Sample L225

NavDat sample number 60098 · ANDESITE

Sample

Sample ID	L225
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	45.0567
Longitude	-122.426
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
16		14	19

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	58.49		WT%	XRF
TIO2	0.93		WT%	XRF
AL2O3	17.87		WT%	XRF
FEOT	6.7		WT%	XRF
MNO	0.12		WT%	XRF
MGO	3.72		WT%	XRF
CAO	6.87		WT%	XRF
NA2O	3.99		WT%	XRF
K2O	1.16		WT%	XRF
P2O5	0.15		WT%	XRF
TOTAL	100.13		WT%	XRF
LOI	0.71		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.