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 Opal at Chizhou, Anhui, China

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 140.6Ma - 133.9Ma 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
Michelle_0003	140.6	135.6	Molybdenite	Quartz	Mo	216320	Qingyang Co., Chizhou, Anhui, China	Sun et al. (2003)	EG98_175
Michelle_0004	138.9	133.9	Molybdenite	Quartz	Mo	216320	Qingyang Co., Chizhou, Anhui, China	Sun et al. (2003)	EG98_175

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
Chen2007tbl01-33	145	66		Chalcopyrite, Gold, Magnetite, Pyrite, Pyrrhotite		145644	Tongshan Mine (West Tongshan Mine), Guichi District, Chizhou, Anhui, China	Chen et al. (2007)	OGR31_139
Michelle_0003	140.6	135.6	Molybdenite	Quartz	Mo	216320	Qingyang Co., Chizhou, Anhui, China	Sun et al. (2003)	EG98_175
Michelle_0004	138.9	133.9	Molybdenite	Quartz	Mo	216320	Qingyang Co., Chizhou, Anhui, China	Sun et al. (2003)	EG98_175