Sample 91PS-U66

NavDat sample number 59704 · ANDESITE

Sample

Sample ID	91PS-U66
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.0736
Longitude	-122.55
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	58.29		WT%	XRF
TIO2	1.01		WT%	XRF
AL2O3	17.67		WT%	XRF
FEOT	6.66		WT%	XRF
MNO	0.12		WT%	XRF
MGO	4.14		WT%	XRF
CAO	7.18		WT%	XRF
NA2O	3.84		WT%	XRF
K2O	0.88		WT%	XRF
P2O5	0.2		WT%	XRF
TOTAL	100.05		WT%	XRF
LOI	1.25		WT%	XRF
BA	215		PPM	XRF
LA	-30		PPM	XRF
CE	48		PPM	XRF
RB	20		PPM	XRF
SR	430		PPM	XRF
Y	18		PPM	XRF
ZR	170		PPM	XRF
NB	15		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.