Sample 91PS-U52

NavDat sample number 59702 · ANDESITE

Sample

Sample ID	91PS-U52
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1025
Longitude	-122.549
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
37		33.3	40.7

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.89		WT%	XRF
TIO2	1.3		WT%	XRF
AL2O3	16.61		WT%	XRF
FEOT	7.53		WT%	XRF
MNO	0.14		WT%	XRF
MGO	4.31		WT%	XRF
CAO	6.87		WT%	XRF
NA2O	3.95		WT%	XRF
K2O	0.94		WT%	XRF
P2O5	0.44		WT%	XRF
TOTAL	99.87		WT%	XRF
LOI	1.44		WT%	XRF
BA	220		PPM	XRF
LA	31		PPM	XRF
CE	61		PPM	XRF
RB	11		PPM	XRF
SR	435		PPM	XRF
Y	22		PPM	XRF
ZR	240		PPM	XRF
NB	20		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.