Sample 93-TO-A18

NavDat sample number 59993 · ANDESITE

Sample

Sample ID	93-TO-A18
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.345
Longitude	-122.506
State / province	Oregon

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	59.1		WT%	XRF
TIO2	1.2		WT%	XRF
AL2O3	16.91		WT%	XRF
FEOT	7.21		WT%	XRF
MNO	0.17		WT%	XRF
MGO	3.2		WT%	XRF
CAO	6.38		WT%	XRF
NA2O	3.84		WT%	XRF
K2O	1.66		WT%	XRF
P2O5	0.33		WT%	XRF
TOTAL	99.54		WT%	XRF
LOI	0.61		WT%	XRF
BA	340		PPM	XRF
LA	-30		PPM	XRF
CE	61		PPM	XRF
RB	39		PPM	XRF
SR	445		PPM	XRF
Y	31		PPM	XRF
ZR	255		PPM	XRF
NB	18		PPM	XRF

References

du, Bray Edward A; John, David A; Sherrod, David R; Evarts, Russell C; Conrey, Richard M; Lexa, Jaroslav (2006) Geochemical database for volcanic rocks of the western Cascades, Washington, Oregon, and California. U. S. Geological Survey Data Series. 2006.