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 Johnson Camp, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 53Ma - 53Ma 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
PorphCu-00090	53	53		Aurichalcite, Bornite, Calcite, Chalcopyrite, Chrysocolla, Cuprite, Diopside, Epidote, Fluorite, Galena, Hematite, Jarosite, Kaolinite, Magnetite, Molybdenite, Montmorillonite, Pyrite, Scheelite, Tenorite, Tremolite	Cu	32440	Johnson Mine (Johnson Pit; Burro Pit; Climax Shaft; Johnson Camp Mine; Cyprus Johnson Deposit), Johnson Camp, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA	Singer et al. (2008)	USGSOFR2008_1155

Specified 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
PorphCu-00090	53	53		Aurichalcite, Bornite, Calcite, Chalcopyrite, Chrysocolla, Cuprite, Diopside, Epidote, Fluorite, Galena, Hematite, Jarosite, Kaolinite, Magnetite, Molybdenite, Montmorillonite, Pyrite, Scheelite, Tenorite, Tremolite	Cu	32440	Johnson Mine (Johnson Pit; Burro Pit; Climax Shaft; Johnson Camp Mine; Cyprus Johnson Deposit), Johnson Camp, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA	Singer et al. (2008)	USGSOFR2008_1155

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
Michelle_554	0	0		Whewellite		15570	Cochise Co., Arizona, USA	Hofmann and Bernasconi (1998)	CG149_127