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 Montmorillonite at El Paso Co., Colorado, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1030.013Ma - 1015Ma 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
Jen_0000148	1030.013	1029.987				65416	Pikes Peak Batholith Miarolitic Cavities, Pikes Peak, El Paso Co., Colorado, USA	Anderson (1983)	GSAM161_133
Jen_0000008	1015	1015				65416	Pikes Peak Batholith Miarolitic Cavities, Pikes Peak, El Paso Co., Colorado, USA	Černý (1991)	PR51_429

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
Bradley_2012_132	1079	1075				3668	Pikes Peak, El Paso Co., Colorado, USA	McCauley and Bradley (2014)	CM52_183
Jen_0000008	1015	1015				65416	Pikes Peak Batholith Miarolitic Cavities, Pikes Peak, El Paso Co., Colorado, USA	Černý (1991)	PR51_429
Jen_0000148	1030.013	1029.987				65416	Pikes Peak Batholith Miarolitic Cavities, Pikes Peak, El Paso Co., Colorado, USA	Anderson (1983)	GSAM161_133
USGS-Rb-Sr-00213	1107.21	1007.21				3668	Pikes Peak, El Paso Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr