Sample CH9

NavDat sample number 10827 · ANDESITE

Sample

Sample ID	CH9
Alternate ID	2349
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	19.68
Longitude	-97.45
Location	Los Humeros
State / province	Puebla

Age

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

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	61.96		WT%	UNKNOWN
TIO2	0.89		WT%	UNKNOWN
AL2O3	16.62		WT%	UNKNOWN
FE2O3	2.49		WT%	UNKNOWN
FEO	1.97		WT%	UNKNOWN
MNO	0.08		WT%	UNKNOWN
MGO	2.22		WT%	UNKNOWN
CAO	4.59		WT%	UNKNOWN
NA2O	4.86		WT%	UNKNOWN
K2O	2.78		WT%	UNKNOWN
P2O5	0.25		WT%	UNKNOWN
LOI	0.56		WT%	UNKNOWN
H2O_MINUS	0.25		WT%	UNKNOWN
TOTAL	99.52		WT%	UNKNOWN

References

Verma, Surendra P; Lopez, M M (1982) Geochemistry of Los Humeros Caldera, Puebla, Mexico. Bulletin Volcanologique. 45; 1, Pages 63-79. 1982. doi:10.1007/BF02600390