Sample 90CG-A216A

NavDat sample number 59895 · ANDESITE

Sample

Sample ID	90CG-A216A
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2017
Longitude	-122.372
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
34		30.6	37.4

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	58.58		WT%	XRF
TIO2	1.4		WT%	XRF
AL2O3	16.3		WT%	XRF
FEOT	7.87		WT%	XRF
MNO	0.13		WT%	XRF
MGO	3.47		WT%	XRF
CAO	6.97		WT%	XRF
NA2O	3.52		WT%	XRF
K2O	1.46		WT%	XRF
P2O5	0.31		WT%	XRF
TOTAL	100.23		WT%	XRF
LOI	1.71		WT%	XRF
BA	295		PPM	XRF
LA	34		PPM	XRF
CE	55		PPM	XRF
RB	26		PPM	XRF
SR	295		PPM	XRF
Y	28		PPM	XRF
ZR	270		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.