Sample 91PS-U53

NavDat sample number 59698 · ANDESITE

Sample

Sample ID	91PS-U53
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1025
Longitude	-122.564
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
37		33.3	40.7

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.41		WT%	XRF
TIO2	1.34		WT%	XRF
AL2O3	16.82		WT%	XRF
FEOT	7.86		WT%	XRF
MNO	0.13		WT%	XRF
MGO	4.35		WT%	XRF
CAO	7.12		WT%	XRF
NA2O	3.63		WT%	XRF
K2O	0.87		WT%	XRF
P2O5	0.46		WT%	XRF
TOTAL	99.04		WT%	XRF
LOI	2.33		WT%	XRF
BA	225		PPM	XRF
LA	37		PPM	XRF
CE	55		PPM	XRF
RB	10		PPM	XRF
SR	455		PPM	XRF
Y	19		PPM	XRF
ZR	235		PPM	XRF
NB	29		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.