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 Muscovite at Quartzburg District (Comer District), Grant Co., Oregon, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 54.8Ma - 33.7Ma 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
NAVDAT-10715	54.8	33.7				149165	Gold Prospect (MRDS - 10036650), Quartzburg District (Comer District), Grant Co., Oregon, USA	NAVDAT	NAVDAT

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
NAVDAT-10325	54.8	23.8				151765	Stithum Mine, Quartzburg District (Comer District), Grant Co., Oregon, USA	NAVDAT	NAVDAT
NAVDAT-10713	144	65				148970	Gladys Occurrence (Kayuse), Quartzburg District (Comer District), Grant Co., Oregon, USA	NAVDAT	NAVDAT
NAVDAT-10715	54.8	33.7				149165	Gold Prospect (MRDS - 10036650), Quartzburg District (Comer District), Grant Co., Oregon, USA	NAVDAT	NAVDAT
NAVDAT-10721	206	65				147992	Charlie Q. Occurrence (Leslie Ray; Ran 1; Sadie Bell 1-2; Ruth Tee Ann; Sharyl Ann; Mary Lou; Short Rock; Tory D.; Dana Lou; Wilma L.), Quartzburg District (Comer District), Grant Co., Oregon, USA	NAVDAT	NAVDAT
NAVDAT-10725	206	65				147729	Boulder Group (Boulder Ridge Mining Company; Cobalt Gold Mines Inc.), Quartzburg District (Comer District), Grant Co., Oregon, USA	NAVDAT	NAVDAT