Ages for Magnesite at Grass Valley District, Nevada Co., California, USA

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

• 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
  podchrome-00170	157	157			Cr	84595	Porter Property, Newtown, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00172	157	157			Cr	84455	Mulcahy Prospect, Newtown, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00173	157	157			Cr	83973	Codd Prospects, Newtown, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00174	157	157			Cr	84231	Holseman Mine, Grass Valley, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00175	157	157			Cr	83807	Alta Hill Mine (Alta Hill; Alta Hill Chrome Mine), Grass Valley, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00176	157	157			Cr	84753	Spring Hill Occurrence, Grass Valley, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00177	157	157			Cr	84124	Geach Property, Grass Valley, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00180	204	204			Cr	84039	Dickerson Property, Grass Valley, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00181	204	204			Cr	83896	Bowden Prospect, La Barr Meadows, Grass Valley District, Nevada Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157