Sample 91PS-U62

NavDat sample number 59708 · ANDESITE

Sample

Sample ID	91PS-U62
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.0758
Longitude	-122.563
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	58.77		WT%	XRF
TIO2	1.03		WT%	XRF
AL2O3	18.44		WT%	XRF
FEOT	5.86		WT%	XRF
MNO	0.1		WT%	XRF
MGO	3.19		WT%	XRF
CAO	7.02		WT%	XRF
NA2O	4.24		WT%	XRF
K2O	1.12		WT%	XRF
P2O5	0.24		WT%	XRF
TOTAL	99.67		WT%	XRF
LOI	1.19		WT%	XRF
BA	245		PPM	XRF
LA	-30		PPM	XRF
CE	51		PPM	XRF
RB	24		PPM	XRF
SR	570		PPM	XRF
Y	22		PPM	XRF
ZR	190		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.