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 Sphalerite at Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 75Ma - 5Ma 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-00242	75	5		Actinolite, Calcite, Chalcocite, Chalcopyrite, Epidote, Galena, Montmorillonite, Pyrite, Sphalerite	Cu	199759	Round Top Prospect (incl. Tim's Greisen Prospect), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, 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-00242	75	5		Actinolite, Calcite, Chalcocite, Chalcopyrite, Epidote, Galena, Montmorillonite, Pyrite, Sphalerite	Cu	199759	Round Top Prospect (incl. Tim's Greisen Prospect), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA	Singer et al. (2008)	USGSOFR2008_1155

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-00939	170	170			Cr	201406	Unnamed Occurrence (ARDF - NL003; Northwest Of Hill 1325), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00940	170	170			Cr	201408	Unnamed Occurrence (ARDF - NL005; Southwest Of Hill 2120), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00941	170	170			Cr	201407	Unnamed Occurrence (ARDF - NL004; Northwest Of Hill 2120), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00942	170	170			Cr	201409	Unnamed Occurrence (ARDF - NL006; East Of Hill 2120), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA	Moiser et al. (2012)	USGSSIR2012_5157