Sample 90CG-A209

NavDat sample number 59678 · DACITE

Sample

Sample ID	90CG-A209
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.2022
Longitude	-122.38
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	66.88		WT%	XRF
TIO2	0.75		WT%	XRF
AL2O3	15.12		WT%	XRF
FEOT	5.22		WT%	XRF
MNO	0.12		WT%	XRF
MGO	1.23		WT%	XRF
CAO	3.7		WT%	XRF
NA2O	4.92		WT%	XRF
K2O	1.83		WT%	XRF
P2O5	0.22		WT%	XRF
TOTAL	99.61		WT%	XRF
LOI	1.85		WT%	XRF
BA	480		PPM	XRF
LA	30		PPM	XRF
CE	76		PPM	XRF
RB	45		PPM	XRF
SR	235		PPM	XRF
Y	40		PPM	XRF
ZR	380		PPM	XRF
NB	19		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.