Sample 93TO-B87

NavDat sample number 59987 · ANDESITE

Sample

Sample ID	93TO-B87
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3456
Longitude	-122.607
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	57.36		WT%	XRF
TIO2	1.22		WT%	XRF
AL2O3	17.84		WT%	XRF
FEOT	7.18		WT%	XRF
MNO	0.12		WT%	XRF
MGO	3.14		WT%	XRF
CAO	6.7		WT%	XRF
NA2O	3.81		WT%	XRF
K2O	1.43		WT%	XRF
P2O5	1.22		WT%	XRF
TOTAL	100.5		WT%	XRF
LOI	1.03		WT%	XRF
BA	350		PPM	XRF
LA	37		PPM	XRF
CE	55		PPM	XRF
RB	35		PPM	XRF
SR	490		PPM	XRF
Y	26		PPM	XRF
ZR	205		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.