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 Uraninite at Big Chief Occurrence (Spanish Trails; Rainbow; Eagle), San Rafael District (San Rafael Swell), Emery Co., Utah, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 117Ma - 82Ma at this locality

Direct 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
Giersdorf_00000547	86	82	Uraninite	Uraninite	U	180697	Calyx No. 8, Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA	Miller et al. (1963)	GSAB74_609
Giersdorf_00000548	96	86	Uraninite	Uraninite	U	180697	Calyx No. 8, Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA	Miller et al. (1963)	GSAB74_609
Giersdorf_00000550	104	100	Uraninite	Uraninite	U	182883	North Mesa 9 & 10, North Mesa Mine Group, Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA	Miller et al. (1963)	GSAB74_609
Giersdorf_00000551	117	97	Uraninite	Uraninite	U	182883	North Mesa 9 & 10, North Mesa Mine Group, Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA	Miller et al. (1963)	GSAB74_609

Direct age (deprioritized) (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
Giersdorf_00000549	410	260	Uraninite	Uraninite	U	180697	Calyx No. 8, Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA	Miller et al. (1963)	GSAB74_609
Giersdorf_00000552	335	185	Uraninite	Uraninite	U	182883	North Mesa 9 & 10, North Mesa Mine Group, Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA	Miller et al. (1963)	GSAB74_609