Sample NE 18

NavDat sample number 8685 · ANDESITE

Sample

Sample ID	NE 18
Alternate ID	200
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	Un. Clermond Ferrand, France

Location

Latitude	18.904
Longitude	-99.602
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	58.8		WT%	UNKNOWN
TIO2	0.95		WT%	UNKNOWN
AL2O3	15.3		WT%	UNKNOWN
FE2O3	2.55		WT%	UNKNOWN
FEO	3.2		WT%	UNKNOWN
MNO	0.1		WT%	UNKNOWN
MGO	7.6		WT%	UNKNOWN
CAO	6.2		WT%	UNKNOWN
NA2O	3.6		WT%	UNKNOWN
K2O	1.45		WT%	UNKNOWN
H2O_PLUS	0.82		WT%	UNKNOWN
H2O_MINUS	0.13		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.