Sample L831

NavDat sample number 60167 · ANDESITE

Sample

Sample ID	L831
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	44.2913
Longitude	-122.365
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	58.82		WT%	XRF
TIO2	1		WT%	XRF
AL2O3	17.46		WT%	XRF
FEOT	6.5		WT%	XRF
MNO	0.15		WT%	XRF
MGO	3.67		WT%	XRF
CAO	6.97		WT%	XRF
NA2O	3.88		WT%	XRF
K2O	1.32		WT%	XRF
P2O5	0.23		WT%	XRF
TOTAL	100.14		WT%	XRF
LOI	1.55		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.