Sample 84CG-V28

NavDat sample number 59827 · ANDESITE

Sample

Sample ID	84CG-V28
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1211
Longitude	-122.266
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
36		32.4	39.6

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	59.35		WT%	XRF
TIO2	1.12		WT%	XRF
AL2O3	16.61		WT%	XRF
FEOT	6.92		WT%	XRF
MNO	0.13		WT%	XRF
MGO	3.59		WT%	XRF
CAO	6.61		WT%	XRF
NA2O	3.74		WT%	XRF
K2O	1.68		WT%	XRF
P2O5	0.26		WT%	XRF
TOTAL	99.58		WT%	XRF
LOI	1.71		WT%	XRF
BA	310		PPM	XRF
LA	32		PPM	XRF
CE	55		PPM	XRF
RB	37		PPM	XRF
SR	351		PPM	XRF
Y	29		PPM	XRF
ZR	254		PPM	XRF
NB	12		PPM	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.