Sample 93PS-U304

NavDat sample number 59860 · ANDESITE

Sample

Sample ID	93PS-U304
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1367
Longitude	-122.62
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	59.25		WT%	XRF
TIO2	1.66		WT%	XRF
AL2O3	15.7		WT%	XRF
FEOT	8.27		WT%	XRF
MNO	0.18		WT%	XRF
MGO	2.94		WT%	XRF
CAO	6.57		WT%	XRF
NA2O	3.81		WT%	XRF
K2O	1.06		WT%	XRF
P2O5	0.55		WT%	XRF
TOTAL	99.07		WT%	XRF
LOI	3.27		WT%	XRF
BA	380		PPM	XRF
LA	35		PPM	XRF
CE	106		PPM	XRF
RB	32		PPM	XRF
SR	510		PPM	XRF
Y	41		PPM	XRF
ZR	320		PPM	XRF
NB	22		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.