Sample 93-ER-A89

NavDat sample number 60018 · ANDESITE

Sample

Sample ID	93-ER-A89
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2683
Longitude	-122.411
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
34		30.6	37.4

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	61.86		WT%	XRF
TIO2	1.1		WT%	XRF
AL2O3	16.81		WT%	XRF
FEOT	6.07		WT%	XRF
MNO	0.12		WT%	XRF
MGO	2.89		WT%	XRF
CAO	6.34		WT%	XRF
NA2O	3.89		WT%	XRF
K2O	0.65		WT%	XRF
P2O5	0.26		WT%	XRF
TOTAL	99.47		WT%	XRF
LOI	2.47		WT%	XRF
BA	325		PPM	XRF
LA	-30		PPM	XRF
CE	68		PPM	XRF
RB	17		PPM	XRF
SR	570		PPM	XRF
Y	30		PPM	XRF
ZR	280		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.