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 Eureka Farm 99, Usakos, Karibib, Erongo Region, Namibia

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 541Ma - 444Ma at this locality

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
Jen_0000876	520	480				126176	Eureka Farm 99, Usakos, Karibib, Erongo Region, Namibia	Woolley and Kjarsgaard (2008)	GSCOF5796
ree-00477	541	444				126176	Eureka Farm 99, Usakos, Karibib, Erongo Region, Namibia	Orris and Grauch (2002)	USGSOFR02_189