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 Larimer Co., Colorado, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1704.13Ma - 1346.46Ma 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
USGS-Rb-Sr-04119	1704.13	1624.13				115455	Ball Scheelite Mine, Horsetooth Mountain Area, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
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

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
NAVDAT-3774	27.5	26.5	Sanidine			115510	Iron Mountain, Larimer Co., Colorado, USA	NAVDAT	NAVDAT
USGS-Rb-Sr-04116	1440.04	1340.04				115500	H E & M No. 9 Occurrence, Crystal Mountain Pegmatite District (Storm Mountain District), Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04119	1704.13	1624.13				115455	Ball Scheelite Mine, Horsetooth Mountain Area, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04137	1410.67	1310.67				115536	Mint Quarry, Masonville District, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04144	1410.25	1350.25				115482	Davis Nickel Prospect, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04170	1439.41	1399.41				134587	Highway 34 Roadcut, Estes Park, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
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
USGS-Rb-Sr-04321	1802.86	1642.86	Microcline			115540	Mt. Olympus Mine (Mt. Olympus No. 2), Poudre Park Area, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04322	1802.86	1642.86				115540	Mt. Olympus Mine (Mt. Olympus No. 2), Poudre Park Area, Larimer Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr