Sample 84SH-A51A

NavDat sample number 59913 · ANDESITE

Sample

Sample ID	84SH-A51A
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1828
Longitude	-122.118
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	60.68		WT%	XRF
TIO2	1.03		WT%	XRF
AL2O3	17.48		WT%	XRF
FEOT	6.69		WT%	XRF
MNO	0.14		WT%	XRF
MGO	2.41		WT%	XRF
CAO	6.2		WT%	XRF
NA2O	4.05		WT%	XRF
K2O	1.03		WT%	XRF
P2O5	0.29		WT%	XRF
TOTAL	100.11		WT%	XRF
LOI	1.46		WT%	XRF
BA	280		PPM	XRF
LA	-30		PPM	XRF
CE	32		PPM	XRF
RB	26		PPM	XRF
SR	400		PPM	XRF
Y	26		PPM	XRF
ZR	186		PPM	XRF
NB	14		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.