Sample 98PS-U618A

NavDat sample number 59720 · ANDESITE

Sample

Sample ID	98PS-U618A
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.0123
Longitude	-122.502
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	57.4		WT%	XRF
TIO2	2.03		WT%	XRF
AL2O3	16.17		WT%	XRF
FEOT	8.84		WT%	XRF
MNO	0.16		WT%	XRF
MGO	3.1		WT%	XRF
CAO	6.43		WT%	XRF
NA2O	4.55		WT%	XRF
K2O	0.98		WT%	XRF
P2O5	0.34		WT%	XRF
TOTAL	98.88		WT%	XRF
BA	238		PPM	XRF
LA	22		PPM	XRF
CE	67		PPM	XRF
RB	16		PPM	XRF
SR	416		PPM	XRF
Y	34		PPM	XRF
ZR	183		PPM	XRF
NB	16		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.