Sample 93-ER-A94

NavDat sample number 60019 · ANDESITE

Sample

Sample ID	93-ER-A94
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2747
Longitude	-122.478
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	59.59		WT%	XRF
TIO2	1.06		WT%	XRF
AL2O3	16.31		WT%	XRF
FEOT	6.62		WT%	XRF
MNO	0.1		WT%	XRF
MGO	4.32		WT%	XRF
CAO	6.69		WT%	XRF
NA2O	3.57		WT%	XRF
K2O	1.51		WT%	XRF
P2O5	0.24		WT%	XRF
TOTAL	99.34		WT%	XRF
LOI	1.13		WT%	XRF
BA	270		PPM	XRF
LA	-30		PPM	XRF
CE	60		PPM	XRF
RB	31		PPM	XRF
SR	430		PPM	XRF
Y	17		PPM	XRF
ZR	205		PPM	XRF
NB	10		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.