-00034	171	171				9117	North Baldface Mountain Localities, Bean's Purchase, Coos Co., New Hampshire, USA	Zartman (1977)	AREPS5_257
AREPS5_257-00036	165	165				6133	North Percy Peak Locality, Stratford, Coos Co., New Hampshire, USA	Zartman (1977)	AREPS5_257
vms-01066	470	470			S	6001	Milan Mine (Nay-Fogg Mine; Copperville Mine), Milan, Coos Co., New Hampshire, USA	Moiser et al. (2009)	USGSOFR2009_1034