Sample NE 15

NavDat sample number 8682 · ANDESITE

Sample

Sample ID	NE 15
Alternate ID	197
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	Un. Clermond Ferrand, France

Location

Latitude	18.966
Longitude	-99.607
Location	Nevado de Toluca
State / province	Mexico

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
2		1	3	Pleistocene

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	64.3		WT%	UNKNOWN
TIO2	0.55		WT%	UNKNOWN
AL2O3	15.9		WT%	UNKNOWN
FE2O3	1.85		WT%	UNKNOWN
FEO	1.75		WT%	UNKNOWN
MNO	0.07		WT%	UNKNOWN
MGO	1.8		WT%	UNKNOWN
CAO	3.95		WT%	UNKNOWN
NA2O	4.5		WT%	UNKNOWN
K2O	1.95		WT%	UNKNOWN
H2O_PLUS	2.32		WT%	UNKNOWN
H2O_MINUS	0.28		WT%	UNKNOWN

References

Cantagrel, J M; Robin, C; Vincent, P (1981) Les grandes etapes d'evolution d'un volcan andesitique composite; exemple du Nevado de Toluca Mexique. Bulletin Volcanologique. 44; 2, Pages 177-188. 1981.