Sample 93TO-B84

NavDat sample number 59985 · ANDESITE

Sample

Sample ID	93TO-B84
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3408
Longitude	-122.599
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	58.94		WT%	XRF
TIO2	1.22		WT%	XRF
AL2O3	16.74		WT%	XRF
FEOT	7.07		WT%	XRF
MNO	0.1		WT%	XRF
MGO	3.7		WT%	XRF
CAO	6.66		WT%	XRF
NA2O	3.68		WT%	XRF
K2O	1.59		WT%	XRF
P2O5	0.31		WT%	XRF
TOTAL	99.52		WT%	XRF
LOI	1.36		WT%	XRF
BA	315		PPM	XRF
LA	31		PPM	XRF
CE	50		PPM	XRF
RB	38		PPM	XRF
SR	390		PPM	XRF
Y	25		PPM	XRF
ZR	230		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.