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 Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1458.93Ma - 1346.46Ma at this locality

Direct 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
USGS-Rb-Sr-04182	1386.46	1346.46	Muscovite			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04187	1458.93	1418.93	Muscovite			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr

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
USGS-Rb-Sr-04180	1312.15	1272.15				115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04181	1312.15	1272.15				115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04183	1386.46	1346.46	Microcline			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04184	1386.46	1346.46				115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04185	1380.67	1340.67				115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04186	1380.67	1340.67	Microcline			115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04188	1458.93	1418.93				115491	Giant Crystal Mine, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr