Sample BP0706845

NavDat sample number 16243 · ANDESITE

Sample

Sample ID	BP0706845
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.371
Longitude	-122.64
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
36		35	37

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.5		WT%	XRF
TIO2	1.4		WT%	XRF
AL2O3	17.77		WT%	XRF
FEOT	7.56		WT%	XRF
MNO	0.16		WT%	XRF
MGO	3.58		WT%	XRF
CAO	7.13		WT%	XRF
NA2O	3.35		WT%	XRF
K2O	1.29		WT%	XRF
P2O5	0.26		WT%	XRF
TOTAL	100		WT%	XRF

References

Phillips-William-M (compiler) (1987) Geologic map of the Mount St. Helens Quadrangle, Washington and Oregon. Open-File Report - Washington (State). Division of Geology and Earth Resources. 1987.