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 Hematite at Gold Bar Mine (O'Brien Mine; Little Jim; Jenny Lynn; Interior Mining And Trust Co. Mine; Homestake; Crown; Black Bear), Amazon Wash, Constellation, Black Rock District, Yavapai Co., Arizona, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 114Ma - 108Ma 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_00000347	114	108				46724	Constellation, Black Rock District, Yavapai Co., Arizona, USA	Shafiqullah et al. (1980)	AGSD12_201