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 Hainan, China

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 960Ma - 90Ma 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
Kristen002432	960	830			Fe,Cu,Co	17046	Shilu Mine, Changjiang Co., Hainan, China	Xu et al. (2013)	OGR53_318
Kristen002435	130	90				17046	Shilu Mine, Changjiang Co., Hainan, China	Xu et al. (2013)	OGR53_318

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
Kristen002432	960	830			Fe,Cu,Co	17046	Shilu Mine, Changjiang Co., Hainan, China	Xu et al. (2013)	OGR53_318
Kristen002433	830	360				17046	Shilu Mine, Changjiang Co., Hainan, China	Xu et al. (2013)	OGR53_318
Kristen002434	250	210				17046	Shilu Mine, Changjiang Co., Hainan, China	Xu et al. (2013)	OGR53_318
Kristen002435	130	90				17046	Shilu Mine, Changjiang Co., Hainan, China	Xu et al. (2013)	OGR53_318
ree-00297	66	0				145093	Sailao REE Deposit, Qionghai Co., Hainan, China	Orris and Grauch (2002)	USGSOFR02_189
ree-00298	66	0				145092	Wuzhuang Mine, Wanning Co., Hainan, China	Orris and Grauch (2002)	USGSOFR02_189