Sample 93-TO-A13

NavDat sample number 59991 · ANDESITE

Sample

Sample ID	93-TO-A13
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3694
Longitude	-122.519
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
36		32.4	39.6

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	58.03		WT%	XRF
TIO2	1.1		WT%	XRF
AL2O3	17.65		WT%	XRF
FEOT	6.93		WT%	XRF
MNO	0.15		WT%	XRF
MGO	3.89		WT%	XRF
CAO	7.09		WT%	XRF
NA2O	3.59		WT%	XRF
K2O	1.28		WT%	XRF
P2O5	0.3		WT%	XRF
TOTAL	99.84		WT%	XRF
LOI	2.76		WT%	XRF
BA	295		PPM	XRF
LA	-30		PPM	XRF
CE	54		PPM	XRF
RB	29		PPM	XRF
SR	465		PPM	XRF
Y	21		PPM	XRF
ZR	225		PPM	XRF
NB	13		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.