Sample L503B

NavDat sample number 60125 · RHYOLITE

Sample

Sample ID	L503B
Rock name	RHYOLITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	44.136
Longitude	-122.513
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
21		17	25

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	77.37		WT%	XRF
TIO2	0.26		WT%	XRF
AL2O3	12.64		WT%	XRF
FEOT	1.36		WT%	XRF
MNO	0.03		WT%	XRF
MGO	0.31		WT%	XRF
CAO	1.44		WT%	XRF
NA2O	2.78		WT%	XRF
K2O	3.79		WT%	XRF
P2O5	0.03		WT%	XRF
TOTAL	100.41		WT%	XRF
LOI	2.12		WT%	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.