Sample 84SH-V12A

NavDat sample number 59923 · ANDESITE

Sample

Sample ID	84SH-V12A
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1402
Longitude	-122.162
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
25		22.5	27.5

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.83		WT%	XRF
TIO2	1.22		WT%	XRF
AL2O3	17.82		WT%	XRF
FEOT	8.18		WT%	XRF
MNO	0.17		WT%	XRF
MGO	2.52		WT%	XRF
CAO	6.55		WT%	XRF
NA2O	4.3		WT%	XRF
K2O	1.11		WT%	XRF
P2O5	0.28		WT%	XRF
TOTAL	99.54		WT%	XRF
LOI	0.56		WT%	XRF
BA	270		PPM	XRF
LA	-30		PPM	XRF
CE	30		PPM	XRF
RB	30		PPM	XRF
SR	310		PPM	XRF
Y	39		PPM	XRF
ZR	162		PPM	XRF
NB	11		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.