Sample L781

NavDat sample number 60162 · ANDESITE

Sample

Sample ID	L781
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	44.5906
Longitude	-122.474
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	61.74		WT%	XRF
TIO2	0.78		WT%	XRF
AL2O3	17.01		WT%	XRF
FEOT	5.34		WT%	XRF
MNO	0.1		WT%	XRF
MGO	3.25		WT%	XRF
CAO	6.27		WT%	XRF
NA2O	3.48		WT%	XRF
K2O	1.88		WT%	XRF
P2O5	0.14		WT%	XRF
TOTAL	100.29		WT%	XRF
LOI	1.24		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.