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 Chrysotile at Foothill Copper Belt, Calaveras Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 100Ma - 100Ma 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
Mo-00156	100	100		Molybdenite	Mo	16293	Calaveras Co., California, USA	Brock (1972)	GSAB83_3391

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-00065	281	281			Cr	75959	Stone Mine (Trask Mine; Longton Mine; Coffer Mine; Trask And Stone Lease), Copperopolis, Foothill Copper Belt, Calaveras Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00066	281	281			Cr	76180	Walker Mine (Chaparral; Brushy Hill), Carmen City, Foothill Copper Belt, Calaveras Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00067	281	281			Cr	75050	Clary And Langford Mine (Langford Deposit; Porter And Spring; Porter And Springs; Nassau), Carmen City, Foothill Copper Belt, Calaveras Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00075	281	281			Cr	76180	Walker Mine (Chaparral; Brushy Hill), Carmen City, Foothill Copper Belt, Calaveras Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
vms-01034	170	170			S	75449	Keystone-Union Mine (Calaveras Copper), Copperopolis Mines (Copperopolis Group), Copperopolis, Foothill Copper Belt, Calaveras Co., California, USA	Moiser et al. (2009)	USGSOFR2009_1034
vms-01037	170	170			S	13833	North Keystone Mine (Keystone Mine), Copperopolis Mines (Copperopolis Group), Copperopolis, Foothill Copper Belt, Calaveras Co., California, USA	Moiser et al. (2009)	USGSOFR2009_1034
vms-01039	170	170			S	9552	Penn Mine (Happy Jack; West Constellation; Satellite; Big Satellite; Hinkcley; Blue Jay; Meteor; Hecla; Little Satellite; Copper Hill; Penn Chemical Works; Campo Seco), Campo Seco, Campo Seco District, Foothill Copper Belt, Calaveras Co., California, USA	Moiser et al. (2009)	USGSOFR2009_1034
vms-01040	170	170			S	75795	Quail Hill Mine (Eagle Mine; Eagle Copper And Silver Mine), Telegraph City, Foothill Copper Belt, Calaveras Co., California, USA	Moiser et al. (2009)	USGSOFR2009_1034

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