Sample 93-ER-A198

NavDat sample number 60027 · ANDESITE

Sample

Sample ID	93-ER-A198
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3375
Longitude	-122.49
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	59.04		WT%	XRF
TIO2	1.09		WT%	XRF
AL2O3	17		WT%	XRF
FEOT	6.79		WT%	XRF
MNO	0.12		WT%	XRF
MGO	3.78		WT%	XRF
CAO	6.75		WT%	XRF
NA2O	3.76		WT%	XRF
K2O	1.39		WT%	XRF
P2O5	0.29		WT%	XRF
TOTAL	99.78		WT%	XRF
LOI	0.8		WT%	XRF
BA	540		PPM	XRF
LA	-30		PPM	XRF
CE	48		PPM	XRF
RB	58		PPM	XRF
SR	370		PPM	XRF
Y	18		PPM	XRF
ZR	200		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.