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 Muscovite at Black Rock Group, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1420.01Ma - 1419.99Ma 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
Jen_0000113	1420.01	1419.99	Zircon			32616	Tungsten King Mine (Tungsten King Group Of Claims; Tungsten Queen Group Of Claims), Black Rock Group, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA	Anderson (1983)	GSAM161_133

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_0000113	1420.01	1419.99	Zircon			32616	Tungsten King Mine (Tungsten King Group Of Claims; Tungsten Queen Group Of Claims), Black Rock Group, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA	Anderson (1983)	GSAM161_133

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
Michelle_554	0	0		Whewellite		15570	Cochise Co., Arizona, USA	Hofmann and Bernasconi (1998)	CG149_127