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 Magnesiochromite at Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 300Ma - 300Ma 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
podchrome-00082	300	300			Cr	75545	Madrid Mine (True Blue Mine; Genochio Mine; Medrid Mine), Murphys, Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157

Mineralization 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
podchrome-00082	300	300			Cr	75545	Madrid Mine (True Blue Mine; Genochio Mine; Medrid Mine), Murphys, Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00083	300	300			Cr	76160	Valenti Claim, Soapstone Hill, Murphys, Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157

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
Mo-00156	100	100		Molybdenite	Mo	16293	Calaveras Co., California, USA	Brock (1972)	GSAB83_3391