Ages for Montmorillonite at Zacatecas, Mexico

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 32Ma - 28Ma 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
  EG98_1029_tbl_1_030	32	28				4523	Fresnillo De Gonzalez Echeverria (Fresnillo), Fresnillo Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029

• 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
  EG98_1029_tbl_1_030	32	28				4523	Fresnillo De Gonzalez Echeverria (Fresnillo), Fresnillo Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029
  EG98_1029_tbl_1_031	21	21				27332	Mezquital Del Oro, Mezquital Del Oro Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029
  EG98_1029_tbl_1_032	45.2	45.2	Fluorite			19389	Real De Los Angeles Mine, Noria De Angeles (Noria De Los Angeles), Noria De Angeles Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029
  EG98_1029_tbl_1_033	36	36				2380	Sombrerete, Sombrerete Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029
  Emily000401	22.95	22.85				16275	Mezquital Del Oro Mine, Mezquital Del Oro, Mezquital Del Oro Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029
  Emily000402	23.85	23.75				16275	Mezquital Del Oro Mine, Mezquital Del Oro, Mezquital Del Oro Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029
  Emily000403	21.83	21.77				16275	Mezquital Del Oro Mine, Mezquital Del Oro, Mezquital Del Oro Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029
  Emily000404	22.84	20.76				16275	Mezquital Del Oro Mine, Mezquital Del Oro, Mezquital Del Oro Municipality, Zacatecas, Mexico	Camprubi et al. (2003)	EG98_1029
  sedznpb-00307	35	30				14262	Chalchihuites Municipality, Zacatecas, Mexico	Singer et al. (2009)	USGSOFR2009-1252
  sedznpb-00317	40	40				19156	Providencia Mine, Plateros, Fresnillo Municipality, Zacatecas, Mexico	Singer et al. (2009)	USGSOFR2009-1252
  sedznpb-00318	46.3	44.1				19389	Real De Los Angeles Mine, Noria De Angeles (Noria De Los Angeles), Noria De Angeles Municipality, Zacatecas, Mexico	Singer et al. (2009)	USGSOFR2009-1252
  sedznpb-00321	35	30				23184	Sombrerete Mine, Sombrerete, Sombrerete Municipality, Zacatecas, Mexico	Singer et al. (2009)	USGSOFR2009-1252
  vms-00633	145	100				9958	Azulagues Mine, General Pánfilo Natera, General Pánfilo Natera Municipality, Zacatecas, Mexico	Moiser et al. (2009)	USGSOFR2009-1034