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 Grunerite at Park Co., Montana, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of Ma - Ma 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
Jen_0001443	4000	2500				36825	Jardine Mine (Mineral Hill Mine), Jardine Mining District (Sheepeater Mining District; Bear Gulch Mining District), Park Co., Montana, USA	Poulin et al. (2016)	CM54_1147
USGS-Rb-Sr-00411	2665.53	2541.53				162012	Hecta Prospect, New World Mining District (Cooke Mining District), Park Co., Montana, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00412	2685.34	2569.34				162012	Hecta Prospect, New World Mining District (Cooke Mining District), Park Co., Montana, USA	USGS-Rb-Sr	USGS-Rb-Sr

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
JP35_1717-00001	2906	2754				3883	Stillwater Complex, Nye, Stillwater Co., Montana, USA	Lambert et al. (1994)	JP35_1717
JP35_1717-00002	2721	2681				3883	Stillwater Complex, Nye, Stillwater Co., Montana, USA	Lambert et al. (1994)	JP35_1717