Sample NE 4

NavDat sample number 8691 · ANDESITE

Sample

Sample ID	NE 4
Alternate ID	206
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	Un. Clermond Ferrand, France

Location

Latitude	19.09
Longitude	-99.76
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	62.3		WT%	UNKNOWN
TIO2	0.85		WT%	UNKNOWN
AL2O3	17.5		WT%	UNKNOWN
FE2O3	2.27		WT%	UNKNOWN
FEO	2.46		WT%	UNKNOWN
MNO	0.08		WT%	UNKNOWN
MGO	2.8		WT%	UNKNOWN
CAO	5.2		WT%	UNKNOWN
NA2O	4.7		WT%	UNKNOWN
K2O	2		WT%	UNKNOWN
H2O_PLUS	0.3		WT%	UNKNOWN
H2O_MINUS	0.18		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.