Sample 92TO-B35

NavDat sample number 59942 · ANDESITE

Sample

Sample ID	92TO-B35
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3838
Longitude	-122.616
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
38		34.2	41.8

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	58.88		WT%	XRF
TIO2	1.2		WT%	XRF
AL2O3	16.5		WT%	XRF
FEOT	7.36		WT%	XRF
MNO	0.14		WT%	XRF
MGO	3.64		WT%	XRF
CAO	6.77		WT%	XRF
NA2O	3.82		WT%	XRF
K2O	1.39		WT%	XRF
P2O5	0.3		WT%	XRF
TOTAL	99.86		WT%	XRF
LOI	0.89		WT%	XRF
BA	300		PPM	XRF
LA	38		PPM	XRF
CE	61		PPM	XRF
RB	35		PPM	XRF
SR	360		PPM	XRF
Y	30		PPM	XRF
ZR	235		PPM	XRF
NB	16		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.