Sample 93-TO-A26

NavDat sample number 59943 · ANDESITE

Sample

Sample ID	93-TO-A26
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3831
Longitude	-122.527
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
38		34.2	41.8

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.61		WT%	XRF
TIO2	1.23		WT%	XRF
AL2O3	16.3		WT%	XRF
FEOT	7.56		WT%	XRF
MNO	0.14		WT%	XRF
MGO	4.54		WT%	XRF
CAO	7.38		WT%	XRF
NA2O	3.61		WT%	XRF
K2O	1.38		WT%	XRF
P2O5	0.25		WT%	XRF
TOTAL	100.13		WT%	XRF
LOI	0.53		WT%	XRF
BA	255		PPM	XRF
LA	-30		PPM	XRF
CE	46		PPM	XRF
RB	33		PPM	XRF
SR	395		PPM	XRF
Y	36		PPM	XRF
ZR	215		PPM	XRF
NB	13		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.