Sample 98PS-U618B

NavDat sample number 59721 · ANDESITE

Sample

Sample ID	98PS-U618B
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.014
Longitude	-122.507
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	58.26		WT%	XRF
TIO2	1.42		WT%	XRF
AL2O3	16.58		WT%	XRF
FEOT	8.26		WT%	XRF
MNO	0.14		WT%	XRF
MGO	2.98		WT%	XRF
CAO	7.05		WT%	XRF
NA2O	4.32		WT%	XRF
K2O	0.67		WT%	XRF
P2O5	0.32		WT%	XRF
TOTAL	99.4		WT%	XRF
BA	254		PPM	XRF
LA	21		PPM	XRF
CE	54		PPM	XRF
RB	34		PPM	XRF
SR	379		PPM	XRF
Y	28		PPM	XRF
ZR	205		PPM	XRF
NB	20		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.