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 Orthoclase at Tucson Mica Property, Black Mountain, Black Mountain District, Pinal Co., Arizona, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1180Ma - 138Ma at this locality

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
Giersdorf_00000325	1180	1120				252659	Black Mountain, Black Mountain District, Pinal Co., Arizona, USA	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000344	144	138				252659	Black Mountain, Black Mountain District, Pinal Co., Arizona, USA	Shafiqullah et al. (1980)	AGSD12_201