Sample 91PS-U64

NavDat sample number 59712 · ANDESITE

Sample

Sample ID	91PS-U64
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.0792
Longitude	-122.556
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	60.75		WT%	XRF
TIO2	0.97		WT%	XRF
AL2O3	16.74		WT%	XRF
FEOT	6.15		WT%	XRF
MNO	0.1		WT%	XRF
MGO	3.44		WT%	XRF
CAO	6.19		WT%	XRF
NA2O	4.08		WT%	XRF
K2O	1.27		WT%	XRF
P2O5	0.31		WT%	XRF
TOTAL	99.61		WT%	XRF
LOI	1.38		WT%	XRF
BA	290		PPM	XRF
LA	32		PPM	XRF
CE	72		PPM	XRF
RB	26		PPM	XRF
SR	410		PPM	XRF
Y	24		PPM	XRF
ZR	245		PPM	XRF
NB	21		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.