Sample 208

NavDat sample number 30592

Sample

Sample ID	208
Rock type	VOLCANIC
Material	IGNEOUS

Location

Latitude	46.924
Longitude	-121.678
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		22.5	27.5

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	63.4		WT%	XRF
TIO2	0.81		WT%	XRF
AL2O3	18.22		WT%	XRF
FEOT	4.77		WT%	XRF
MNO	0.03		WT%	XRF
MGO	2.14		WT%	XRF
CAO	5.31		WT%	XRF
NA2O	2.85		WT%	XRF
K2O	2.29		WT%	XRF
P2O5	0.18		WT%	XRF
TOTAL	97.69		WT%	XRF
RB	91		PPM	XRF
SR	340		PPM	XRF

References

Murphy, Mark T; Marsh, Bruce D (1993) Textures and magmatic evolution of intermediate-composition dome complexes; evidence from the northern Tatoosh Complex, southern Washington Cascades. Journal of Volcanology and Geothermal Research. 54; 3-4, Pages 197-220. 1993. doi:10.1016/0377-0273(93)90064-X