Sample L75

NavDat sample number 60072 · ANDESITE

Sample

Sample ID	L75
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	44.0669
Longitude	-122.242
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	58.13		WT%	XRF
TIO2	1.04		WT%	XRF
AL2O3	17.61		WT%	XRF
FEOT	6.9		WT%	XRF
MNO	0.12		WT%	XRF
MGO	3.91		WT%	XRF
CAO	7.55		WT%	XRF
NA2O	3.4		WT%	XRF
K2O	1.18		WT%	XRF
P2O5	0.15		WT%	XRF
TOTAL	99.6		WT%	XRF
LOI	1.21		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.