Sample 90CG-V733

NavDat sample number 29521 · ANDESITE

Sample

Sample ID	90CG-V733
Rock name	ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	dike

Location

Latitude	46.1714
Longitude	-122.489
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
36		32.4	39.6

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	60.72		WT%	XRF
TIO2	1.69		WT%	XRF
AL2O3	15.54		WT%	XRF
FEOT	7.68		WT%	XRF
MNO	0.15		WT%	XRF
MGO	2.38		WT%	XRF
CAO	5.36		WT%	XRF
NA2O	4.29		WT%	XRF
K2O	1.72		WT%	XRF
P2O5	0.48		WT%	XRF
TOTAL	99.36		WT%	XRF
LOI	2.64		WT%	XRF
BA	445		PPM	XRF
LA	40		PPM	XRF
CE	87		PPM	XRF
RB	49		PPM	XRF
SR	290		PPM	XRF
Y	44		PPM	XRF
ZR	340		PPM	XRF
NB	24		PPM	XRF

References

Evarts, Russell C; Ashley, Roger P (1992) Preliminary geologic map of the Elk Mountain Quadrangle, Cowlitz County, Washington. Open-File Report - U. S. Geological Survey. 1992.