Sample 97PS-U580

NavDat sample number 59715 · ANDESITE

Sample

Sample ID	97PS-U580
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.0038
Longitude	-122.614
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	60.07		WT%	XRF
TIO2	1.71		WT%	XRF
AL2O3	15.36		WT%	XRF
FEOT	8.26		WT%	XRF
MNO	0.16		WT%	XRF
MGO	2.64		WT%	XRF
CAO	5.86		WT%	XRF
NA2O	4.53		WT%	XRF
K2O	1.09		WT%	XRF
P2O5	0.32		WT%	XRF
TOTAL	98.58		WT%	XRF
LOI	2.55		WT%	XRF
BA	265		PPM	XRF
LA	25		PPM	XRF
CE	38		PPM	XRF
RB	26		PPM	XRF
SR	312		PPM	XRF
Y	30		PPM	XRF
ZR	203		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.