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 Gold at Las Guijas Mine Group (Immense Lode; Grand Lode; General Electric Mine; General Electric Group Of Claims; Obregon Claims; Black Gold Group), Las Guijas Mts, Arivaca District (Las Guijas District), Las Guijas & San Luis Mts, Pima Co., Arizona, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 70Ma - 67.2Ma 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_00000355	70	67.2				31250	Arivaca District (Las Guijas District), Las Guijas & San Luis Mts, Pima Co., Arizona, USA	Shafiqullah et al. (1980)	AGSD12_201